Part E Robust Details

Robust Details LimitedDavy AvenueKnowlhillMilton KeynesMK5 8NB

Tel: 0870 240 8210Fax: 0870 240 8203Web: www.robustdetails.com

Part E robust details

Part E robust details

Using the Part E Robust Details Scheme

1. Select the robust details you want to build to

2. Register plots with Robust Details Ltd (RDL)

3. Construct in accordance with all relevant specifications

Ensure you are able to meet the specifications and comply with the requirements

If selecting walls and floors for flats, refer to Table 3 in the Introduction to ensure compatibility

Register all plots that will benefit from the robust details, prior to commencement of work on site

Notify Building Control by forwarding them 1 set of the Purchase Statements issued to you by RDL

The specifications must be strictly followed.If in doubt contact the RDL Technical Helpline

Building control may carry out inspections of work in progress. Deviations from the specifications may

result in pre-completion sound testing

Performance Monitoring

Other forms of Construction may also be available…

If you have designed a robust form of construction for separating walls or floors, it is possible to have it

assessed for inclusion in this Handbook

This involves submitting details of the construction; and a number of sound tests conducted within dwellings on real developments. To meet the robust details performance criteria, the mean of the

test results must be at least 5dB better than the Building Regulations minimum

For further information, please refer to our website, www.robustdetails.com,or for additional advice, phone the RDL Technical Helpline on 0870 240 8209

To ensure the scheme continues to provide the expected high levels of performance, RDL conduct random visual inspections and tests on a proportion of sites registered. So please remember that your site may be visited by us as well as Building Control.

Contents

Introduction

List of robust details

• Table 1 – Separating walls

• Table 2 – Separating floors

• Tables 3a, 3b and 3c – Robust detail separating walls and floors which can be used

together in flats/apartments

• Table 4 – Robust detail separating walls which can be used togetherwith non-robust detail separating floors in flats/apartments

• Table 5 – Robust detail separating floors which can be used togetherwith non-robust detail separating walls in flats/apartments

• Table 6 – Robust detail separating walls which can be used togetherwith the proprietary flanking constructions contained inAppendix A2

• Table 7 – Robust detail separating floors which can be used togetherwith alternative products contained in Appendix A3

Robust details

Separating walls

• Masonry

• Timber

• Steel

Separating floors

• Concrete

• Timber

• Steel-concrete composite

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Contents

Appendices

Appendix A1 Additional guidance

Appendix A2 Proprietary flanking constructions

Appendix A3 Specific proprietary products

Appendix B Glossary

Appendix C Determination of the acoustic performance requirementsfor floating floor treatments used with RD timber frameseparating floors

Appendix D Determination of the acoustic performance requirementsfor floating floor treatments used with RD concrete andsteel-concrete composite separating floors

Appendix E Determination of the acoustic performance requirementsfor resilient bars used on ceilings

Appendix F Determination of the acoustic performance ofdownlighters and recessed lighting in lightweightseparating floors

Appendix G Determination of the acoustic performance for bondedfloor coverings used with RD concrete separating floorE-FC-8.

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This handbook contains the separating wall andseparating floor constructions that have achievedthe status of robust details for Part E of theBuilding Regulations (England and Wales),“Resistance to the passage of sound”.

The robust details have undergone an extensivesound insulation testing regime, robust designanalysis and independent audit and have satisfiedthe robust details Management Board that theyshould provide a level of sound insulationcompliant with Part E.

The use of robust details provides an alternative to pre-completion testing for demonstratingcompliance with the performance standards of PartE for new build dwellings. Every dwelling built usingrobust details needs to be registered with RobustDetails Ltd and a plot registration fee paid. Furtherinformation on the robust details scheme (includinghow to apply for new robust details) is available onthe robust details web site at:

www.robustdetails.com

or from:

Robust Details LtdDavy AvenueKnowlhillMilton KeynesMK5 8NB

Telephone: 0870 240 8209 - Technical0870 240 8210 - General

Fax: 0870 240 8203

Each robust detail includes materials andconstruction details for the separating wall/floorand its key interfaces with other elements andshould be read in conjunction with Appendix A. The final page of each robust detail is a checklist,which should be photocopied and used by the sitemanager/supervisor to confirm that the separatingwall/floor has been built correctly. The buildingcontrol body may ask to see the checklist.

It is important that separating walls/floors and theirassociated junctions and flanking conditions areconstructed entirely in accordance with the relevantrobust detail; otherwise the building control bodymay require pre-completion testing to be carried out.

The tables on pages 4,5 and 6 show which robustdetail separating floors and walls can be used inflats/apartments.

Note:

The guidance contained in this handbookrelates only to Part E. The building work willalso have to comply with the requirements of all other relevant Parts of the BuildingRegulations and other relevant legislation.

Where testing is required on a wall or floor the user should seek expert acoustic adviceprior to construction commencing.

Copyright in the contents of this handbook is owned by Robust Details Limited. No copying or reproduction of the contents is permittedwithout the consent of Robust Details Limited with the exception of the checklists. The checklists may be copied and used freely.

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Terms and Conditions:

Please refer to www.robustdetails.com for full terms and conditions.

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Introduction

Table 1 – Separating walls

E-WM-1 masonry – dense aggregate blockwork (wet plaster)

E-WM-2 masonry – lightweight aggregate blockwork (wet plaster)

E-WM-3 masonry – dense aggregate blockwork (render and gypsum-based board)

E-WM-4 masonry – lightweight aggregate blockwork (render and gypsum-based board)

E-WM-5 masonry – Besblock “Star Performer” cellular blockwork (render and gypsum-based board)

E-WM-6 masonry – aircrete blockwork (render and gypsum-based board)

E-WM-7 Suspended from further registrations

E-WM-8 masonry – lightweight aggregate blockwork Saint Gobain – Isover RD35 (gypsum-based board)

E-WM-9 masonry – solid dense aggregate blockwork (render and gypsum-based board)

E-WM-10 masonry – aircrete thin joint blockwork with specified wall ties (render and gypsum-based board finish)

E-WM-11 masonry – lightweight aggregate blockwork (render and gypsum-based board) with 100mm minimumcavity

E-WM-12 masonry – Plasmor “Aglite Ultima” lightweight aggregate blockwork (render and gypsum-based board)

E-WM-13 masonry – aircrete thin joint - untied blockwork (render and gypsum-based board)

E-WM-14 masonry – lightweight aggregate blockwork Saint Gobain - Isover RD35 (gypsum-based board) with100mm minimum cavity

E-WM-15 masonry – aircrete blockwork Saint Gobain - Isover RD35 (gypsum-based board)

E-WM-16 masonry – dense aggregate blockwork (render and gypsum-based board) with 100mm minimum cavity

E-WM-17 masonry – lightweight aggregate blockwork Saint Gobain-Isover RD Party Wall Roll (gypsum-basedboard)

E-WM-18 masonry – dense aggregate blockwork (wet plaster) with minimum 100mm cavity

E-WM-19 masonry – dense or lightweight aggregate blockwork (render and gypsum-based board) with 100mmminimum cavity and MONARFLOOR® BRIDGESTOP® system

E-WM-20 masonry – lightweight aggregate blockwork Saint Gobain - Isover RD Party Wall Roll (gypsum-basedboard) with 100mm minimum cavity

E-WM-21 masonry – lightweight aggregate blockwork (wet plaster) with minimum 100mm cavity

E-WT-1 timber frame – without sheathing board

E-WT-2 timber frame – with sheathing board

E-WT-3 timber frame – Elecoframe prefabricated panels

E-WT-4 timber frame – Excel Industries Warmcell 500 insulation - with sheathing board

E-WS-1 steel frame – twin metal frame

E-WS-2 steel frame – British Gypsum Gypwall QUIET IWL

E-WS-3 steel frame – modular steel frame housing

E-WS-4 steel frame – twin metal frame - 250mm between linings

List of Robust Details


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Table 2 – Separating floors

E-FC-1 precast concrete plank with directly applied screed and floating floor treatment

E-FC-2 in-situ concrete slab and floating floor treatment

E-FC-3 Suspended from further registrations

E-FC-4 precast concrete plank and Thermal Economics IsoRubber system and floating screed

E-FC-5 precast concrete plank and Cellecta Yelofon HD10+ system and floating screed

E-FC-6 beam and block with concrete topping Regupol E48 system and floating screed

E-FC-7 beam and block with concrete topping and floating floor treatment

E-FC-8 precast concrete plank with floating screed and bonded resilient floor covering

E-FC-9 precast concrete plank with directly applied screed and Thermal Economics IsoRubber top bondedresilient floor covering

E-FC-10 in-situ concrete slab with Thermal Economics IsoRubber top bonded resilient floor covering

E-FC-11 precast concrete plank and Icopal-MONARFLOOR® Tranquilt and floating screed

E-FC-12 precast concrete plank and Thermal Economics IsoRubber Base HP3 system and floating screed

E-FC-13 precast concrete plank and InstaCoustic InstaLay 65 system and floating screed

E-FT-1 timber I-joists and floating floor treatment

E-FT-2 timber solid joists and floating floor treatment

E-FT-3 MiTek Posi-Joist, Prestoplan PresWeb, WOLF easi-joist, Gang Nail ecojoist or ITW Alpine SpaceJoistmetal web timber joist and floating floor treatment

E-FT-4 timber Finnjoists with Finnforest Acoustic layer and Gyvlon screed

E-FT-5 Cellecta ScreedBoard 28® system on timber I-joists

E-FT-6 Cellecta ScreedBoard 28® system on metal web joists

E-FS-1 steel deck and in-situ concrete and floating floor treatment

E-FS-2 UltraBEAM metal joists and floating floor treatment

List of Robust Details



Introduction

Table 3a – Combinations of Robust Details separating wallsand floors for flats/apartments in loadbearing masonryconstructions

Separating floors

E-FC-1

Separating walls E-FC-11 E-FC-8

E-FC-12 E-FC-6 E-FC -9

E-FC-13 E-FC-4 E-FC-5 E-FC-7 E-FC-10

E-WM-1 ✔ ✔ ✔ ✔ ✔

E-WM-2 ✔ ✔ ✔ F ✔

E-WM-3 ✔ ✔ ✔ ✔ ✔

E-WM-4 ✔ ✔ ✔ F ✔

E-WM-5 ✔ ✔ ✔ F ✔

E-WM-6 F ✔ ✔see note 1 F ✔

E-WM-8 ✔ ✔ ✔ F ✔


E-WM-11 ✔ ✔ ✔ F ✔

E-WM-12 F ✔ F F F


E-WM-14 ✔ ✔ ✔ F ✔


E-WM-16 ✔ ✔ ✔ ✔ ✔

E-WM-17 ✔ ✔ ✔ F ✔

E-WM-18 ✔ ✔ ✔ ✔ ✔

E-WM-20 ✔ ✔ ✔ F ✔

E-WM-21 ✔ ✔ ✔ F ✔

Key

✔ Permissible wall and floor combinations for flats/apartments requiring no pre-completionsound testing.

F Only the separating floor requires pre-completion sound testing.1 Where this combination is selected, 200mm (min) thick precast concrete planks and

ceiling treatment CT5 must be used.

Combining loadbearing masonry and lightweight framed separating wallsUpper storeys of blocks of flats may be constructed using lightweight steel or timber frame,where the lower storeys are loadbearing masonry construction. The lightweight walls builtdirectly off the uppermost precast concrete separating floors may be registered as RobustDetails provided:- the lightweight walls are in vertical alignment with the masonry walls below, such that

they can follow the principles of the ground floor junction shown for the relevant RobustDetails separating wall;

- the external (flanking) wall construction above the separating floor meets therequirements on page 2 of the relevant Robust Details separating wall, and have 2 layersof gypsum-based board;

- the junction between the bottom rail (or sole plate) is well sealed;- all other relevant requirements in the Handbook are strictly followed.If the lightweight walls are not in vertical alignment with the masonry walls below, theconcrete floor would bridge the separating wall cavities and connect the wall leafs.Therefore, the lightweight walls directly above the floor, as well as the masonry walls directlybelow, may be subject to pre-completion sound testing.The separating floor can be registered as a Robust Detail provided:- the floor is constructed in accordance with the requirements of the published detail;- the external (flanking) wall below the precast concrete floor satisfies the requirements of

detail 1 on page 2 of the relevant Robust Details separating floor;- all other relevant requirements in the Handbook are strictly followed.


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Table 3b – Combinations of Robust Detailsseparating walls and floors forflats/apartments in timber frameconstructions

Separating floors

E-FT-1

E-FT-2

E-FT-3

E-FT-4

Separating walls E-FT-5 E-FC-2

E-FT-6 E-FS-1

E-WT-1 ✔ W see note 1

E-WT-2 ✔ W see note 1

E-WT-3 F W see note 1

E-WT-4 F W see note 1

Key for Table 3b and Table 3c

✔ Permissible wall and floor combinations for flats/apartments requiring no pre-completion sound testing.

F Only the separating floor requires pre-completion sound testing.W Only the separating wall requires pre-completion sound testing.1 Lightweight steel and timber frame walls may be constructed above in-situ poured concrete floors.

The lightweight walls built directly off the concrete floors may be registered as Robust Details provided:- they meet all other requirements of the Robust Detail, including flanking constructions;- the principles of the raft foundation junction are followed. As such, the concrete of the floor must have a mass of 365 kg/m2 (min),

and a floating floor treatment must be provided;Walls constructed to the soffit of in-situ poured concrete floors can not be registered as Robust Details and may be subject to pre-completion sound testing.

See also notes relating to Combining loadbearing masonry and lightweight framed separating walls included under Table 3a.

Table 3c – Combinations of Robust Detailsseparating walls and floors forflats/apartments in reinforced concreteand steel frame constructions

Separating floors

Separatingwalls E-FC-2 E-FC-10 E-FS-1 E-FS-2

E-WS-1 W note 1 W W note 1 ✔

E-WS-2 ✔ W W W

E-WS-3 W W W W

E-WS-4 W note 1 W W note 1 ✔

see see

see see



Introduction

Table 4 – Combining Robust Detailsseparating walls with non-Robust Detailsseparating floors in flats/apartments

Loadbearing E-WM-1 F1masonry

E-WM-2 F1

E-WM-3 F1

E-WM-4 F1

E-WM-5 F1

E-WM-6 F1

E-WM-8 F1

E-WM-10 F1

E-WM-11 F1

E-WM-12 F1

E-WM-13 F1

E-WM-14 F1

E-WM-15 F1

E-WM-16 F1

E-WM-17 F1

E-WM-18 F1

E-WM-20 F1

E-WM-21 F1

Timber frame E-WT-1 F2

E-WT-2 F2

E-WT-3 F2

E-WT-4 F2

Lightweight E-WS-1 F3steel frame

E-WS-2 F4

E-WS-3 F3

E-WS-4 F3

Key

F1 Only the separating floor requires pre-completion testing provided the floor does not bridge the separating wall cavity. Otherwise both the wall and floor need testing.

F2 Only the separating floor requires pre-completion testing provided the floor is timber-based and does not bridge theseparating wall cavity. Otherwise both the wall and floorneed testing.

F3 Only the separating floor requires pre-completion testing provided the wall is being used in a lightweight steel frame flat/apartment and the floor does not bridge theseparating wall cavity. Otherwise both the wall and floor need testing.

F4 Only the separating floor requires pre-completion testing provided the wall is being used in a concrete frame building. Otherwise both the wall and floor need testing.

For any construction that requires a separating element tobe tested, the user should seek expert acoustic advice onthe design and potential acoustic performance.

Table 5 – Combining Robust Detailsseparating floors with non-Robust Detailsseparating walls in flats/apartments

Loadbearing E-FC-1 W1masonry

E-FC-4 W2

E-FC-5 W2

E-FC-6 W1

E-FC-7 W1

E-FC-8 W2

E-FC-9 W2

E-FC-10 W2

E-FC-11 W1

E-FC-12 W1

E-FC-13 W1

Timber frame E-FT-1 W3

E-FT-2 W3

E-FT-3 W3

E-FT-4 W3

E-FT-5 W3

E-FT-6 W3

Reinforced E-FC-2 W4concrete frame

E-FC-10 W4

Steel frame E-FS-1 W4

E-FS-2 W5

Key

W1 Only the separating wall requires pre-completion testing provided the wall is constructed using aggregate blocksspecified for the inner leaf in the floor Robust Detail.Otherwise both the floor and wall need testing.

W2 Only the separating wall requires pre-completion testing provided the wall is constructed using blocks specified forthe inner leaf in the floor Robusr Detail. Otherwise both thefloor and wall need testing.

W3 Only the separating wall requires pre-completion testing if used with timber frame supporting walls and twin leaftimber frame separating walls. Otherwise both the floor andwall need testing.

W4 Only the separating wall requires pre-completion testing provided the external wall meets the specification given inthe separating floor Robust Detail. Otherwise both the floorand wall need testing.

W5 Only the separating wall requires pre-completion testing ifused with steel frame supporting walls and twin leaf steelframe separating walls. Otherwise both the floor and wallneed testing.


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Table 6 – Robust Detail separating walls which canbe used together with the proprietary flankingconstructions contained in Appendix A2

BRIDGESTOP® Smartroof Kingspan Prestoplansystem system TEK PresPeak 60

Masonry E-WM-1 ✔walls

E-WM-2 ✔

E-WM-3 ✔ ✔

E-WM-4 ✔ ✔

E-WM-5 ✔ ✔

E-WM-6 ✔

E-WM-8 ✔ ✔

E-WM-9

E-WM-10 ✔

E-WM-11 ✔ ✔

E-WM-12 ✔ ✔

E-WM-13 ✔

E-WM-14 ✔ ✔

E-WM-15 ✔

E-WM-16 ✔ ✔

E-WM-17 ✔ ✔

E-WM-18 ✔

E-WM-19 ✔

E-WM-20 ✔ ✔

E-WM-21 ✔

Timber E-WT-1 ✔ ✔ ✔walls

E-WT-2 ✔ ✔ ✔

E-WT-3 ✔

E-WT-4 ✔

Steel E-WS-1walls

E-WS-2

E-WS-3

E-WS-4

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Introduction

Table 7 – Robust Detail separating floorswhich can be used together withalternative products contained in Appendix A3

British InsumateGypsum insulationGypFloor tray

Concrete E-FC-1 ✔floors

E-FC-2 ✔

E-FC-4

E-FC-5

E-FC-6

E-FC-7 ✔

E-FC-8

E-FC-9

E-FC-10

E-FC-11

E-FC-12

E-FC-13

Timber E-FT-1 ✔floors

E-FT-2 ✔

E-FT-3 ✔

E-FT-4

E-FT-5

E-FT-6

Steel-concrete E-FS-1 ✔and steel floors

E-FS-2


Separating walls

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Separating Wall – Cavity Masonry

Edition 3October 2010 Update

E-WM-1Dense aggregate blocks ■

Wet plaster ■

Block density 1850 to 2300 kg/m3

Wall ties Approved Document E “Tie type A” (see Appendix A)

Cavity width 75mm (min)

Block thickness 100mm (min), each leaf

Wall finish 13mm plaster or cement: sand render with plaster skim (min 10 kg/m2), both sides

External Masonry (both leaves) with(flanking) wall 50mm (min) cavity – clear,

fully filled or partially filled with insulation

DO

■ Keep cavity and wall ties (and insulation)free from mortar droppings and debris

■ Fully fill all blockwork joints with mortar

■ Make sure there is no connectionbetween the two leaves except for wallties and foundation (and insulation)

■ Ensure that only solid blocks (i.e. nothollow or cellular) are used in theconstruction of separating and flankingwalls

■ Keep any chases for services to aminimum and fill well with mortar.Stagger chases on each side of the wallto avoid them being back to back

■ Select an alternative robust detail whereflues are required in the separating walle.g. for dense aggregate blocks, see E-WM-3

■ Refer to Appendix A

Separating wall cavity insulation(optional)

The cavity may be insulated with mineralwool with a maximum density of 40 kg/m3.

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Separating Wall – Cavity Masonry E-WM-1

1. External (flanking) wall junction

Tied

Plan

Toothed

2. Staggered external (flanking) wall junction

Masonry outer leaf

External wall cavity (min 50mm)

Inner leaf where there is no separating floor e.g. for houses• 100mm (min) concrete block (1350 kg/m3 to

1600 kg/m3, 1850 kg/m3 to 2300 kg/m3) oraircrete block (450 kg/m3 to 800 kg/m3)

• Internal finish - 13mm plaster or nominal 8 kg/m2 gypsum-based board

Inner leaf where there is a separating floor e.g. for flats/apartments• If using robust detail for floor, refer to Table 3a

in introduction to select an acceptable robustdetail separating floor. Then refer to separatingfloor robust detail to identify acceptable innerleaf construction

• If using floor requiring pre-completion testing,seek specialist advice

Tooth or tie walls together

Close external wall cavity with a flexible cavitystop. (Optional if external wall cavity is fullyfilled with built in mineral wool insulation)

Masonry outer leaf



Inner leaf where there is no separating floore.g. for houses• 100mm (min) concrete block (1350 kg/m3 to

1600 kg/m3 or 1850 kg/m3 to 2300 kg/m3) oraircrete block (450 kg/m3 to 800 kg/m3)






Plan

Separatingwall

Separatingwall


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E-WM-1

3. Internal floor junction: timber floor supported on joist hangers

Floor to comply with BuildingRegulations Requirement E2

Section

4. Internal floor junction: timber floor joists built in, beam and block orprecast concrete

Floor to comply with Building Regulations Requirement E2

Internal floors should not be continuousbetween dwellings

Floor construction:• timber joists built in with:

– all voids around the joists filled with mortar– the joint interface between the joist and the

mortar sealed with flexible sealant (seeAppendix A for full specification), or

• beam and block floor with all voids filled withmortar, or

• concrete planks with all voids between planksand blockwork filled with mortar or flexiblesealant

Section

Sketch shows timber joists built in

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5. Separating floor junction

6. Ground floor junction: timber floor, beam and block, precast concrete plank, castin-situ concrete slab or ground bearing slab

Separating wall must not be continuousbetween storeys

Plaster complete wall surface

5mm (min) resilient flanking strip

Concrete planks with all voids filled betweenplanks and blockwork filled with mortar orflexible sealant

Separating floor must not be continuousbetween dwellings

Separating floor:

• if using robust detail for floor, refer to Table 3a in introduction and see separating floor robustdetail for floating floor and ceiling options

• if using floor requiring pre-completion testing,seek specialist advice

Plaster complete wall surface down to finishedfloor level

Ground floor not continuous between dwellings

Ground floor construction:

• timber joists built in with:– all voids around the joists filled with mortar– the joint interface between the joist and the



• concrete planks with all voids between planksand blockwork filled with mortar or flexiblesealant, or

• ground bearing slab

Cavity separating wall continuous to foundation,cavity fill may be provided below minimum clearcavity indicated. Continuous raft foundationsbetween dwellings are not acceptable. Solid wallswhich support separating walls are only acceptablewhere each ground floor (not timber joists) isbuilt into one side of the separating wall andbreaks the vertical continuity of the wall and theminimum clear cavity indicated is maintained.

Section

Section

Sketch shows E-FC-1 type separating floor,FFT1 type floating floor treatment and CT3 typeceiling

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7. Roof junction – pitched roof without room-in-roof

Section

Junction between separating wall and rooffilled with flexible closer

Cavity masonry separating wall continuous tounderside of roof. Alternatively use spandrelpanel – see Appendix A

External wall cavity closed at eaves level with a suitable flexible material (e.g. mineral wool). If a rigid material is used, then it should only be bonded to one leaf

100mm (min) mineral wool insulation – 10 kg/m3 (min)

8. Roof junction – pitched roof with room-in-roof

Junction between separating wall and roof filledwith flexible closer.

100mm (min) mineral wool insulation minimumdensity 10 kg/m3 or 60mm (min) foil faced PURor PIR insulation, minimum density 30 kg/m3

(See Appendix A)

2 layers of nominal 8 kg/m2 gypsum-basedboard. Where used rigid insulation may beplaced between and/or directly beneath rafters

Cavity masonry separating wall continuous to underside of roof covering


Section

Room-in-roof Room-in-roof

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Ref. Item

1. Is separating wall cavity at least 75mm?

2. Is external (flanking) wall cavity at least 50mm?

3. Are separating wall blocks dense aggregate (1850 to 2300 kg/m3)?

4. Is cavity free from droppings and debris?

5. Are separating wall ties Approved Document E “Tie type A”(see Appendix A)?

6. Are cavity stops installed?

7. Are joints fully filled?

8. Are voids around floor joists, chases, etc. fully filled/sealed?

9. Where there is a separating floor (e.g. flats/apartments) has the resilient flanking strip been installed?

10. Is separating wall satisfactorily complete?

Notes (include details of any corrective action)


CHECKLIST (to be completed by site manager/supervisor)

Company:

Site:

Plot: Site manager/supervisor:

Yes No Inspected(✔) (✔) (initials & date)

Site manager/supervisor signature . . . . . . . . . . . . . . . . . . . . . . . . . . .

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E-WM-2Lightweight aggregate blocks ■

Wet plaster ■








DO






■ Select an alternative robust detail whereflues are required in the separating walle.g. for lightweight aggregate blocks, seeE-WM-4




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Tied

Plan

Toothed


Masonry outer leaf



1600 kg/m3) or aircrete block (450 kg/m3 to800 kg/m3).







Masonry outer leaf




1600 kg/m3) or aircrete block (450 kg/m3 to800 kg/m3)






Plan

Separatingwall

Separatingwall

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Section









Section


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6. Ground floor junction: timber floor, beam and block, precast concrete plank, cast in-situ concrete slab or ground bearing slab






Separating floor:












Section

Section

Sketch shows E-FC-1 type separating floor,FFT1 type floating floor treatment and CT3type ceiling

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E-WM-2


Section



External wall cavity closed at eaves level with asuitable flexible material (e.g. mineral wool). If arigid material is used, then it should only bebonded to one leaf.





(See Appendix A)


Cavity masonry separating wall continuous tounderside of roof covering


Section


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Ref. Item



3. Are separating wall blocks lightweight aggregate (1350 to 1600 kg/m3)?











Company:

Site:




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Dense aggregate blocks ■Render and gypsum-based board on dabs ■


Wall ties Approved Document E ‘Tie type A’ (see Appendix A)



Wall finish Gypsum-based board(nominal 8 kg/m2) mountedon dabs on cement:sandrender (nominal 8mm) withscratch finishTypical render mix 1:1:6 to1:1/2:4. Render mix must notbe stronger than background(see Appendix A)

External Masonry (both leaves) with (flanking) wall 50mm (min) cavity – clear,


DO






■ Ensure that render is applied to thecomplete face of each leaf (it may beomitted within the floor joist/beam zone)


Alternative internal renderspecification

Either:

British Gypsum Gyproc Soundcoat Plus(nominal 8mm, minimum 6mm)orKnauf Gypsum Parge Coat (nominal 8mm,minimum 6mm)

applied in accordance with themanufacturer's instructions, may be usedinstead of the cement:sand render mix.




robustdetails Edition 3October 2010 Update


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Tied

Plan

Toothed


Masonry outer leaf




• Internal finish – 13mm plaster or nominal 8 kg/m2 gypsum-based board






Masonry outer leaf










Plan

Separatingwall

Separatingwall


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Edition 3April 2007

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Complete wall face rendered (except inthe floor joist/beam zone where it may beomitted)

Floor to comply with Building RegulationsRequirement E2

Continuous horizontal ribbon of adhesive

Section


Complete wall face rendered (except in the floorjoist/beam zone where it may be omitted)








Continuous horizontal ribbon of adhesiveSection


E-WM-3-Aug2007 29/8/08 14:45 Page 3

robustdetails Edition 3April 2007


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6. Ground floor junction: timber floor, beam and block, precast concrete plank, castin-situ concrete suspended slab or ground bearing slab


Complete wall surface rendered (except in thefloor joist/beam zone where it may be omitted)


Concrete planks with all voids between planksand blockwork filled with mortar or flexiblesealant


Separating floor:• if using robust detail for floor, refer to Table 3a

in introduction and see separating floor robustdetail for floating floor and ceiling options












Section

Section

Sketch shows E-FC-1 type separating floor, FFT1type floating floor treatment and CT3 type ceiling

E-WM-3-Aug2007 29/8/08 14:45 Page 4




E-WM-3


Section



External wall cavity closed at eaves level with asuitable flexible material (e.g. mineral wool). If arigid material is used, then it should only bebonded to one leaf




Junction between separating wall and roof filledwith flexible closer


(See Appendix A)


Continuous ribbon of adhesive



Section

Room-in-roof

Room-in-roof

E-WM-3-Aug2007 29/8/08 14:45 Page 5

robustdetails Edition 3August 2007 Update


6 of 8

9. Flue blocks built into separating wall

Plan

Plan

Flue block (stagger flues in accordance with themanufacturer’s instructions)

Nominal 8mm render

Gypsum-based board (nominal 8 kg/m2) on dabs

High density block (minimum 2270 kg/m3)behind starter blocks from ground level up to at least where gather blocks start

Starter block (stagger in accordance with themanufacturer’s instructions)

Continuous plaster fillet around fire opening

E-WM-3-Aug2007 29/8/08 14:45 Page 6

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blank page

See overleaf for checklist

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Ref. Item









9. Is render coat applied to the whole wall face (except where it may be omitted between floor joists/beams)?


11. Are all junctions of wall and ceiling boards sealed with tape or caulked with sealant?





Company:

Site:




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Lightweight aggregate blocks ■Render and gypsum-based board on dabs ■








DO




■ Ensure that only solid blocks (i.e. nothollow or cellular) are used in theconstruction of separating and flanking walls


■ Ensure that render is applied to thecomplete face of each leaf with a scratchfinish (it may be omitted within the floorjoist/beam zone)



Either:

British Gypsum Gyproc Soundcoat Plus(nominal 8mm, minimum 6mm)orKnauf Gypsum Parge Coat (nominal 8mm,minimum 6mm)orLafarge Ecoat Parge Coat (nominal 8mm,minimum 6mm)







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Toothed


Masonry outer leaf




• internal finish – 13mm plaster or nominal 8 kg/m2 gypsum-based board

Inner leaf where there is a separating floor e.g. for flats/apartments• if using robust detail for floor, refer to Table 3a





Masonry outer leaf










Plan

Separatingwall

Separatingwall




Edition 3April 2007

E-WM-4


Complete wall face rendered (except inthe floor joist/beam zone where it maybe omitted)



Section












E-WM-4-Aug2007 29/8/08 14:49 Page 3



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6. Ground floor junction: timber floor, beam and block, precast concrete plank, castin-situ suspended concrete slab or ground bearing concrete slab



















Section

Section


E-WM-4-Aug2007 29/8/08 14:49 Page 4




E-WM-4


Section









(See Appendix A)





Section

Room-in-roof

Room-in-roof

E-WM-4-Aug2007 29/8/08 14:49 Page 5



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Nominal 8mm render




Continuous plaster fillet around fire openingPlan

Plan

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5. Are separating wall ties Approved Document E “Tie type A”(see appendix A)?











Company:

Site:




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Besblock “Star Performer” dense aggregate cellular blocks ■Render and gypsum-based board on dabs ■

Block Only Besblock “StarPerformer” 5-bridgecellular block (4-core,concrete density 1995 kg/m3,block density 1528 kg/m3,unit weight 14.5 kg)




Wall finish Gypsum based-board(nominal 8 kg/m2) mountedon dabs on cement:sandrender (nominal 8mm) withscratch finish

Typical render mix 1:1:6 to1:1/2:4. Render mix must notbe stronger than background(see Appendix A)



DO

■ Place blocks with cellular holes open tolower mortar bed








Either:








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Tied

Plan

Toothed


Masonry outer leaf


Inner leaf where there is no separating floor e.g. for houses• 100mm (min) concrete block (1350 kg/m3 to1600 kg/m3) or aircrete block (450 kg/m3 to800 kg/m3) or Besblock “Star Performer” block


Inner leaf where there is a separating floor e.g. for flats/apartments• if using robust detail for floor, refer to Table 3a in introduction to select an acceptable robustdetail separating floor. Then refer to separatingfloor robust detail to identify acceptable innerleaf construction or use Besblock “StarPerformer” block




Masonry outer leaf



Inner leaf where there is no separating floore.g. for houses• 100mm (min) concrete block (1350 kg/m3 to1600 kg/m3) or aircrete block (450 kg/m3 to800 kg/m3) or Besblock “Star Performer” block


Inner leaf where there is a separating floor e.g. for flats/apartments• if using robust detail for floor, refer to Table 3a in introduction to select an acceptable robustdetail separating floor. Then refer to separatingfloor robust detail to identify acceptable innerleaf construction or use Besblock “StarPerformer” block



Plan

Separatingwall

Separatingwall




Edition 3April 2007

E-WM-5





Section












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Section

Section


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E-WM-5


Section









(See Appendix A)





Section

Room-in-roof

Room-in-roof

E-WM-5-Aug2007 29/8/08 14:51 Page 5



6 of 8


Plan

Plan


Nominal 8mm render





E-WM-5-Aug2007 29/8/08 14:51 Page 6

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Ref. Item



3. Are separating wall blocks Besblock Star Performer 5-bridgecellular blocks?

4. Are the blocks laid with the cells open to the lower bed?






10. Is render coat applied to the whole wall face (except where itmay be omitted between floor joists/beams)?






Company:

Site:




Contact details for technical assistance from Besblock, manufacturer of ‘Star Performer’ dense aggregate cellular blocks:

Telephone: 01952 685000 Fax: 01952 585224 E-mail: [email protected]


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Aircrete blocks ■Render and gypsum-based board on dabs ■





Wall finish Gypsum-based board(nominal 8 kg/m2) mountedon dabs on cement:sandrender (nominal 8mm) withscratch finishRender mix must not bestronger than 1:1:6 and notstronger than background(see Appendix A)



Note: When using this robust detail inflats/apartments, please refer to Tables 3a and 4 of the Introduction

DO■ Keep cavity and wall ties (and insulation)

free from mortar droppings and debris


■ Make sure there is no connection betweenthe two leaves except for wall ties andfoundations (and insulation)

■ Ensure that only solid blocks (i.e. not hollow orcellular) are used in the construction ofseparating and flanking walls

■ Keep any chases for services to aminimum and fill well with mortar. Staggerchases on each side of the wall to avoidthem being back to back


■ Ensure flues are not integrated within theseparating wall


Alternative internal renderspecificationBritish Gypsum Gyproc Soundcoat Plus(nominal 8mm, minimum 6mm) applied inaccordance with the manufacturer'sinstructions, may be used instead of thecement:sand render mix.

Cavity insulation (optional)

Only Saint Gobain-Isover RD Party Wall Rollmay be used. Ensure RD Party Wall Roll isspecified and fitted in accordance withmanufacturer’s recommendations.

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Tied

Plan

Toothed


Masonry outer leaf


Inner leaf where there is no separating floor e.g. for houses• 100mm (min) aircrete block (450 kg/m3 to 800 kg/m3)

• internal finish 13mm plaster or nominal 8 kg/m2 gypsum-based board

Inner leaf where there is a separating floor e.g. for flats/apartments• if using robust detail for floor, refer to Table 3a in introduction to select an acceptable robustdetail separating floor. Then refer to separatingfloor robust detail to identify acceptable innerleaf construction




Masonry outer leaf








Plan

Separatingwall

Separatingwall




Edition 3November 2007 Update

E-WM-6





Section












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6. Ground floor junction: timber floor, beam and block, precast concrete plank, cast in-situ suspended concrete slab or ground bearing concrete slab










Section


Section



Concrete planks with all voids between planksand blockwork filled with mortar or flexible sealant




• at least one storey of the separating wallflanking the separating floor must be built inAircrete of minimum density of 680kg/m3



Sketch shows E-FC-4 separating floor and CT0type ceiling treatment

E-WM-6-Nov2007 29/8/08 14:53 Page 4




E-WM-6


Section


Aircrete cavity separating wall continuous tounderside of roof. Alternatively use spandrelpanel – see Appendix A







(See Appendix A)



Aircrete cavity separating wall continuous tounderside of roof covering

External wall cavity closed at eaves level with asuitable flexible material (e.g. mineral wool). If arigid material is used, then it should only bebonded to one leafSection

Room-in-roof

Room-in-roof




6 of 6

Ref. Item



3. Is external (flanking) wall inner leaf aircrete (450 to 800 kg/m3)?

4. Are separating wall blocks aircrete (600 to 800 kg/m3)?



7. Are cavity stops installed where specified in the robust detail?




11. Where there is a separating floor (e.g. flats/apartments), hasthe correct flanking/isolation been provided to the perimeter of the floating floor/screed?

12. Are all junctions of wall and ceiling boards sealed with tape orcaulked with sealant?





Company:

Site:





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Separating Wall – Cavity Masonry (thin joint)

Edition 3December 2008 Update

E-WM-7

Important information regarding current status of E-WM-7

E-WM-7 had been subject to extensive investigations and research focusingon the use of wall ties on this thin joint system, and the effect they have onperformance.

This has resulted in E-WM-7 being removed from the robust details scheme,and two new thin joint separating wall types being added.

E-WM-10 should now be specified where wall ties are a structural requirement.

Please note that only the wall ties nominated for the detail can be used.

E-WM-13 should be specified where wall ties are not required structurally.

We recommend that you obtain guidance from a structural engineer and fromthe Aircrete Products Association when specifying this wall type.

Please refer to the relevant sections of this Handbook for full information andspecifications for these wall types.

Please also refer to our website, www.robustdetails.com to check eligibility ofthese wall types to gain credits under the Code for Sustainable Homes andEcoHomes

Should you have any queries with regard to the above, please contact RDL’stechnical advisors on 0870 240 8209 or [email protected].

Dave Baker

Chief Executive, RDL

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Edition 3January 2011 Update

E-WM-8

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Lightweight aggregate, or nominated hollow or cellular blocks ■35mm (minimum) Saint Gobain-Isover RD35 Acoustic Batt ■

Gypsum-based board (nominal 9.8 kg/m2) on dabs ■


Wall ties Insulation retaining wall tiesto Approved Document E ‘Tie type A’ (see Appendix A)

Cavity width 75mm (min) leaf-to-leaf


Wall finish Gypsum-based board (nominal 9.8 kg/m2)mounted on dabs

Insulation 35mm (min) Isover RD35 mineral wool acoustic batt



Hollow or Cellular Blocks

The Besblock Star Performer is the onlyblock of this type currently accepted byRobust Details Ltd for use as an alternativeto solid blocks in E-WM-8

Ensure Star Performer blocks are laid withthe cells open to the lower mortar bed only.

The separating wall must not beconstructed using a mix of the block types.

■ Ensure that Isover RD35 acoustic battsare installed against the same face of thecavity wall construction throughout

■ Ensure Isover RD35 acoustic batts areinstalled in accordance withmanufacturer’s recommendations

■ Ensure Isover RD35 acoustic batts do notbridge the cavity



DO

■ Keep cavity, insulation batts and wall tiesfree from mortar droppings and debris


■ Make sure there is no connectionbetween the two leaves except for wallties and foundation


■ Ensure all Isover RD35 acoustic batts aretightly butted together and half cuts aremade with a clean sharp knife

E-WM-8-Jan2011_Part E-WM-8-Jun2005 16/12/2010 07:43 Page 1

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robustdetails Edition 3January 2011 Update


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Tied

Plan

Toothed


Masonry outer leaf


Inner leaf where there is no separating floor e.g. for houses• 100mm (min) concrete block (1350 kg/m3 to1600 kg/m3) or aircrete block (450 kg/m3 to 800 kg/m3) or Besblock “Star Performer” block


Inner leaf where there is a separating floor e.g. for flats/apartments• if using robust detail for floor, refer to Table 3a in introduction to select an acceptable robust detailseparating floor. Then refer to separating floor robustdetail to identify acceptable inner leaf constructionor use Besblock “Star Performer” block


35mm (min) Isover RD35 mineral wool acousticbatt (no gaps to remain)


Close cavity with a flexible cavity stop unless it isfully filled with built in mineral wool insulation

Masonry outer leaf




Inner leaf where there is no separating floor e.g.for houses• 100mm (min) concrete block (1350 kg/m3 to1600 kg/m3) or aircrete block (450 kg/m3 to 800 kg/m3) or Besblock “Star Performer” block


Inner leaf where there is a separating floor e.g. for flats/apartments• if using robust detail for floor, refer to Table 3a in introduction to select an acceptable robust detailseparating floor. Then refer to separating floor robustdetail to identify acceptable inner leaf constructionor use Besblock “Star Performer” block



Plan

Separatingwall

Separatingwall





E-WM-8


35mm (min) Isover RD35 mineral woolacoustic batt (no gaps to remain)



Section





Floor construction:• timber joists built in with:– all voids around the joists filled with mortar– the joint interface between the joist and themortar sealed with flexible sealant (seeAppendix A for full specification), or








4 of 8








Separating floor:• if using robust detail for floor, refer to Table 3ain introduction and see separating floor robustdetail for floating floor and ceiling options






• timber joists built in with:– all voids around the joists filled with mortar– the joint interface between the joist and themortar sealed with flexible sealant (seeAppendix A for full specification), or





Section

Section






E-WM-8


Section










(See Appendix A)






Section

Room-in-roof

Room-in-roof




6 of 8


Plan

Plan

100mm (min) overlap of Isover batts

100mm (min) overlap of Isover slabs

Ensure that mortar and debris does notcollect on the insulation batts, to avoida connection between the wall leaves



Gypsum-based board (nominal 9.8 kg/m2) mountedon dabs

High density block (minimum 2270 kg/m3) behindstarter blocks from ground level up to at least where gather blocks start





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Ref. Item



3. Are separating wall blocks lightweight aggregate (1350 to 1600 kg/m3) or Besblock “Star Performer” block?Are blocks laid with the cells open to the lower bed


5. Are insulation retaining ties in separating wall to ApprovedDocument E “Tie type A” (see Appendix A)?



8. Is Isover RD35 fixed in the cavity?

9. Are insulation batts tightly butted together?







Company:

Site:




Contact details for technical assistance from Saint Gobain-Isover, manufacturer of Isover RD35 acoustic Batt:




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Separating Wall – Solid Dense Block Masonry

Edition 3April 2007

E-WM-9Attached houses on raft foundations only ■

Dense aggregate blocks ■13mm render and gypsum base board on dabs ■

Block density 1850-2300 kg/m3

Block 215mm wide, full block laidthickness on its side, single course,

stretcher bondNB: mortar beds may be10-15mm thick to permitcoursing to junction withinner leaf

Wall finish Gypsum-based board(nominal mass per unit area12.5 kg/m2) mounted ondabs, on cement: sandrender (nominal 15mm,minimum 13mm) withscratch finish. Typicalrender mix must not bestronger than thebackground (see Appendix A)

External Masonry both leaves with (flanking wall) 50mm (min.) cavity – clear,

fully filled or partially filledwith insulation.

DO

■ Ensure blocks are laid on side for 215mmfull wall width

■ Ensure that blockwork is single coursestretcher bond

■ Ensure all joints are fully filled

■ Ensure inner leaf is either abutted andtied to face of separating wall or bondedin every two courses

■ Ensure no chasing occurs on face ofseparating wall

■ Ensure render coat is a minimum of13mm and applied to face of separatingwall with scratch finish (it may be omittedwithin the floor joist/beam zone)


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IMPORTANTOnly use blocks accepted by Robust Details Ltdas providing a suitable method of identifyingon both faces of the wall, by manufacturedmark or feature, that the constructed wall hasused dense aggregate blocks.

Blocks which Robust Details Ltd have currentlyacknowledged as carrying such identification are:

• Masterblock Masterdenz RD block, identifiedthrough two, 10-12mm radius grooves onone end of the block

A current list of blocks and further informationon block identification is available on therobust details website www.robustdetails.com

DO ✓ DO NOT ✗

Do use single coursestretcher bond

Do not use doublecoursing

E-WM-9-Aug2007.qxd 29/8/08 14:59 Page 1


Separating Wall – Solid Dense Block Masonry E-WM-9

2. Internal floor junction: timber floor supported on joists


Masonry outer leaf


Close cavity with flexible cavity stop unless it isfully filled with built-in mineral wool insulation

Inner leaf • 100mm (min) concrete block (1350 kg/m3 to



Ensure that separating wall blockwork is singlecourse stretcher bond and that inner leaf ofexternal wall is either abutted and tied to face ofseparating wall or bonded (toothed) in every twocourses.NB: Better performance with tied

Complete wall face rendered (except in thefloor joist/beam zone where it may beomitted)



Tied

Plan

Toothed

Separatingwall

Separatingwall

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Edition 3April 2007

E-WM-9

3. Raft foundation with floating floor treatment


Flexible or acoustic sealant

A floating floor treatment (for ground floor floatingfloor treatments mineral fibre quilt is not requiredbetween the battens or cradle system)

Concrete raft – mass per unit area of 365 kg/m2

(min)

4. Raft foundation with screed

Mastic sealant, ensure skirting and wall lining areisolated from screed

Perimeter insulation, isolating screed fromseparating wall

Below screed insulation, isolating screed fromraft

Polyethylene

Concrete raft – mass per unit area of 365 kg/m2

(min)

E-WM-9-Aug2007.qxd 29/8/08 14:59 Page 3

Section

Room-in-roof

Room-in-roof





100mm (min) mineral wool insulation minimumdensity 10 kg/m3 or 60mm (min) foil faced PUR orPIR insulation, minimum density 30 kg/m3 (SeeAppendix A)

2 layers of nominal 8 kg/m2 gypsum-based board.Where used rigid insulation may be placedbetween and/or directly beneath rafters


Solid 215mm blockwork to underside of roofcovering


Section


Minimum 140mm wide solid dense block tounderside of roof. Alternatively use a spandrelpanel – see Appendix A

Minimum 200mm mineral wool insulation 10 kg/m3 (min)


300mm(min)

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Ref. Item

1. Are separating wall blocks dense aggregate(1850 to 2300 kg/m3) as featured on the list of acceptableblocks (www.robustdetails.com)?

2. Are blocks laid for the full 215mm width of the wall (i.e. 215mm blocks laid on side)?

3. Is blockwork laid single course stretcher bond?

4. Is separating wall breaking the continuity of the inner leaf? (i.e. is the face of the separating wall abutted and tied orbonded into the inner leaf)


6. Are all joints fully filled?

7. Is render or parge coat applied to the whole wall face? (except where it may be omitted between floor joists/beams)

8. Is render or parge coat at least 13mm thick and scratchfinished?

9. Is mass per unit area of the gypsum based board at least 12.5 kg/m2?






Company:

Site:




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Aircrete thin joint system ■Render and gypsum-based board on dabs ■


Wall ties Wall ties must be AnconBuilding Products StaifixHRT4 or Clan PWT4installed at not more than2.5 ties per square metre



Wall finish Gypsum-based board(nominal 8 kg/m2) mountedon dabs on cement:sandrender (nominal 8mm) withscratch finish

Render mix must not bestronger than 1:1:6 and notstronger than background(see Appendix A)





■ Ensure correct wall ties are used

■ Fully fill all thin joints

■ Make sure there is no connection betweenthe two leaves except for wall ties andfoundations (and insulation)

■ Keep any chases for services to aminimum and fill well with mortar. Staggerchases on each side of the wall to avoidthem being back to back



■ Ensure that only solid blocks (i.e. not hollowor cellular) are used in the construction ofseparating and flanking walls


IMPORTANT

Only the following wall ties may be usedin this separating wall:

■ Ancon Building Products Staifix HRT4

■ Clan PWT4

Refer to Appendix A for the requirementsof wall ties in flanking walls.



Only Saint Gobain-Isover RD Party Wall Rollmay be used. Ensure RD Party Wall Roll isspecified and fitted in accordance withmanufacturer’s recommendations.



Separating Wall – Cavity Masonry (thin joint) E-WM-10

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Tied

Plan

Toothed


Masonry outer leaf


Inner leaf:

• 100mm (min) aircrete thin joint block (450 kg/m3 to 800 kg/m3)




Masonry outer leaf



Inner leaf:




Plan

Separatingwall

Separatingwall





E-WM-10





Section












WM-10-Aug07 10/3/09 12:12 Page 3

robustdetails Edition 3April 2009 Update


4 of 6











Section


Section











WM-10-Aug07 10/3/09 12:12 Page 4




E-WM-10


Section









(See Appendix A)





Section

Room-in-roof

Room-in-roof




6 of 6

Ref. Item



3. Is external (flanking) wall inner leaf aircrete thin joint block (450 to 800 kg/m3)?

4. Are separating wall blocks thin joint compatible aircrete (600 to 800 kg/m3)?


6. Have only Ancon Staifix HRT4 wall ties or Clan PWT4 wall ties been used in the separating wall?


8. Are joints fully filled and sealed?








Company:

Site:





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Lightweight aggregate, or nominated hollow or cellular blocks ■Render and gypsum-based board on dabs ■

Minimum 100mm cavity ■








DO




■ Ensure cavity is minimum 100mm wideand that correct wall ties are used

■ Ensure that only solid blocks or thenominated hollow or cellular blocks areused in the construction of separating andflanking walls. Place blocks with cellularholes open to lower mortar bed




Alternative internal renders

British Gypsum Gyproc Soundcoat Plus(nominal 8mm, minimum 6mm)

Knauf Gypsum Parge Coat (nominal 8mm,minimum 6mm)

Lafarge Ecoat Parge Coat (nominal 8mm,minimum 6mm)

applied in accordance with the manufacturer'sinstructions.


The Besblock Star Performer is the onlyblock of this type currently accepted for useas an alternative to solid blocks in E-WM-11.







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Toothed


Masonry outer leaf



1600 kg/m3) or aircrete block (450 kg/m3 to800 kg/m3) or Besblock “Star Perfomer” block



in introduction to select an acceptable robustdetail separating floor. Then refer to separatingfloor robust detail to identify acceptable innerleaf construction or use Besblock “ StarPerformer” block




Masonry outer leaf




1600 kg/m3) or aircrete block (450 kg/m3 to800 kg/m3) or Besblock “Star Perfomer” block



in introduction to select an acceptable robustdetail separating floor. Then refer to separatingfloor robust detail to identify acceptable innerleaf construction or use Besblock “ StarPerformer” block



Plan

Separatingwall

Separatingwall





E-WM-11





Section












E-WM-11-Nov2007 29/8/08 15:04 Page 3



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Section

Section


E-WM-11-Nov2007 29/8/08 15:04 Page 4




E-WM-11


Section









(See Appendix A)





Section

Room-in-roof

Room-in-roof

E-WM-11-Nov2007 29/8/08 15:04 Page 5



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Nominal 8mm render





Plan

E-WM-11-Nov2007 29/8/08 15:04 Page 6

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8 of 8

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3. Are separating wall blocks lightweight aggregate (1350 to 1600 kg/m3) or Besblock “Star Performer”?













Company:

Site:




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Plasmor “Aglite Ultima” lightweight aggregate blocks ■Render and gypsum-based board on dabs ■

Block Only Plasmor "Aglite Ultima"block density 1050 kg/m3




Wall finish Gypsum-based board(nominal 8 kg/m2) mountedon dabs on cement:sandrender (nominal 8mm) withscratch finishRender mix must not bestronger than 1:1:6 and notstronger than background(see Appendix A)



Note: When using this robust detail inflats/apartments, please refer to Tables 3a and 4 of the Introduction

DO■ Keep cavity and wall ties free from

mortar droppings and debris



■ Ensure that only Plasmor "Aglite Ultima"blocks are used in the construction ofseparating and flanking walls

■ Keep any chases for services to aminimum and fill well with mortar.Stagger chases on each side of thewall to avoid them being back to back

■ Ensure that render is applied to thecomplete face of each leaf with ascratch finish (it may be omitted withinthe floor joist/beam zone)

■ Ensure flues are not integrated withinthe separating wall



Either:

British Gypsum Gyproc Soundcoat Plus(nominal 8mm, minimum 6mm)orKnauf Gypsum Parge Coat (nominal 8mm,minimum 6mm)orLafarge Ecoat Parge Coat (nominal 8mm,minimum 6mm)


robustdetails Edition 3September 2009 Update


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Plan

Toothed


Masonry outer leaf


Inner leaf:

• 100mm (min) Plasmor "Aglite Ultima" 1050kg/m3 block


Close cavity with a flexible cavity stop unless itis fully filled with built in mineral wool insulation


Masonry outer leaf



Inner leaf:• 100mm (min) Plasmor "Aglite Ultima" 1050

kg/m3 block • internal finish 13mm plaster or nominal

8 kg/m2 gypsum-based board


Plan

Separatingwall

Separatingwall




E-WM-12





Section












E-WM-12 Apr2011_Part E-WM-6-Jan2005 15/03/2011 15:28 Page 3



4 of 6











Section


Section














E-WM-12


Section


Cavity separating wall continuous to undersideof roof. Alternatively use spandrel panel – seeAppendix A







(See Appendix A)



Cavity separating wall continuous to undersideof roof covering


Section

Room-in-roof

Room-in-roof




6 of 6

Ref. Item



3. Are separating wall blocks Plasmor "Aglite Ultima" blocks?

4. Are external (flanking) wall blocks Plasmor "Aglite Ultima"blocks?







11. Where there is a separating floor (e.g. flats/apartments), hasthe correct flanking/isolation been provided to the perimeter of the floating floor/screed?





Company:

Site:





Contact details for technical assisstance from Plasmor, manufacturer of "Aglite Ultima" lightweight aggregate blocks:



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Aircrete thin joint - untied system ■Render and gypsum-based board on dabs ■


Wall ties No wall ties are to be insertedin the separating wall. Note:The structural adequacy ofuntied separating wallsshould be assessed by astructural engineer



Wall finish Gypsum-based board (nominal8 kg/m2) mounted on dabs oncement:sand render (nominal8mm) with scratch finish

Render mix must not bestronger than 1:1:6 and notstronger than background (seeAppendix A)



DO

■ Keep cavity (and insulation) free frommortar droppings and debris

■ Fully fill all thin joints

■ Make sure there is no connectionbetween the two leaves except forfoundations (and insulation)






IMPORTANT

Note: The structural adequacy of untiedseparating walls should be assessed by astructural engineer.

Should it be necessary to introduce wallties into the cavity of the aircrete thin jointmasonry separating wall please refer to E-WM-10.



Only Saint Gobain-Isover RD Party Wall Rollmay be used. Ensure RD Party Wall Roll isspecified and fitted in accordance withmanufacturer’s recommendations



Separating Wall – Cavity Masonry thin joint - untied E-WM-13

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Plan

Toothed


Masonry outer leaf


Inner leaf:





Masonry outer leaf



Inner leaf:




Plan

Separatingwall

Separatingwall





E-WM-13





Section












E-WM-13-Mar2008 10/3/09 13:23 Page 3



4 of 6











Section


Section











E-WM-13-Mar2008 10/3/09 13:23 Page 4




E-WM-13


Section









(See Appendix A)




External wall cavity closed at eaves level with asuitable flexible material (e.g. mineral wool). If arigid material is used, then it should only bebonded to one leafSection

Room-in-roof

Room-in-roof




6 of 6

Ref. Item



3. Are separating wall blocks thin joint compatible aircrete (600 to 800 kg/m3)?

4. Is external (flanking) wall inner leaf aircrete thin joint block (450 to 800 kg/m3)?


6. Is the separating wall cavity completely free from wall tiesthroughout its full height?


8. Are joints fully filled and sealed?








Company:

Site:





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Lightweight aggregate blocks ■35mm (minimum) Saint Gobain-Isover RD35 Acoustic Batt ■















DO









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100mm (min)

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Masonry outer leaf


Inner leaf where there is no separating floor e.g. for houses• 100mm (min) concrete block (1350 kg/m3 to1600 kg/m3) or aircrete block (450 kg/m3 to800 kg/m3)







Masonry outer leaf




Inner leaf where there is no separating floore.g. for houses• 100mm (min) concrete block (1350 kg/m3 to1600 kg/m3) or aircrete block (450 kg/m3 to800 kg/m3)





100mm (min)

Plan

Separatingwall

Separatingwall





E-WM-14

100mm (min)





Section

100mm (min)













4 of 8



100mm (min)

100mm (min)

















Section

Section






E-WM-14

100mm (min)


Section








100mm (min)



(See Appendix A)






Section

Room-in-roof

Room-in-roof




6 of 8




Gypsum-based board (nominal 9.8 kg/m2) mountedon dabs

High density block (minimum 2270 kg/m3) behindstarter blocks from ground level up to at least where gather blocks start




Plan

100mm (min) overlap of Isover batts

100mm (min) overlap of Isover slabs

Ensure that mortar and debris does notcollect on the insulation batts, to avoida connection between the wall leaves

100mm (min)

100mm (min)


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Aircrete blocks ■35mm (minimum) Saint Gobain-Isover RD35 Acoustic Batt ■














■ Ensure wall ties do not coincide with bedreinforcement



DO









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Masonry outer leaf









Masonry outer leaf




Inner leaf where there is no separating floore.g. for houses• 100mm (min) aircrete block (450 kg/m3 to 800 kg/m3)





Plan

Separatingwall

Separatingwall





E-WM-15





Section













4 of 6











Section

Section

Sketch shows E-FC-5 type separating floor andCT5 type ceiling treatment













E-WM-15


Section










(See Appendix A)






Section

Room-in-roof

Room-in-roof




6 of 6

Ref. Item



3. Is external (flanking) wall inner leaf aircrete (450 to 800 kg/m3)?

4. Are separating wall blocks aircrete (600 to 800 kg/m3)?













Company:

Site:








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Dense aggregate blocks ■Render and gypsum-based board on dabs ■





Wall finish Gypsum-based board(nominal 9.8 kg/m2) mountedon dabs on cement:sandrender (nominal 8mm) withscratch finishTypical render mix 1:1:6 to1:1/2:4. Render mix must notbe stronger than background(see Appendix A)



DO






■ Ensure that render is applied to thecomplete face of each leaf (it may beomitted within the floor joist/beam zone)



Either:








2 of 8


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Toothed


Masonry outer leaf










Masonry outer leaf










Plan

Separatingwall

Separatingwall




Edition 3July 2009

E-WM-16


Complete wall face rendered (except inthe floor joist/beam zone where it may beomitted)



Section












E-WM-16-Jul2009 15/6/09 07:40 Page 3

robustdetails Edition 3July 2009


4 of 8





















Section

Section


E-WM-16-Jul2009 15/6/09 07:40 Page 4



Edition 3July 2009

E-WM-16


Section









(See Appendix A)





Section

Room-in-roof

Room-in-roof

E-WM-16-Jul2009 15/6/09 07:40 Page 5



6 of 8


Plan

Plan


Nominal 8mm render

Gypsum-based board (nominal 9.8 kg/m2) on dabs

High density block (minimum 2270 kg/m3) behindstarter blocks from ground level up to at leastwhere gather blocks start



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8 of 8

Ref. Item
















Company:

Site:




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Lightweight aggregate blocks ■Saint Gobain-Isover RD Party Wall Roll ■



or Plasmor Aglite Ultima1050 kg/m3





Insulation Isover RD Party Wall Roll



■ Ensure RD Party Wall Roll is specifiedand fitted in accordance withmanufacturer’s recommendations



DO

■ Keep cavity, insulation rolls and wall tiesfree from mortar droppings and debris


■ Make sure there is no connectionbetween the two leaves except for wallties, insulation and foundation


■ Ensure all Isover RD Party Wall Rolls aretightly butted together and half cuts aremade with a clean sharp knife

E-WM-17-Jan 2011_Part E-WM-8-Jun2005 15/12/2010 14:28 Page 1



2 of 6


Tied

Plan

Toothed


Masonry outer leaf


Inner leaf where there is no separating floor e.g. for houses• 100mm (min) concrete block (1350 kg/m3 to1600 kg/m3) or aircrete block (450 kg/m3 to 800 kg/m3) or Plasmor Aglite Ultima (1050 kg/m3)


Inner leaf where there is a separating floor e.g. for flats/apartments• if using robust detail for floor, refer to Table 3a in introduction to select an acceptable robust detailseparating floor. Then refer to separating floorrobust detail to identify acceptable inner leafconstruction


Isover RD Party Wall Roll (no gaps to remain)


Close external wall cavity with a flexible cavitystop. (Optional if external wall cavity is fully filledwith built in mineral wool insulation)

Masonry outer leaf


Close external wall cavity with a flexible cavitystop. (Optional if external wall cavity is fully filledwith built in mineral wool insulation)


Inner leaf where there is no separating floor e.g. for houses• 100mm (min) concrete block (1350 kg/m3 to1600 kg/m3) or aircrete block (450 kg/m3 to 800 kg/m3) or Plasmor Aglite Ultima (1050 kg/m3)


Inner leaf where there is a separating floor e.g. for flats/apartments• if using robust detail for floor, refer to Table 3a in introduction to select an acceptable robust detailseparating floor. Then refer to separating floorrobust detail to identify acceptable inner leafconstruction or use Plasmor Aglite Ultima



Plan

Separatingwall

Separatingwall


or use Plasmor Aglite Ultima



Edition 3July 2009

E-WM-17





Section












E-WM-17-Jul 2009 1/7/09 06:55 Page 3



4 of 6





















Section

Section


E-WM-17-Jul 2009 1/7/09 06:55 Page 4




E-WM-17


Section










(See Appendix A)






Section

Room-in-roof

Room-in-roof




6 of 6

Ref. Item



3. Are separating wall blocks lightweight aggregate (1350 to 1600 kg/m3) or Plasmor Aglite Ultima (1050 kg/m3)?


5. Are separating wall ties to Approved Document E “Tie type A”(see Appendix A)?



8. Is Isover RD Party Wall Roll used?

9. Are insulation rolls tightly butted together?







Company:

Site:




Contact details for technical assistance from Saint Gobain-Isover, manufacturer of Isover RD Party Wall Roll:




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E-WM-18Dense aggregate blocks ■

Wet plaster ■








DO






■ Select an alternative robust detail if fluesare required in the separating wall








Tied

Plan

Toothed


Masonry outer leaf


Inner leaf where there is no separating floor e.g. for houses• 100mm (min) concrete block (1350 kg/m3 to1600 kg/m3, 1850 kg/m3 to 2300 kg/m3) oraircrete block (450 kg/m3 to 800 kg/m3) • Internal finish - 13mm plaster or nominal 8 kg/m2 gypsum-based board

Inner leaf where there is a separating floor e.g. for flats/apartments• If using robust detail for floor, refer to Table 3a in introduction to select an acceptable robustdetail separating floor. Then refer to separatingfloor robust detail to identify acceptable innerleaf construction• If using floor requiring pre-completion testing,seek specialist advice



Masonry outer leaf



Inner leaf where there is no separating floore.g. for houses• 100mm (min) concrete block (1350 kg/m3 to1600 kg/m3 or 1850 kg/m3 to 2300 kg/m3) oraircrete block (450 kg/m3 to 800 kg/m3) • Internal finish - 13mm plaster or nominal 8 kg/m2 gypsum-based board

Inner leaf where there is a separating floor e.g. for flats/apartments• If using robust detail for floor, refer to Table 3a in introduction to select an acceptable robustdetail separating floor. Then refer to separatingfloor robust detail to identify acceptable innerleaf construction• If using floor requiring pre-completion testing,seek specialist advice


Plan

Separatingwall

Separatingwall


robustdetails3 of 6



E-WM-18



Section









Section


robustdetails 4 of 6 Edition 3September 2009 Update



6. Ground floor junction: timber floor, beam and block, precast concrete plank, castin-situ concrete slab or ground bearing slab






Separating floor:












Section

Section


robustdetails5 of 6



E-WM-18


Section








(See Appendix A)


Cavity masonry separating wall continuous to underside of roof covering


Section

Room-in-roof

Room-in-roof

robustdetails 6 of 6 Edition 3September 2009 Update


Ref. Item














Company:

Site:




robustdetails


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Minimum 100mm cavity wall with the MONARFLOOR® BRIDGESTOP® system ■Dense or lightweight aggregate blocks or nominated hollow or cellular blocks ■

Render and gypsum-based board on dabs ■Attached houses only ■

Block density 1350 to 1600 kg/m3 or1850 to 2300 kg/m3

Wall ties Wall ties must be AnconBuilding Products StaifixHRT4










■ Ensure cavity is minimum 100mm wideand that correct wall ties are used

■ Ensure that only solid blocks or thenominated hollow or cellular blocks areused in the construction of separating andflanking walls. Place blocks with cellularholes open to lower mortar bed




Alternative internal renders

British Gypsum Gyproc Soundcoat Plus(nominal 8mm, minimum 6mm)

Knauf Gypsum Parge Coat (nominal 8mm,minimum 6mm)

Lafarge Ecoat Parge Coat (nominal 8mm,minimum 6mm)

applied in accordance with the manufacturer'sinstructions.


The Besblock Star Performer is the onlyblock of this type currently accepted for useas an alternative to solid blocks in E-WM-19.







2 of 6


Tied

Plan

Toothed


Masonry outer leaf


Inner leaf• 100mm (min) concrete block (1350 kg/m3 to

1600 kg/m3 or 1850 kg/m3 to 2300 kg/m3) oraircrete block (450 kg/m3 to 800 kg/m3) orBesblock "Star Performer" block




Masonry outer leaf




1600 kg/m3 or 1850 kg/m3 to 2300 kg/m3) oraircrete block (450 kg/m3 to 800 kg/m3) orBesblock "Star Performer" block



Plan

Separatingwall

Separatingwall





E-WM-19





Section












E-WM-19 10/12/09 08:33 Page 3

robustdetails Edition 3December 2009 Update


4 of 6

5. Ground floor junction: insulated raft foundation



MONARFLOOR® BRIDGESTOP® Tie to penetrate atmax 450mm centres. Ties are reversible. Mayalso be used as render depth marker.

MONARFLOOR® BRIDGESTOP® Quilt in two lifts toprevent mortar droppings touching bothmasonry leaves.

Insulated screed or floating floor treatment(see Appendix A2 for details)

500mm wide MONARFLOOR® BRIDGESTOP® 3mm HPAcoustic Membrane laid under the party wallover the dpm. This is an integral part of thesystem.

Insitu concrete 365kg/m2 (min) mass per unitarea.


MONARFLOOR® BRIDGESTOP® Tie to penetrate atmax 450mm centres. Ties are reversible. Mayalso be used as render depth marker.

MONARFLOOR® BRIDGESTOP® Quilt in two lifts toprevent mortar droppings touching bothmasonry leaves.


Ground floor construction:• timber joists built in with:






500mm wide MONARFLOOR® BRIDGESTOP® 3mm HPAcoustic Membrane laid under the party wall overthe dpm. This is an integral part of the system.

Section

Section

BRIDGESTOP® system can be positioned on topof floor structure.

E-WM-19 10/12/09 08:33 Page 4




E-WM-19


Section









(See Appendix A)





Section

Room-in-roof

Room-in-roof

E-WM-19 10/12/09 08:33 Page 5

robustdetails Edition 3December 2009 Update


6 of 6

Ref. Item



3. Are separating wall blocks solid aggregate (1350-1600 kg/m3

or 1850-2300 kg/m3) or Besblock “Star Performer” (with cellsopen to lower bed)?

4. Has 500mm wide MONARFLOOR® BRIDGESTOP® 3mm HP AcousticMembrane been laid under the party wall over the dpm?

5. Has MONARFLOOR® BRIDGESTOP® Quilt been installed in 2 lifts withMONARFLOOR® BRIDGESTOP® Ties?

6. Is cavity above the quilt free from droppings and debris?

7. Are separating wall ties Staifix HRT4?


9. Are all block joints fully filled?


11. Is render coat applied to the whole wall face (except where itmay be omitted between floor joists/beams)?






Company:

Site:




Contact details for technical assistance from Icopal-MONARFLOOR®, manufacturer of the MONARFLOOR® BRIDGESTOP® system:

Telephone: 0161 866 6540 Fax: 0161 865 8433 E-mail: [email protected]

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Lightweight aggregate blocks ■Saint Gobain-Isover RD Party Wall Roll ■







Insulation 100mm Isover RD Party Wall Roll





DO

■ Keep cavity, insulation rolls and wall tiesfree from mortar droppings and debris


■ Make sure there is no connectionbetween the two leaves except for wallties, insulation and foundation


■ Ensure all 100mm Isover RD Party WallRolls are tightly butted together and halfcuts are made with a clean sharp knifeand are installed in accordance with themanufacturer’s instructions

E-WM-20 Sep 2010_Part E-WM-8-Jun2005 06/10/2010 08:13 Page 1



2 of 6


Tied

Plan

Toothed


Masonry outer leaf


Inner leaf where there is no separating floor e.g. for houses• 100mm (min) concrete block (1350 kg/m3 to1600 kg/m3) or aircrete block (450 kg/m3 to800 kg/m3)




100mm Isover RD Party Wall Roll (no gaps to remain)



Masonry outer leaf




Inner leaf where there is no separating floore.g. for houses• 100mm (min) concrete block (1350 kg/m3 to1600 kg/m3) or aircrete block (450 kg/m3 to800 kg/m3)





Plan

Separatingwall

Separatingwall

100mm (min)

100mm (min)





E-WM-20

100mm (min)





Section

100mm (min)


100mm Isover RD Party Wall Roll (no gaps toremain)











4 of 6



100mm (min)

100mm (min)

















Section

Section






E-WM-20

100mm (min)


Section








100mm (min)



(See Appendix A)






Section

Room-in-roof

Room-in-roof




6 of 6

Ref. Item





5. Are separating wall ties to Approved Document E “Tie type A”(see Appendix A)?



8. Is 100mm RD Party Wall Roll used?

9. Are insulation rolls tightly butted together?







Company:

Site:




Contact details for technical assistance from Saint Gobain-Isover, manufacturer of Isover RD Party Wall Roll:




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E-WM-21™Lightweight aggregate blocks ■

Wet plaster ■Minimum 100mm cavity ■








DO






■ Select an alternative robust detail™ whereflues are required in the separating wall




E-WM-21 Apr 2011_Part E-WM-2-Jan 2005 08/04/2011 14:29 Page 1

robustdetails® 2 of 6 Edition 3April 2011 Update

Separating Wall – Cavity Masonry E-WM-21™


Tied

Plan

Toothed


Masonry outer leaf



1600 kg/m3) or aircrete block (450 kg/m3 to800 kg/m3).


Inner leaf where there is a separating floor e.g. for flats/apartments• If using robust detail™ for floor, refer to Table 3a

in introduction to select an acceptable robustdetail™ separating floor. Then refer to separatingfloor robust detail™ to identify acceptable innerleaf construction




Masonry outer leaf






Inner leaf where there is a separating floor e.g. for flats/apartments• If using robust detail™ for floor, refer to Table 3a

in introduction to select an acceptable robustdetail™ separating floor. Then refer to separatingfloor robust detail™ to identify acceptable innerleaf construction



Plan

Separatingwall

Separatingwall





E-WM-21™



Section









Section






6. Ground floor junction: timber floor, beam and block, precast concrete plank, cast in-situ concrete slab or ground bearing slab






Separating floor:

• if using robust detail™ for floor, refer to Table3a in introduction and see separating floorrobust detail™ for floating floor and ceilingoptions











Section

Section

Sketch shows E-FC-1™ type separating floor,FFT1™ type floating floor treatment and CT3™type ceiling





E-WM-21™


Section



External wall cavity closed at eaves level with asuitable flexible material (e.g. mineral wool). If arigid material is used, then it should only bebonded to one leaf.





(See Appendix A)




Section





Ref. Item












®: UK registered trade mark no. 2291665

™: trade mark

© Robust Details Limited 2011. All rights reserved. No part of this Handbook (other than the checklists) may be reproduced in any materialform or issued or communicated to the public (including photocopying or storing it in any medium by electronic means, and whether or nottransiently or incidentally to some other use of this Handbook) without the prior written permission of Robust Details Limited except inaccordance with the provisions of the Copyright, Designs and Patents Act 1988. Warning: the doing of an unauthorised act in relation to a copyright work may result in both a civil claim for damages and criminal prosecution.


Company:

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Timber

Tim

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Separating Wall – Timber Frame

Edition 3April 2007

E-WT-1Without sheathing board ■

Twin timber frames ■

Wall width 240mm (min) betweeninner faces of wall linings.50mm (min) gap betweenstuds (must not be bridgedby any diagonal bracing)

Wall lining - 2 or more layers ofgypsum-based board(total nominal mass perunit area 22 kg/m2), bothsides- all joints staggered

Absorbent 60mm (min) mineral woolmaterial batts or quilt (density

10 – 60 kg/m3) both sides.Material may be unfaced,paper faced or wire-reinforced

Ties Ties between frames notmore than 40mm x 3mm,at 1200mm (min) centreshorizontally, one row ofties per storey heightvertically

External Outer leaf masonry with (flanking) wall minimum 50mm cavity

DO

■ Keep wall linings at least 240mm apart

■ Ensure quilt or batts cover whole liningarea, fitting tight between studs withoutsagging

■ Ensure that all cavity stops/closers areflexible or are fixed to one frame only

■ Make sure there is no connectionbetween the two leaves except whereties are necessary for structural reasons(see above).

■ Stagger joints in wall linings to avoid air paths

■ Seal all joints in outer layer with tape orcaulk with sealant


Note: Partial sheathing of the cavity facesof the separating wall is permitted forstructural reasons. This may be for alength of 1800mm (max) to each end ofboth leaves or to the entire face of oneleaf. However, if the entire cavity face ofboth leaves requires sheathing board,robust detail E-WT-2 must be used.

Structural framing details may vary slightlybetween different manufacturers and thisis permitted, however, all dimensionspecifications within this RD must beadhered to.

E-WT-1-Apr2007 29/8/08 15:15 Page 1


Separating Wall – Timber Frame E-WT-1


Plan

Plan


Masonry outer leaf (min 100mm thick)


Inner leaf where there is no separating floor,e.g. for houses• one layer of gypsum-based board nominal

8 kg/m2

Inner leaf where there is a separating floor, e.g. for flats/apartments• if using robust detail for floor, refer to Table 3b

in introduction to select an acceptable robustdetail separating floor and use two layers ofgypsum-based board nominal 8kg/m2 eachlayer


Seal all perimeter joints with tape or caulk with sealant

Close cavity with a cavity stop (see Appendix A)

Mineral wool insulation 10 kg/m3 (min)



Sheathing board

Inner leaf where there is no separating floore.g. for houses• one layer of gypsum-based board nominal

8 kg/m2







E-WT-1-Apr2007 29/8/08 15:15 Page 2

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Edition 3April 2007

E-WT-1

3. Internal floor junction

Floor decking may run under sole plates

Internal floor to comply with BuildingRegulations Requirement E2

Floor joists may span in either direction


Close spaces between floor joists with fulldepth timber blocking where joists are at rightangles to wall

Seal all perimeter joints with tape or caulk withsealant

Section





Close spaces between floor joists with full depth timber blocking or continuous headerjoist where joists are at right angles to wall

Separating floor:• if using robust detail for floor, refer to Table 3b

in introduction and see robust detail forseparating floor for floating floor and ceiling options



Close cavity with a cavity stop (see Appendix A)Section

Alternative detail

Rip liner

Sketch shows E-FT-1 type separating floor

E-WT-1-Apr2007 29/8/08 15:15 Page 3



5. Internal wall junction



Where required internal wall to comply withBuilding Regulations Requirement E2

Diagram 5.1 shows junction detail where theinternal wall is fixed through the separating wall lining; other junction details are acceptableprovided all joints are sealed with tape orcaulked with sealant

Diagram 5.2 shows junction where theseparating wall lining is continuous

Ground floors not continuous betweendwellings

Flexible or acoustic sealant (may be omittedwhen timber ground floor is used)


• timber floor joists:- may span in either direction- floor decking may run under sole plates- close spaces between floor joists with full

depth timber blocking where joists are atright angles to wall, or

• beam and block floor with all voids filled with mortar, or

• precast concrete planks with all voidsbetween planks and blockwork filled withmortar or flexible sealant, or

• cast in-situ concrete suspended slab, or• ground bearing slab

Plan

Section

Diagram 5.1

Diagram 5.2

E-WT-1-Apr2007 29/8/08 15:15 Page 4

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Edition 3April 2007

E-WT-1

7. Raft foundation

Section



A floating floor treatment must be used (forground floor floating floor treatments mineralfibre quilt is not required between the battens or cradle system)

Concrete raft - mass per unit area of 365 kg/m2 (min)

8. Roof junction - pitched roof with no room-in-roof


Cavity separating wall continuous to undersideof roof

Wall lining above ceiling – 2 or more layers ofgypsum-based board (minimum total nominalmass per unit area 16 kg/m2), both sides, alljoints staggered

Absorbent material not required in separatingwall above ceiling

External wall cavity closed at eaves level with asuitable flexible material (e.g. mineral wool). If a rigid material is used, then it should only bebonded to one leaf

100mm (min) mineral wool insulation, 10 kg/m3

(min), between ceiling joists


Section

Alternative detailwith screed finish


Perimeter insulation, isolating screed from timberframe

Below screed insulation, isolating screed from raft

Polyethylene

E-WT-1-Apr2007 29/8/08 15:15 Page 5



9. Services and sockets in the separating wall

9.1 – electrical sockets, switches, etc.

Provide two or more layers of gypsum-basedboard (total nominal mass per unit area 22 kg/m2) to enclose electrical boxes

Stagger sockets, switches, etc. on each side of the wall such that they are not positioned inopposite bays

Alternatively provide a service void on surfaceof separating wall. This is the preferred methodwhere more than one socket, switch, etc. areclose together, e.g. in a kitchen.

Studs or battens used to create the servicezone should be securely fixed back to theseparating wall structure

Plan

Plan

Plan

9.2 – piped services

Service duct within separating wall

Provide two or more layers of gypsum-basedboard (total nominal mass per unit area 22 kg/m2) to enclose pipes

Stagger services on each side of wall such thatthey are not positioned in opposite bays

Note: this detail is not applicable for SVPs orgas pipes.

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Ref. Item

1. Are wall linings at least 240mm apart?

2. Is absorbent material at least 60mm thick?

3. Does absorbent material cover whole lining area except above ceiling line in roof void zone?

4. Are all joints in wall lining staggered?

5. Is separating wall lining correct mass per unit area on both sides?

6. Are all joints sealed with tape or caulked with sealant?

7. Are services installed in accordance with sketches 9.1 and 9.2?

8. If there is a separating floor (e.g. in flats/apartments) has theresilient flanking strip been provided?





Company:

Site:




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Edition 3April 2007

E-WT-2With sheathing board ■

Twin timber frames ■

Wall width 240mm (min) betweeninner faces of wall linings.50mm (min) gap betweenwall panels

Wall lining - 2 or more layers ofgypsum-based board(total nominal mass perunit area 22 kg/m2), bothsides - all joints staggered

Sheathing 9mm (min) thick board





DO


■ Ensure that the 50mm (min) gap betweenthe wall panels is maintained



■ Make sure there is no connectionbetween the two leaves except whereties are necessary for structural reasons(see above)




Note: Structural framing details may varyslightly between different manufacturersand this is permitted, however, alldimension specifications within this RDmust be adhered to.

E-WT-2-Apr2007 29/8/08 15:17 Page 1




Plan

Plan





8 kg/m2









Sheathing board


8 kg/m2







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Section










Close cavity with a cavity stop (see Appendix A)Section

Alternative detail

Rip liner


E-WT-2-Apr2007 29/8/08 15:17 Page 3

















Plan

Section

Diagram 5.1

Diagram 5.2

*Note – Ensure substructure masonry is correctlyset out to enable timber frame to achieve therequired gap between wall panels

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7. Raft foundation

Section














Section





Polyethylene

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Plan

Plan

Plan






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Ref. Item


2. Are sheathing boards at least 50mm apart?




6. Is separating wall lining correct mass per unit areaon both sides?








Company:

Site:




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E-WT-3ElecoFrame prefabricated panels ■

Twin timber frames ■For use in timber frame houses and flats/apartments ■

Wall width 240mm (min) betweeninner faces of wall linings.50mm (min) gap betweenstuds (must not be bridgedby any diagonal bracing)

Wall lining - 2 or more layers ofgypsum-based board(total nominal mass perunit area 22 kg/m2), bothsides- all joints staggered



Ties Ties between frames notmore than 40mm x 3mm,at 1200mm (min) centreshorizontally, one row of tiesper storey height vertically

External Outer leaf masonry with (flanking) wall minimum 50mm cavity.

Inner leaf lined with 45mm(min) foil faced PIRinsulation, minimumdensity 32 kg/m3

Note: When using this robust detail inflats/apartments, please refer to Tables 3band 4 of the Introduction

DO




■ Make sure there is no connectionbetween the two leaves except whereties are necessary for structural reasons(see above).




Note: Partial sheathing of the cavity facesof the separating wall is permitted forstructural reasons. This may be for a lengthof 1800mm (max) to each end of bothleaves or to the entire face of one leaf.

FRAME CONSTRUCTION

Nail plate

ElecoFrameidentification plate

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Plan

Plan




Inner leaf where there is no separating floor,e.g. for houses• one layer of gypsum-based board nominal

8 kg/m2

Inner leaf where there is a separating floor, e.g. for flats/apartments• use two layers of gypsum-based board

nominal 8kg/m2 each layer, and refer to Tables 3b and 4 in Introduction




Inner leaf lined with 45mm (min) foil faced PIRinsulation, minimum density 32 kg/m3



Inner leaf lined with 45mm (min) foil faced PIRinsulation, minimum density 32 kg/m3


8 kg/m2

Inner leaf where there is a separating floor, e.g. for flats/apartments• use two layers of gypsum-based board

nominal 8kg/m2 each layer, and refer to Tables 3b and 4 in Introduction



Close cavity with cavity stops (see Appendix A)

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Section






Plan

Diagram 5.1

Diagram 5.2

E-WT-3-Nov2008 17/11/08 13:09 Page 3












Section

6. Raft foundation

Section









Polyethylene

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Section

E-WT-3-Nov2008 17/11/08 13:09 Page 5









Plan

Plan

Plan






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Ref. Item

1. Are ElecoFrame panels being used?


3. Is absorbent material at least 60mm thick in both leaves of theseparating wall?






9. Is inner leaf lined with 45mm (min) foil faced PIR insulation,minimum density 32 kg/m3?





Company:

Site:




Contact details for technical assistance from Eleco Timber Frame Ltd, manufacturer of ElecoFrame prefabricated panels:


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E-WT-4With sheathing board ■

Twin timber frames ■Excel Industries Warmcel 500 insulation ■

Wall width 240mm (min) betweeninner faces of wall linings.60mm (min) gap betweenwall panels

Wall lining - 2 or more layers ofgypsum-based board(total nominal mass perunit area 22 kg/m2), bothsides - all joints staggered

Sheathing 9mm (min) thick board

Absorbent 89mm (min) Warmcel 500material insulation (blown or

injected by ExcelIndustries-approvedinstaller) fully filling studvoids



DO


■ Ensure that the 60mm (min) gap betweenthe wall panels is maintained

■ Ensure Warmcel 500 is installed behindthe whole lining area, without slumping

■ Ensure stud voids are fully filled

■ Make sure there is no connectionbetween the two leaves except whereties are necessary for structural reasons(see above)




Note: Structural framing details may varyslightly between different manufacturersand this is permitted, however, alldimension specifications within this RDmust be adhered to.

E-WT-4-Dec2009 9/11/09 08:16 Page 1




Plan

Plan





8 kg/m2






Full fill with Warmcel 500



Sheathing board


8 kg/m2






Full fill with Warmcel 500

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Section











Section

Alternative detail

Rip liner


E-WT-4-Dec2009 9/11/09 08:16 Page 3

















Plan

Section

Diagram 5.1

Diagram 5.2

*Note – Ensure substructure masonry is correctlyset out to enable timber frame to achieve therequired gap between wall panels

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7. Raft foundation

Section














Section





Polyethylene

E-WT-4-Dec2009 9/11/09 08:16 Page 5









Plan

Plan

Plan






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Ref. Item


2. Are sheathing boards at least 60mm apart?


4. Are stud voids fully filled with Warmcel 500 except aboveceiling line in roof void zone?


6. Is separating wall lining correct mass per unit areaon both sides?








Company:

Site:




Contact details for technical assistance from Excel Industries, providers of Warmcel 500:


E-WT-4-Dec2009 9/11/09 08:16 Page 8

Steel

Ste

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Separating Wall – Steel Frame

Edition 3April 2007

E-WS-1Twin metal frames ■

For use in lightweight steel frame houses and flats/apartments ■

Wall lining - 2 or more layers of gypsum-based board (minimum totalnominal mass per unit area22 kg/m2) both sides

- all joints staggered

Wall width 200mm (min) between innerfaces of wall linings.

Absorbent - one layer 50mm (min)material unfaced mineral wool batts

(density 33-60 kg/m3), or- two layers 25mm (min)unfaced mineral wool batts(density 33-60 kg/m3), or- two layers 25mm (min)unfaced mineral wool quilt(density min 10 kg/m3)

External Outer leaf masonry with(flanking) wall minimum 50mm cavity

DO■ Keep wall linings at least 200mm apart

■ Ensure the batts or quilt cover whole wallarea and are fitted together tightly

■ Make sure batts or quilt are not tightlycompressed by the twin frames


■ Make sure there is no connectionbetween the two leaves except whereties are necessary for structural reasons




Notes: The steel frame profiles shown are indicative only. Other profiles areacceptable.

This robust detail is only suitable for use inlightweight steel frame houses andflats/apartments. When using this robustdetail in flats/apartments please refer toTables 3 and 4 of the Introduction. Inrelation to separating floors the inner leafof external (flanking) walls may requirefurther treatments – seek specialist advice.

All sketches show one layer of mineralwool batts placed between the studs. It is also acceptable to place a layer ofmineral wool batts or quilt on both sides of the wall.

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Separating Wall – Steel Frame E-WS-1





Fill the void between between studs withmineral wool batt, 10 kg/m3 (min), for 600mm(min) from separating wall

Inner leaf – one layer of gypsum-based boardnominal 8 kg/m2


Close cavity with a flexible cavity stop

Plan

Plan






Fill the void between between studs withmineral wool batt, 10 kg/m3 (min), for 600mm(min) from separating wall

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Lightweight steel internal floor to comply withBuilding Regulations Requirement E2



Close spaces between floor joists where joistsare at right angles to wall


Fill the void between between studs withmineral wool batt for 300mm (min) down from ceiling

Section


Section

Mineral wool insulation batts, 33-60kg/m3,between studs to 600mm (min) above bottom railof steel frame

5mm (min) flanking strips installed at perimeterand turned beneath skirting board

Flexible acoustic sealant below wall lining

Separating floor:

• if using robust detail for floor, refer to Table 3c inIntroduction and see robust detail for separatingfloor for floating floor and ceiling options


Floors should not be continuous between dwellings

Fixing angle

Resilient bar below joists at 450mm centres fixedthrough joist flange to manufacturer’s detail

Mineral wool insulation batts, 33-60kg/m3, betweenstuds to 600mm (min) below decking level

E-WS-1-Apr2011_Part E-WS-1-Jan2005 15/03/2011 14:13 Page 3



6. Ground floor junction: beam and block, precast concrete plank, cast-in situconcrete suspended slab or ground bearing slab






• cast-in situ concrete suspended slab, or

• ground bearing slabSection



Separating wall lining continuous


Other junction details are acceptable providedall joints are sealed with tape or caulked withsealant

Plan


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7. Raft foundation

Section



A floating floor treatment must be used (forground floor floating floor treatments mineralfibre quilt is not required between the battensor cradle system)



Junction between separating wall and rooffilled with flexible closer.







Section



Perimeter insulation, isolating screed from metalframe


Polyethylene








Fire resistant seal where required by Part B ofthe Building Regulations

Service void on surface of separating wall. This is the preferred method where more than one socket, switch, etc. are close together, e.g. in a kitchen.

Studs or battens used to create the servicezone should be securely fixed back to theseparating wall structure.

Plan

Plan

Plan



Note: this detail is not applicable for SVPs orgas pipes


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Company:

Site:


Ref. Item


2. Is the absorbent material unfaced mineral wool batts or quilt of appropriate density and thickness?

3. Are batts or quilt fitted together tightly ?

4. Are all joints in the wall lining staggered?



7. Are services installed in accordance with sketches 8.1 & 8.2?






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Edition 3April 2007

E-WS-2British Gypsum GypWall QUIET IWL ■

Use with reinforced concrete frame construction only ■

Wall lining - 2 layers of 15mm GyprocSoundBloc plasterboardboth sides- all joints staggered

Steel frame Gypframe studs 60mm deep (min)

Wall width 190mm (min) betweeninner faces of wall linings

Absorbent 100mm (min) Isovermaterial mineral wool quilt (density

10 kg/m3 min)

External Outer leaf masonry or (flanking) wall precast panels with

minimum 50mm cavity

Note: the steel frame profiles shown areindicative only.

DO


■ Ensure that the quilt covers the wholewall area without gaps

■ Make sure the quilt is compressed by the twin frames

■ Make sure there is no connectionbetween the two leaves

■ Stagger joints in wall linings to avoid airpaths


■ Follow the manufacturer’s instructions


Alternative external (flanking)wall construction

Storey height glazing units are anacceptable alternative to the cavity wallsillustrated:

• glazing units should not be continuousbetween storeys

• mullion or transom supports/framingshould not be continuous betweendwellings

• the junction between the separating walland the external (flanking) wall must onlyoccur at the position of concrete columns

E-WS-2-Apr2007 29/8/08 15:21 Page 1



2. External (flanking) wall junction – masonry inner leaf (at concrete column position)

1. External (flanking) wall junction – steel or timber frame inner leaf(at concrete column position)

600m

m(m

in)

600m

m(m

in)

Masonry outer leaf or precast panels (min100mm thick)


Inner leaf• two layers of gypsum-based board nominal

8 kg/m2 each layer and 50mm (min) mineralwool, 10 kg/m3 (min), placed between studsfor first 600mm, or

• one layer of gypsum-based board nominal 10 kg/m2 and 50mm (min) mineral wool, 10 kg/m3 (min), placed between all studs

Frames fixed through 20mm mineral fibre or5mm (min) foamed polyethylene resilient strip


Avoid joints in outer layer at edge of column

Continuous vertical ribbon of adhesive

Concrete column



Masonry outer leaf or precast panels (min 100mmthick)

External wall cavity (min 50mm) – clear, fully filledor partially filled with insulation


1600 kg/m3 or 1850 kg/m3 to 2300 kg/m3)

• internal finish - 13mm plaster or nominal 8 kg/m2

gypsum-based board

Concrete column

Frames fixed to 20mm mineral wool or 5mmfoamed polyethylene resilient strip

Avoid joints in outer layer at edge of column

Continuous vertical ribbon of adhesive


Close cavity with a flexible cavity stop unless it is fully filled with mineral wool insulation orexpanded polystyrene beads

Plan

Plan

Note: Masonry inner leaf is only permitted provided junctionwith the separating wall occurs at position of concrete column

Flexible oracoustic sealant

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3. External (flanking) wall junction – steel or timber frame inner leaf (not at concrete column position) – option 1

600m

m(m

in)

600m

m(m

in)

Plan





Inner leaf - two layers of gypsum-based boardnominal 8 kg/m2 each layer and 50mm (min)mineral wool, 10 kg/m3 (min), placed betweenstuds for first 600mm

4. External (flanking) wall junction – steel or timber frame inner leaf (not at concrete column position) – option 2

Plan

Flexible cavity stop

Gypsum-based board nominal 10 kg/m2



Inner leaf - one layer of gypsum-based boardnominal 10 kg/m2 and 50mm (min) mineralwool, 10 kg/m3 (min), placed between studs

E-WS-2-Apr2007 29/8/08 15:21 Page 3



5. Separating wall to separating wall junction


Fully fill void with mineral wool quilt or batt(min 10 kg/m3)

Internal fixing angle

Plan

5.1

5.2

5.3

50mm (min) between stud and masonry

Masonry leaf (min 100mm thick)


Fully fill void with mineral wool quilt or batt (min 10 kg/m3)


190mm (min)


Fully fill void with mineral wool quilt or batt(min 10 kg/m3)


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Plan

6. Separating floor junction – in-situ concrete floor E-FC-2



Section

Sketch shows 250mm concrete slab, FFT1 typefloating floor treatment and metal ceiling treatment

Steel angle to suspend quilt

20mm mineral fibre or 5mm foamedpolyethylene resilient strip

Steel angle to seal void


Gyproc Core board

Junction to allow for deflection of slab whererequired


E-WS-2-Apr2007 29/8/08 15:21 Page 5



8. Ground floor junction

9. Roof junction



In-situ concrete, minimum mass per unit area365 kg/m2

In-situ concrete, minimum mass per unit area365 kg/m2

Steel angle to suspend quilt

Steel angle to seal void



Gyproc Core board



Section

Section





Polyethylene

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10. Sockets in the separating wall

Plan

Plan

10.1 electrical sockets, switches etc



Fire resistant seal where required by Part B ofthe Building Regulations

Service void on surface of separating wall. This is the preferred method where more than one socket, switch, etc. are close together, e.g. in a kitchen.


E-WS-2-Apr2007 29/8/08 15:21 Page 7




Company:

Site:


Ref. Item


2. Is absorbent material 100mm (min) Isover mineral wool quilt (min density 10 kg/m3)?

3. Is quilt compressed between studs?

4. Is separating wall lining two layers of 15mm Gyproc SoundBloc plasterboard on both sides?



7. Are sockets installed in accordance with sketches 10.1?





Contact details for technical assistance from British Gypsum, manufacturer of Gypwall QUIET IWL steel frames:



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Separating Wall – Modular Build Steel Frame

Edition 3April 2007

E-WS-3Modular build twin metal frames ■

Only for use in lightweight steel frame modular houses and flats/apartments ■

Wall lining - 2 layers of gypsum-basedboard, total mass per unitarea 32 kg/m2 (min) for72mm studs, both sides, or

- total mass per unit area 24 kg/m2 (min) for minimum100mm studs, both sides


Metal frame Metal frame ‘C’ or ‘I’ studsminimum 72mm

Sheathing Minimum mass per unit areaboard 7.5 kg/m2 with 40mm (min)

cavity between boards

Absorbent 75mm (min) mineral wool material batts 45 kg/m3


Note: When using this robust detail inflats/apartments please refer to Tables 3 and4 of the Introduction. In relation to separatingfloors the inner leaf of external (flanking)walls may require further treatments – seekspecialist advice

DO

■ Keep wall sheathing boards at least40mm apart

■ Ensure that batts cover the whole wallarea and are fitted together tightly


■ Make sure there is no connectionbetween the two leaves

■ Stagger joints in wall linings to avoid airpaths



E-WS-3-Apr2007 29/8/08 15:23 Page 1


Separating Wall – Modular Build Steel Frame E-WS-3

typically studs at 600mm centres

2. External wall junction – with stagger

1. External wall junction – no stagger

typically studs at600mm centres


External cavity wall (min 50mm)



External cavity wall (min 50mm)


Plan

Plan


Close cavity with flexible cavity stops

Note: it is permissible to use sheathing board onthe cavity side of the inner leaf of the external wall


Close cavity with flexible cavity stop

Note: it is permissible to use sheathing board onthe cavity side of the inner leaf of the external wall

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Section

Intumescent seal





Plan




E-WS-3-Apr2007 29/8/08 15:23 Page 3



5. Ground floor junction


5mm gap below skirting






6. Ground floor junction – lightweight steel frame ground floor

Lightweight steel frame ground floor


Section

Section

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7. Roof junction

Section

Minimum 75mm mineral wool

Minimum 75mm mineral wool

Ceiling support beams

Plan

8. Sockets in the separating wall

Sockets with intumescent pads/linings maybe mounted in each leaf back to back

E-WS-3-Apr2007 29/8/08 15:23 Page 5




Company:

Site:


Ref. Item

1. Are wall leaves at least 40mm apart?

2. Are the metal frames a minimum of 72mm or greater?

3. Is the mineral wool placed in the cavities of both leaves?








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E-WS-4Twin metal frames (min. 250mm between linings) ■

For use in lightweight steel frame houses and flats/apartments ■

Wall lining - 2 or more layers of gypsum-based board (minimum totalnominal mass per unit area22 kg/m2) both sides


Wall frame 75mm (min) ‘C’ shape studsboth sides

Wall width 250mm (min) between innerfaces of wall linings.

Absorbent One layer 80mm (min)material unfaced mineral wool batts

(density 33-60 kg/m3)

External See Sections 1 and 2(flanking) wall

DO■ Keep wall linings at least 250mm apart

■ Ensure the batts cover whole wall areaand are fitted together correctly between75mm twin frames

■ Make sure batts are not tightlycompressed by the twin frames


■ Make sure there is no connectionbetween the two leaves except whereties are necessary for structural reasons




Notes:

This robust detail is only suitable for use inlightweight steel frame houses andflats/apartments. When using this robustdetail in flats/apartments please refer toTables 3c and 5 of the Introduction.

E-WS-4-May2008.qxd 29/8/08 15:25 Page 1



1. External (flanking) wall junction – masonry outer leaf

250m

m(m

in)



55mm (min) rigid insulation board

Fill the void between between studs withmineral wool batt, 33-60 kg/m3, for 600mm(min) from separating wall

Inner leaf:

• Attached houses – one layer of gypsum-based board nominal 10 kg/m2

• Flats/apartments – two layers of gypsum-based board nominal 20kg/m2 combined

80mm (min) unfaced mineral wool batts (density33-60 kg/m3) suspended between the twin frames



Plan

2. External (flanking) wall junction – timber cladding outer leaf

250m

m(m

in)

8mm (min) weatherboarding

25x50 timber counterbattens


Fill the void between studs with mineral woolbatt, 33-60 kg/m3, for 600mm (min) fromseparating wall

50x50mm timber battens

Inner leaf:

• Attached houses – one layer of gypsum-based board nominal 10 kg/m2

• Flats/apartments – two layers of gypsum-based board nominal 20kg/m2 (min) combined

80mm (min) unfaced mineral wool batts (density33-60 kg/m3) suspended between the twin frames


Close cavity with a flexible cavity stopPlan

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E-WS-4







Close spaces between floor joists where joistsare at right angles to wall


Fill the void between between studs withmineral wool batts, 33-60kg/m3, for 600mm (min) below floor decking level

Section

Mineral wool insulation batts, 33-60kg/m3,between studs to 600mm (min) above bottom railof steel frame

5mm (min) flanking strips installed at perimeterand turned beneath skirting board

Flexible acoustic sealant below wall lining

Separating floor:

• if using robust detail for floor, refer to Table 3c inIntroduction and see robust detail for separatingfloor for floating floor and ceiling options


Floors should not be continuous between dwellings

Fixing angle


Mineral wool insulation batts, 33-60kg/m3, betweenstuds to 600mm (min) below decking level

Section

E-WS-4-May2008.qxd 29/8/08 15:25 Page 3



6. Ground floor junction: beam and block, precast concrete plank, cast-in situconcrete suspended slab or ground bearing slab








Note: DPM (if flexible) may be continuousbetween dwellingsSection




Other junction details are acceptable providedall joints are sealed with tape or caulked withsealant

First layer to be continuous and second layer tostop either side of internal wall

Plan

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E-WS-4

7. Raft foundation

Section



A floating floor treatment must be used (forground floor floating floor treatments mineralfibre quilt is not required between the battensor cradle system)



Junction between separating wall and rooffilled with flexible closer.







Section





Polyethylene

E-WS-4-May2008.qxd 29/8/08 15:25 Page 5




80mm mineral wool insulation batts to cavity

25mm galvanised steel angle screw fixed to frameon site

2 layers nominal mass per unit area 22 kg/m2 toenclose electrical boxes

Intumescent seal

Stagger sockets and switches on each side ofparty wall

Plan

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Company:

Site:


Ref. Item


2. Is the absorbent material unfaced mineral wool batts of appropriate density and thickness?

3. Are batts fitted together tightly ?




7. Are services installed in accordance with section 9?






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Separating floors

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Separating Floor – Concrete

Edition 3April 2007

E-FC-1Precast concrete plank ■

Screed ■

Floating floor See section 4 for suitablefloating floor treatment

Screed - 40mm (min) screeddirectly applied to plank

- cement:sand orproprietary screed nominal 80 kg/m2 mass per unit area, seeAppendix A

Structural floor - 150mm (min) precastconcrete floor plank

- 300 kg/m2 (min) mass per unit area

Ceiling See section 3 for suitableceiling treatment

DO

■ Butt planks tightly together

■ Grout all joints between planks

■ Fill all voids between walls and floor

■ Ensure floating floor treatment is suitableand install in accordance with themanufacturer’s instructions

■ Install flanking strips around theperimeter of the flooring board to isolatefloor from walls and skirtings

■ Make sure ceiling treatment is installed in accordance with the manufacturer’sinstructions (where applicable)

■ Ensure that only the correct blocks areused in the construction of external(flanking) walls, unless specificallyreferred to in the Handbook all blocksshould be assumed to be solid (i.e. nothollow or cellular)


Sketch shows FFT5 type floating floortreatment and CT1 type ceiling treatment

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Separating Floor – Concrete E-FC-1


Sketch shows FFT5 type floating floortreatment and CT1 type ceiling treatment

2. Separating wall junction

Separating wall:• if using robust detail for wall - refer to Table 3a

in introduction to select an appropriate robustdetail separating wall

• if using wall requiring pre-completion testing – seek specialist advice


Concrete planks to be built into wall:• wall must not be continuous between storeys • planks must not abut separating wall • all voids between planks and blockwork filled

with mortar or flexible sealant


Masonry outer leaf


Inner leaf (min 100mm) concrete block (1350 kg/m3 to 1600 kg/m3 or 1850 - 2300 kg/m3)

Nominal 8 kg/m2 gypsum-based board or 13mm plaster


Close cavity with a flexible cavity stop unlessit is fully filled with built in mineral woolinsulation

Concrete planks to be built into wall:• wall must not be continuous between storeys • planks must not abut inner leaf • all voids between planks and blockwork filled



Sketch shows FFT5 type floating floor treatmentand CT1 type ceiling treatment

Section

Section

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Edition 3April 2007

E-FC-1

3. Ceiling treatments for E-FC-1

All ceiling treatments must be installed inaccordance with the manufacturer’s instructions.All ceiling joints must be sealed with tape orcaulked with sealant.

The maximum load on resilient bars shall notexceed that specified in the manufacturer’sinstructions.

Note: the sound insulation performance of allceiling treatments is increased if:

• 25mm (min) mineral wool quilt is placed in theceiling void, and/or

• resilient hangers are used.

CT1 – Metal ceiling system - 100mm void• any metal ceiling system providing 100mm

(min) ceiling void • one layer of nominal 8 kg/m2 gypsum-based

board

CT2 – Timber battens and counterbattens• 50 x 50mm softwood battens• 50 x 50mm counterbattens• one layer of 8 kg/m2 gypsum-based board

CT3 – Metal ceiling system - 75mm void• any metal ceiling system providing 75mm

(min) ceiling void• one layer of nominal 10 kg/m2 gypsum-based

board

CT4 – Timber battens and metal resilient barsOnly suitable for use in conjunction with 200mm (min) precast concrete floor plank of mass per unit area 300 kg/m2 (min).

• 50 x 50mm softwood battens• metal resilient ceiling bars mounted at right

angles to the battens (bars must achieve aminimum laboratory performance ofrd∆Rw+Ctr=17dB and rd∆Lw=16dB) - seeAppendix E

• one layer of minimum nominal 10 kg/m2

gypsum-based board

Downlighters and recessed lightingProvided there is a minimum ceiling void of 75mmdownlighters or recessed lighting may be installed in the ceiling:• in accordance with the manufacturer’s

instructions• at no more than one light per 2m2 of ceiling area

in each room or see Appendix F• at centres not less than 0.75m• into openings not exceeding 100mm diameter or

100x100mmParticular attention should also be paid to BuildingRegulations Part B - Fire Safety

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4. Floating floor treatments for E-FC-1

All floating floor treatments :

a) Must achieve a minimum laboratory performanceof rd∆Lw=17dB - see Appendix D.

b) Must be installed in accordance with themanufacturer’s instructions.

c) Require 5mm (min) resilient flanking stripsaround the perimeter of the flooring board toisolate floor from walls and skirting.

FFT 1 – Resilient composite deep battensystem

• 18mm (min) t&g flooring board• resilient layer must be continuous and pre-

bonded to batten• resilient composite deep battens• ensure any services do not bridge the

resilient layer• battens may have the resilient layer at the

top or the bottom

d) For further guidance on floating floor treatmentsand flanking strips, please refer to Appendix A.

* Note - void dimensions indicated are when flooris loaded to 25 kg/m2.

FFT 2 – Resilient cradle and batten system• 18mm (min) t&g flooring board• cradle and batten• ensure any services do not bridge the

resilient layer

FFT 3 – Resilient composite standard batten system


bonded to batten• resilient composite standard battens• ensure any services do not bridge the


top or the bottom

FFT 4 – Resilient overlay platform floorsystem

• proprietary platform system inclusive ofresilient layer greater than or equal to 16 kg/m2 mass per unit area

• no services to be installed in floor system

FFT 5 – Resilient overlay shallow platformfloor system

• 9mm (min) t&g flooring board• resilient layer pre-bonded to flooring board• no services to be installed in floor system

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Edition 3April 2007

E-FC-1

5. Services – Service pipes through separating floor

Section

25mm (min) mineral wool quilt (min 10 kg/m3)around pipe

Pipe boxed in with two layers gypsum-basedboard, each layer nominal 8 kg/m2

All voids around pipe sealed

Sketch shows FFT5 type floating floor treatment andCT3 type ceiling treatment

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CHECKLIST (to be completed by site manager /supervisor)

Company:

Site:


Ref. Item

1. Are precast concrete planks 150mm (min) thick and of mass per unit area 300 kg/m2 (min)?

2. Are inner leaves to external (flanking) walls of the correct block density?

3. Are joints between precast concrete planks grouted?

4. Are precast concrete planks built into the masonry walls?

5. Is screed applied directly to the planks?

6. Has ceiling system been installed in accordance with themanufacturer’s instructions (where applicable)?

7. Are all ceiling board joints sealed with tape or caulked with sealant?

8. Has floating floor treatment been installed in accordance with the manufacturer’s instructions?

9. Have all resilient flanking strips been fitted?

10. Are service pipes wrapped in quilt and boxed in with two layersof nominal 8 kg/m2 gypsum-based board?

11. Is separating floor satisfactorily complete?




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Edition 3April 2007

E-FC-2In-situ concrete slab ■

Use with reinforced concrete ■frame construction only

Floating floor See section 5 for suitable floating floor treatment

Structural floor • 250mm (min) in-situ concrete floor slab, 2400 kg/m3 (min) density without screed, or• 200mm (min) in-situ concrete floor slab, 2400 kg/m3 (min) density, with screed:- 40mm (min) screed directly applied to slab- cement:sand or proprietary screed nominal80 kg/m2 mass per unit area, See Appendix A

Ceiling See section 4 for suitable ceiling treatment

DO

■ Ensure floor slab density is 2400kg/m3 (min)




■ Make sure there is a ceiling void of 75mm(min) and ceiling treatment is installed inaccordance with the manufacturer’sinstructions (where applicable)

■ Ensure that, where used, only solidblocks (i.e. not hollow or cellular) areused in the construction of external(flanking) walls


Sketch shows FFT2 type floating floortreatment and metal ceiling treatment


Storey height glazing units are anacceptable alternative to the cavity wallsillustrated:• glazing units should not be continuous

between storeys• mullion or transom supports/framing

should not be continuous betweendwellings

• Refer to Appendix A

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1. External (flanking) wall junction - steel or timber frame inner leaf


2. External (flanking) wall junction - masonry inner leaf

Outer leaf may be:• masonry, or• precast panels


Inner leaf (min 100mm) concrete block (1350 to1600 kg/m3 or 1850 to 2300 kg/m3)



Gypsum-based board nominal 8 kg/m2 or 13mmplaster

Close cavity with a flexible cavity stop unless it is fully filled with mineral wool insulation orexpanded polystyrene beads

Slab must not abut inner leaf

All voids between slab and inner leaf filled withflexible closer or sealant

Inner leaf must not be continuous between storeys






2 layers of gypsum-based board nominal 8 kg/m2

each layer

Acoustic or flexible sealant





Note: If using E-FC-2 in combination with robustdetail E-WS-2 separating wall, please refer to E-WS-2 when using lightweight steel frame innerleaf


Section

Section

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E-FC-2







Gyproc Core board


Wall frames fixed to timber sole plates

Screed must not be continuous between dwellings

Screed should not come into contact with steelchannel or wall lining

20mm mineral fibre or 5mm foamed polyethyleneresilient strip


Gyproc Core board


Sketch shows 250mm concrete slab,FFT2 type floating floor treatmentand metal ceiling treatment

Section

Sketch shows 200mm concrete slab withscreed, FFT2 type floating floor treatmentand metal ceiling treatment

Section

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4. Ceiling treatment for E-FC-2

Any ceiling system - 75mm void• any timber or metal ceiling system providing

75mm (min) ceiling void• one layer of nominal 10 kg/m2 gypsum-based

board

Ceiling treatment must be installed in accordancewith the manufacturer’s instructions

All ceiling joints must be sealed with tape orcaulked with sealant

The maximum load on resilient bars shall notexceed that specified in the manufacturer’sinstructions

Note: the sound insulation performance of ceilingtreatment is increased if:


• resilient hangers are used





75mm min

Any ceiling system - 100mm void• any timber or metal ceiling system providing

100mm (min) ceiling void• one layer of nominal 8 kg/m2 gypsum-based

board

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E-FC-2










top or the bottom




resilient layer





top or the bottom





• 9mm (min) t&g flooring board• resilient layer pre-bonded to flooring board• no services to be installed in floor system

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Section


Pipe boxed in with two layers gypsum-basedboard, nominal 8 kg/m2 each layer


Sketch shows FFT2 type floating floor treatment and metal ceiling treatment

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Ref. Item

1. Is concrete slab density 2400 kg/m3 (min)?

2. Where blockwork inner leaves are adopted to the external(flanking) walls are they of the correct density?

3. Is concrete slab 250mm (min) thick without screed, or 200mm(min) thick where a 40mm (min) screed covers the in-situconcrete slab?

4. Is inner leaf discontinuous between storeys?


6. Is there a minimum ceiling void of 75mm?


8. Has floating floor treatment been installed in accordance withthe manufacturer’s instructions?


10. Are service pipes wrapped in quilt and boxed in with twolayers of gypsum-based board, nominal 8 kg/m2 each layer?





Company:

Site:




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Edition 3April 2007

E-FC-3

Performance and monitoring results of E-FC-3 have shown that, where builtstrictly in accordance with the published Robust Detail, the floors meet RDL’sperformance criteria.

Unfortunately, the results also revealed that an unacceptably high proportionof floors deviated from the Robust Detail, which led to reduced acousticperformance to the extent that they failed under test.

Accordingly, RDL has determined that no new registrations for RobustDetail E-FC-3 will be accepted with effect from 1st November 2006.

The E-FC-3 robust detail has therefore been removed from the Handbook.

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Screed laid on Thermal Economics IsoRubber resilient layer ■

Screed 65mm (min) cement:sandscreed or 40mm (min)proprietary screed ofnominal 80 kg/m2 massper unit area

Resilient layer 6mm IsoRubber layer withIsoEdge flanking strip

Structural floor - 150mm (min) precastconcrete floor plank- 300 kg/m2 (min) mass

per unit area

Ceiling See section 3 for suitableceiling treatment which isdependent on floor plankdepth and supporting walldensity

DO■ Butt planks tightly together



■ Ensure 6mm IsoRubber resilient layer islaid over the entire floor surface and hasoverlapped joints of 50mm sealed withtape. On no account should the screedcome into contact with the floor slab. (seeSection 4 for 40mm proprietary screeds)

■ Ensure 6mm IsoRubber overlaps withIsoEdge flanking strip. On no accountshould screed come into contact withfloor slab or perimeter walls

■ Ensure the IsoEdge flanking strip isolatesthe skirting and wall linings. On noaccount should screed come into contactwith the wall lining and skirting



Sketch shows CT0 type ceiling treatment

SYSTEM INSTALLATION

The use of this screed resilient layersystem must incorporate the following:

1) 6mm IsoRubber (resilient layer to belaid over entire floor area with minimum50mm overlaps)

2) IsoEdge flanking strip

3) All joints taped

IsoEdge Flanking Strip

All jointstaped

Min. 50mm overlap

■ IsoEdge flanking strip to be installed atall room perimeters. See manufacturer’sguidance.

■ See Section 4 for acceptable installationalternatives for 40mm proprietary screeds

From 1 January 2009, RDL can only accept registrationof this floor once the builder agrees to receive trainingfrom Thermal Economics on the installation of thescreed and resilient layer. Please contact Robust Details for further information.

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IsoEdge flanking strip

IsoRubber resilient layer to overlap IsoEdgeflanking strip



Continuous horizontal ribbon of adhesive orIsoEdge ceiling strip

Masonry outer leaf


Inner leaf (min 100mm) aggregate concreteblock (1350 kg/m3 to 1600 kg/m3 or 1850 -2300 kg/m3) or aircrete block (450-800 kg/m3)

IsoEdge flanking strip must overlap withIsoRubber resilient layer and isolate screedfrom perimeter walls and skirtings

IsoRubber resilient layer must have 50mm (min)overlapped joints and be sealed with tape


Concrete planks must be built into walls:• walls must not be continuous between storeys• planks must not abut inner leaf • all voids between planks and blockwork filledwith mortar or flexible sealant




Section

Section

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E-FC-4




• 25mm (min.) mineral fibre quilt is placed in theceiling void, and/or


CT0 – Metal ceiling system - 150mm voidTo be used for 150mm (min) depth concreteplanks• any metal ceiling system providing 150mm


board

CT1 – Metal ceiling system - 100mm voidOnly to be used for 200mm (min) depthconcrete planks• any metal ceiling system providing 100mm


board

CT2 – Timber battens and counterbattenswith IsoSonic Hangers Type C. Only to beused for 200mm (min) depth concrete planks• 50 x 50mm softwood battens• 50x50mm counterbattens• Isosonic Hangers Type C• one layer of nominal 8 kg/m2 gypsum-based

board

Downlighters and recessed lightingProvided there is a minimum ceiling void as statedbelow for CT0, CT1 or CT2, downlighters orrecessed lighting may be installed in the ceiling:• in accordance with the manufacturer’s




E-FC-4-Apr2007 29/8/08 15:34 Page 3



4. Resilient layer installation for different screed types

Tapedjoint

65mm (min)cement:sandscreed

50mm 40mm (min)proprietary screed

Taped joint

Polythene layer

SCREED TYPE65mm (min) cement:sand screed

• IsoRubber joints to be overlapped by50mm (min)

• Upper IsoRubber edge joints to besealed by tape

SCREED TYPE40mm (min) proprietary screed

• IsoRubber joints to be butt jointed

• IsoRubber joints to be sealed bytape

• Polythene layer to be laid overwhole floor overlapping joints

5. Underfloor heating systems within screeds

Underfloor heating systems (including connectorsand fixings) installed within the screed must notpenetrate the resilient layer or bridge the screed tothe slab.

Underfloor heating systems which have asupporting layer/board may be laid on top of theIsoRubber.

Appropriate screed depth cover to the heatingsystem must be designed for – contact underfloorheating manufacturer for guidance.

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E-FC-4


Section





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Company:

Site:


Ref. Item

1. Has training been received from Thermal Economics?



4. Are joints between precast concrete planks grouted and sealed?


6. Is the IsoEdge flanking strip installed for all room perimeters?

7. Are the IsoRubber joints overlapped by 50mm and sealed with tape?

8. Is the IsoRubber layer overlapping the IsoEdge flanking strip?

9. Are the skirting boards isolated from the screed by the IsoEdgeflanking strip?

10. Are all ceiling board joints sealed with tape or caulked withsealant?






Contact details for technical assistance from Thermal Economics, manufacturer of IsoRubber resilient layer system:


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E-FC-5




Screed laid on Cellecta® YELOfon® HD10+ resilient layer system ■

Screed 65mm (min) cement:sandor 40mm (min) proprietaryscreed of nominal 80 kg/m2

mass per unit area

Resilient layer YELOfon® HD10+ with E-strip perimeter edgingand J-strip tape for jointing



Ceiling See section 3 for suitableceiling treatment which isdependent on floor plankdepth and block type usedin supporting walls




■ Ensure YELOfon® HD10+ resilient layer islaid over the entire floor surface and hasoverlapped joints of 150mm sealed with J-strip tape. On no account should thescreed come into contact with the floorslab (See section 4 when using proprietaryscreeds)

■ Ensure YELOfon® HD10+ overlaps the E-strip perimeter edging and joints aresealed with J-strip tape. On no accountshould screed come into contact withfloor slab or perimeter walls

■ Ensure the E-strip perimeter edgingisolates the skirting and wall linings. On no account should screed come intocontact with the wall lining and skirting

■ Ensure that only the correct blocks are usedin the construction of external (flanking)walls, unless specifically referred to in theHandbook all blocks should be assumed tobe solid (i.e. not hollow or cellular)



SYSTEM INSTALLATION:The use of this screed resilient layer systemmust incorporate all three products:1) YELOfon® HD10+ (resilient layer to belaid over entire floor area with min.150mm overlaps)

2) E-strip (self adhesive perimeter edging)

3) J-strip (foamed acoustic joining tape)

YELOfon® HD10+ E-stripperimeteredging

J-strip tape

Floor slab

Min. 150mmoverlap

■ E-strip perimeter edging to be installedat all room perimeters. See manufacturer’s guidance.

■ YELOfon® HD10+ may also be foil faced.


RDL can only accept registration of this floor once thebuilder agrees to receive training from Cellecta® on theinstallation of the screed and resilient layer.Please contact Robust Details for further information.

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Separating wall:• if using robust detail for wall - refer to Table 3ain introduction to select an appropriate robustdetail separating wall


NOTE: aircrete block separating wall requires200mm (min) planks and ceiling treatment CT5(Refer to section 3)

E-strip perimeter edging must be overlapped byYELOfon® HD10+ resilient layer with jointssealed with J-strip tape to isolate screed fromperimeter walls and skirtings

YELOfon® HD10+ resilient layer must have150mm (min) overlapped joints and be sealedwith J-strip tape

Concrete planks to be built into wall:• wall must not be continuous between storeys • planks must not abut separating wall • all voids between planks and blockwork filledwith mortar or flexible sealant


Masonry outer leaf


Inner leaf (min 100mm) aggregate concrete block(1350-1600 kg/m3 or 1850-2300 kg/m3) or aircreteblock (450-800kg/m3).

E-strip perimeter edging must be overlapped byYELOfon® HD10+ resilient layer with joints sealedwith J-strip tape to isolate screed from perimeterwalls and skirtings

YELOfon® HD10+ resilient layer must have 150mm(min) overlapped joints and be sealed with J-strip tape






Section

Section

J-strip tape

J-striptape


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E-FC-5






CT0 – Metal ceiling system - 150mm voidTo be used for 150mm (min) depth concreteplanks• any metal ceiling system providing 150mm(min) ceiling void

• one layer of nominal 8 kg/m2 gypsum-basedboard

CT1 – Metal ceiling system - 100mm voidOnly to be used for 200mm (min) depthconcrete planks• any metal ceiling system providing 100mm(min) ceiling void


Downlighters and recessed lightingProvided there is a minimum ceiling void as statedbelow for CT0, CT1 or CT5, downlighters orrecessed lighting may be installed in the ceiling:• in accordance with the manufacturer’sinstructions

• at no more than one light per 2m2 of ceiling areain each room or see Appendix F

• at centres not less than 0.75m• into openings not exceeding 100mm diameter or100x100mm

Particular attention should also be paid to BuildingRegulations Part B - Fire Safety

CT0 and CT1 ceiling treatments can only be usedwhen separating walls are constructed inaggregate blocks.

CT5 ceiling treatment MUST be used when flankingAND separating walls are constructed in aircreteblocks.

This can also be used with concrete aggregatewalls if required.







J-strip tape65mm (min)cement:sandscreed min. 150mm

overlap


• YELOfon® HD10+ resilient layer must have150mm (min) overlapped joints and be sealedwith J-strip tape.

• E-strip perimeter edging must be overlapped byYELOfon® HD10+ resilient layer with jointssealed with J-strip tape to isolate screed fromperimeter walls and skirtings.

• E-strip perimeter edging to be installed at allperimeter walls (including door openings, wallrecesses) and service pipes. See manufacturer’sguidance.

5. Underfloor heating systems within screed

Underfloor heating systems (including connectorsand fixings) installed within the screed must notpenetrate the resilient layer or bridge the screed to the slab.

Underfloor heating systems which have asupporting layer/board may be laid on top of theYELOfon® HD10+.

YELOfon® HD10+ may also be foil faced.


YELOfon® HD10+

Floor slab


• YELOfon® HD10+ resilient layer to be buttjointed.

• YELOfon® HD10+ joints to be sealed with J-strip tape.

• Polythene layer to be laid over whole floor,with joints overlapped.

Floor slab

40mm (min)proprietaryscreed Polythene layer

J-strip tape

YELOfon® HD10+


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E-FC-5


Section



J-strip tape








Company:

Site:


Ref. Item

1. Has training been received from Cellecta®?


3. Are inner leaves to external (flanking) walls of the correct block density and appropriate for precast concrete plankthickness and ceiling treatment?



6. Is the E-strip perimeter edging installed around all roomperimeter walls (including door openings, cupboards, acrossthresholds and into wall recesses) and service pipes and jointssealed with J-strip tape?

7. Are YELOfon® HD10+ resilient layer joints formed asdescribed in Section 4 and sealed with J-strip tape?

8. Is YELOfon® HD10+ resilient layer overlapping the E-stripperimeter edging and joints sealed with J-strip tape?

9. Are the skirting boards isolated from the screed by the E-stripperimeter edging?

10. Is appropriate ceiling treatment used to suit wall block type?






Contact details for technical assistance from Cellecta®, manufacturer of YELOfon® HD10+ resilient layer system:




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Edition 3April 2007

E-FC-6Beam and block floor with precast or in-situ edge beams ■

Screed laid on Regupol E48 resilient layer system ■For use with dense aggregate block flanking walls only ■

Screed 65mm (min) cement:sandscreed or 40mm (min)proprietary screed, nominal80 kg/m2 mass per unit area

DPM 0.2mm (min) waterproof membrane

Resilient layer 8mm Regupol E48, dimpleside down, fully lapped upwalls and Regupol tape forjointing

Structural floor beam and block, min100mm thick denseaggregate infill blocks, min50mm concrete topping,min strength class C20, tofloor blocks, min 300kg/m2

combined mass per unit area– see section 7 for cut rows

Ceiling Min 300mm from top ofbeam to ceiling board – see section 8

DO■ Butt floor blocks tightly together■ Cover floor blocks with min 50mm

concrete topping■ Ensure that concrete does not enter the

cavity and bridge the two leaves ofsupporting wall blockwork - it isacceptable to use proprietary cavitystops to provide a shutter

■ Ensure precast or in-situ edge beams arecorrectly installed

■ Ensure in-situ concrete downstand is atleast 75mm wide

■ Ensure Regupol E48 is laid dimple sidedown, covers entire floor area and hasoverlapped joints sealed with Regupol tape

■ Ensure Regupol E48 resilient layerisolates screed from the perimeter walls,wall linings and skirtings

■ Ensure depth from top of beams toceiling is min 300mm

■ Ensure 50mm mineral fibre quilt isinstalled over whole ceiling board areas

■ Ensure that only solid blocks (i.e. nothollow or cellular) are used in theconstruction of external (flanking) walls

SYSTEM INSTALLATION


1) 8mm Regupol E48 (resilient layer to belaid over entire floor area with 50mmoverlaps)

2) All joints sealed with Regupol tape

3) 0.2mm (min) waterproof membrane

RegupolTape

Regupol E48 lapped underwall linings and skirtings

0.2mm (min)waterproofmembrane

Min. 50mm overlap

■ Regupol E48 must be laid dimpled sidedown

■ Regupol E48 must be turned up at wallsand lapped under wall linings and skirtings

■ Lay a 0.2mm (min) waterproofmembrane over the entire floor

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1. External (flanking) wall junction – beams parallel with wall (using precast edge beams)

Masonry outer leaf


Inner leaf (min 100mm) dense aggregate concreteblock (1850-2300kg/m3)

8mm Regupol E48 must isolate screed from allperimeter masonry walls, wall linings and skirting

8mm Regupol E48 must have 50mm (min)overlapped joints and be sealed with Regupol tape

Beam and block floor:• min 50mm concrete topping to all floor blocks• walls must not be continuous between storeys• floor blocks to be tightly abutted (see section 7

for floor block types)• precast concrete edge beam min 300mm wide

must break vertical continuity of wall leaves (NB: edge beam shape may vary betweenmanufacturers)

• all voids between edge beam and inner leafblockwork filled with mortar or flexible sealant



Nominal 8kg/m2 gypsum-based board or 13mmplasterSection

Screed

2. External (flanking) wall junction – beams parallel with wall (using in-situ concrete downstand)

Masonry outer leaf





Beam and block floor:

• min 50mm concrete topping to all floor blocks

• walls must not be continuous between storeys

• floor blocks to be tightly abutted (see section 7for floor block types)

• in-situ concrete downstand must be min 75mmwide and must break vertical continuity of wallleaves




Screed

E-FC-6-Apr2007 29/8/08 15:39 Page 2



Edition 3April 2007

E-FC-6


Separating wall:

• if using robust detail for wall – refer to Table 3ain introduction to select an appropriate robustdetail separating wall

• if using wall requiring pre-completion testing –seek specialist advice

Core floor junctions with wall:

• floor blocks to be tightly abutted

• if beams are bearing on wall (i.e. perpendicularto wall) an in-situ concrete downstand of min75mm width must be used


• if beams are parallel to separating wall min300mm wide precast concrete edge beam ormin 75mm wide in-situ concrete downstandmust break vertical continuity of wall leaves


• all voids between precast edge beam andseparating wall blockwork filled with mortar orflexible sealant


3. External (flanking) wall junction – beams bearing on wall

Masonry outer leaf







• in-situ downstand beam must be min 75mm wideand must break vertical continuity of wall leaves



• junction between floor blocks and wall must beclosed (see section 7)




Screed

Sketch shows E-WM-3 separating wall

E-FC-6-Apr2007 29/8/08 15:39 Page 3



5. Loadbearing internal wall – floor beams parallel to wall

6. Loadbearing internal wall – floor beams bearing onto wall

8mm Regupol E48 must isolate screed fromall perimeter masonry walls, wall linings andskirting

8mm Regupol E48 must have 50mm (min)overlapped joints and be sealed with Regupoltape

Beam and block floor:• min 50mm concrete topping to all floor blocks• in-situ downstand must be min 50mm wide

and must break vertical continuity of wall• walls must not be continuous between

storeys• floor blocks must be tightly abutted (see

section 7 for floor block types)• Internal loadbearing blockwork partition

8mm Regupol E48 must isolate screed fromall perimeter masonry walls, wall linings andskirting

8mm Regupol E48 must have 50mm (min)overlapped joints and be sealed with Regupoltape


and must break vertical continuity of wall• walls must not be continuous between

storeys• floor blocks must be tightly abutted (see

section 7 for floor block types)• Internal loadbearing blockwork partition

E-FC-6-Apr2007 29/8/08 15:39 Page 4



Edition 3April 2007

E-FC-6

7. Floor block types

Block types

Rebated or ‘T’ shape dense blocks may beused for beams of 150mm depth or greater.

Rebated or ‘T’ shape dense blocks may berecessed for beams of 175mm or greater.

100mm dense blocks may be used for beamsof 200mm depth or greater.

Cut rows

No more than one cut row of floor blocks maybe used per room floor with minimum 25mmconcrete topping.

Where a cut row junctions with perimeter wallsensure that no gap is left and that a cut blockor brick slip is used to seal this junction priorto applying concrete topping.

Wall head and floor block junctions

No gaps should remain where the last floorblock junctions at the wall head.

Where the floor block does not close this gap,brick slips or cut blocks may be used.

(min)150mmdepthbeams



(min)50mm

Cut row

(min) 25mm concretetopping covering cut row

Wall head junction closed


Brick slip or cut block

(min) 75mm width of in-situconcrete downstand

E-FC-6-Apr2007 29/8/08 15:39 Page 5




9. Resilient layer installation


The minimum depth between top of beams andceiling board must not be less than 300mm.



• increased thickness or density of mineral fibrequilt is used. (Do not fully fill the ceiling voidwith quilt.)

Downlighters and recessed lighting

Downlighters or recessed lighting may beinstalled in the ceiling:

• in accordance with the manufacturer’sinstructions

• at no more than one light per 2m2 of ceilingarea in each room or see Appendix F

• at centres not less than 0.75m

• into openings not exceeding 100mm diameteror 100x100mm

Particular attention should also be paid toBuilding Regulations Part B – Fire Safety.

SCREED TYPE

65mm (min) cement:sand screed or 40mm (min)proprietary screed, nominal 80 kg/m2 mass perunit area

• 8mm Regupol E48 must be laid dimpled sidedown

• overlap all Regupol E48 joints (both along andacross the roll) by at least 50mm and tape alljoints using Regupol tape

Floor depth requirements and ceilingtreatments

All E-FC-6 floors must have a minimum depthof 300mm between top of beam and ceilingboard

Only suspended metal frame ceilings systemsmay be used

Min 50mm mineral fibre quilt (min 10kg/m3)in the ceiling void to cover whole ceiling boardarea

One layer of nominal 10kg/m2 gypsum-basedboard

• turn up Regupol E48 at walls to ensure screedwill not touch the walls and is of sufficient lengthto lap under wall linings and skirtings

• lay a waterproof membrane (min 0.2mm thick)over the entire floor

50mm

Turn up Regupol E48 at walls andlap under wall linings and skirtings

0.2mm (min) waterproof membraneJoint taped withRegupol tape

E-FC-6-Apr2007 29/8/08 15:39 Page 6



Edition 3April 2007

E-FC-6

10. Underfloor heating

Underfloor heating systems (includingconnectors and fixings) installed within thescreed must not penetrate the resilient layer orbridge the screed to the slab.

Underfloor heating systems which have asupporting layer/board may be laid on top of theRegupol E48

Appropriate screed depth cover to the heatingsystem must be designed for – contactunderfloor heating manufacturer for guidance.

11. Services – service pipes through separating floor

25mm (min) mineral wool quilt (min 10kg/m3)around pipe

Pipe boxed in with two layers gypsum-basedboard, each layer nominal 8kg/m2


E-FC-6-Apr2007 29/8/08 15:39 Page 7



12. Service - service pipes through separating floor (using precast edge beams)



Where precast edge beams are adopted it isacceptable to use in-situ concrete local toservices


E-FC-6-Apr2007 29/8/08 15:39 Page 8



Edition 3April 2007

E-FC-6

blank page


E-FC-6-Apr2007 29/8/08 15:39 Page 9





Company:

Site:


Ref. Item

1. Are the external wall inner leaves and separating walls ofdense aggregate blockwork (min 1850-2300kg/m3)?

2. Are all floor blocks of dense aggregate (1850-2300kg/m3) andtightly abutted?

3. Are min 300mm wide precast concrete edge beams, or min75mm in-situ concrete downstands installed where the beamsare parallel to the external or separating flanking walls?

4. Are in-situ concrete downstand beams min 75mm wide wherethe beams are bearing on the external or separating flanking walls?

5. Is the concrete topping to the floor blocks at least 50mm thick?

6. Is the Regupol E48 dimple side down and covering the wholefloor area with min 50mm overlapped joints and sealed withRegupol tape?

7. Is the Regupol E48 isolating the screed from the perimeterwalls, wall linings and skirting?

8. Is the ceiling system metal frame, with min 50mm mineral fibre quilt laid over the whole ceiling and of min 300mm depth from top of beam to ceiling board?

9. Is the ceiling board 10kg/m2 and are all joints sealed with tape or caulked with sealant?

10. Are service pipes wrapped in quilt and boxed with two layersof nominal 8kg/m2 gypsum-based board?

11. Is the separating floor satisfactorily complete?



Contact details for technical assistance from CMS Acoustics, sole distributor of Regupol E48 resilient layer system:



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Edition 3April 2007

E-FC-7Beam and block floor with precast or in-situ edge beams ■

Using floating floor treatments ■For use with dense aggregate block flanking walls only ■


Structural floor beam and block, min100mm thick denseaggregate infill blocks, min50mm concrete topping,min strength class C20, tofloor blocks, min 300kg/m2

combined mass per unit area– see section 7 for cut rows

Ceiling Min 300mm from top ofbeam to ceiling board – see section 8

DO

■ Butt floor blocks tightly together

■ Cover floor blocks with min 50mmconcrete topping

■ Ensure that concrete does not enter thecavity and bridge the two leaves ofsupporting wall blockwork - it isacceptable to use proprietary cavitystops to provide a shutter

■ Ensure precast or in-situ edge beams arecorrectly installed

■ Ensure in-situ concrete downstand is atleast 75mm wide

■ Ensure levelling screed is applied beforeusing FFT1 or FFT3 (resilient batten)floating floor treatments (see section 9)

■ Ensure quilt is inserted within FFT2(cradle/saddle) floating floor treatment(see section 9)

■ Ensure floating floor treatment is suitableand install in accordance withmanufacturer's instructions


■ Ensure depth from top of beams toceiling is min 300mm

■ Ensure 25mm mineral fibre quilt isinstalled over whole ceiling board areas

■ Ensure that only solid blocks (i.e. nothollow or cellular) are used in theconstruction of external (flanking) walls

E-FC-7-Apr2007 29/8/08 15:41 Page 1



1. External (flanking) wall junction – beams parallel with wall (using precast edge beams)

Masonry outer leaf




Section shows FFT3 type floating floor over20mm (min) levelling screed (see section 9 foracceptable floating floor alternatives)

Beam and block floor:• min 50mm concrete topping to all floor blocks• walls must not be continuous between storeys• floor blocks to be tightly abutted (see section 7

for floor block types)• precast concrete edge beam min 300mm wide

must break vertical continuity of wall leaves (NB: edge beam shape may vary betweenmanufacturers)

• all voids between edge beam and inner leafblockwork filled with mortar or flexible sealant




2. External (flanking) wall junction – beams parallel with wall (using in-situ concrete downstand)

Masonry outer leaf




Section shows FFT3 type floating floor over20mm (min) levelling screed (see section 9 foracceptable floating floor alternatives)





• in-situ concrete downstand must be min 75mmwide and must break vertical continuity of wallleaves




E-FC-7-Apr2007 29/8/08 15:41 Page 2



Edition 3April 2007

E-FC-7


Separating wall:

• if using robust detail for wall – refer to Table 3ain introduction to select an appropriate robustdetail separating wall


Core floor junctions with wall:

• floor blocks to be tightly abutted

• if beams are bearing on wall (i.e. perpendicularto wall) an in-situ concrete downstand of min75mm width must be used


• if beams are parallel to separating wall min300mm wide precast concrete edge beam ormin 75mm wide in-situ concrete downstandmust break vertical continuity of wall leaves


• all voids between precast edge beam andseparating wall blockwork filled with mortar orflexible sealant


3. External (flanking) wall junction – beams bearing on wall

Masonry outer leaf




Section shows FFT3 type floating floor over 20mm(min) levelling screed (see section 9 for acceptablefloating floor alternatives)



• in-situ downstand beam must be min 75mm wideand must break vertical continuity of wall leaves



• junction between floor blocks and wall must beclosed (see section 7)




Sketch shows FFT3 type floating floor over 20mm (min) levelling screed and E-WM3 separating wall

E-FC-7-Apr2007 29/8/08 15:41 Page 3



5. Loadbearing internal wall – floor beams parallel to wall

6. Loadbearing internal wall – floor beams bearing onto wall



and must break vertical continuity of wall• floor blocks must be tightly abutted (see

section 7 for floor block types)• walls must not be continuous between

storeys• Internal loadbearing blockwork partition



and must break vertical continuity of wall• floor blocks must be tightly abutted (see

section 7 for floor block types)• walls must not be continuous between

storeys• Internal loadbearing blockwork partition

E-FC-7-Apr2007 29/8/08 15:41 Page 4



Edition 3April 2007

E-FC-7

7. Floor block types

Block types

Rebated or ‘T’ shape dense blocks may beused for beams of 150mm depth or greater.

Rebated or ‘T’ shape dense blocks may berecessed for beams of 175mm or greater.

100mm dense blocks may be used for beamsof 200mm depth or greater.




Cut rows

No more than one cut row of floor blocks maybe used per room floor with minimum 25mmconcrete topping.

Where a cut row junctions with perimeter wallsensure that no gap is left and that a cut blockor brick slip is used to seal this junction priorto applying concrete topping.

Wall head and floor block junctions

No gaps should remain where the last floorblock junctions at the wall head.

Where the floor block does not close this gap,brick slips or cut blocks may be used.

(min)50mm

Cut row

(min) 25mm concretetopping covering cut row



Brick slip or cut block

(min) 75mm width of in-situconcrete downstand

E-FC-7-Apr2007 29/8/08 15:41 Page 5





The minimum depth between top of beams andceiling board must not be less than 300mm.



• increased thickness or density of mineral fibrequilt is used. (Do not fully fill the ceiling voidwith quilt.)

Downlighters and recessed lighting

Downlighters or recessed lighting may beinstalled in the ceiling:

• in accordance with the manufacturer’sinstructions

• at no more than one light per 2m2 of ceilingarea in each room or see Appendix F

• at centres not less than 0.75m

• into openings not exceeding 100mm diameteror 100x100mm

Particular attention should also be paid toBuilding Regulations Part B – Fire Safety.

Floor depth requirements and ceilingtreatments

All E-FC-7 floors must have a minimum depthof 300mm between top of beam and ceilingboard

Only suspended metal frame ceilings systemsmay be used

Min 25mm mineral fibre quilt (min 10kg/m3)in the ceiling void to cover whole ceiling boardarea

One layer of nominal 10kg/m2 gypsum-basedboard

E-FC-7-Apr2007 29/8/08 15:41 Page 6



Edition 3April 2007

E-FC-7

10. Underfloor heating

Underfloor heating may be used with timberfloating floors FFT1, FFT2 and FFT3.

Underfloor heating must not bridge or bypassthe FFT resilient layer (i.e. avoid bridging the voidbetween the flooring board and core floor).

Rigid flooring boards must not come into directcontact with the flooring board layer.

See Appendix A for further guidance.



a) Must achieve a minimum laboratoryperformance of rd∆Lw=17dB - see Appendix D.



FFT 1 – Resilient composite deep battensystem with 20mm levelling screed




top or the bottom



FFT 2 – Resilient cradle and batten systemwith 25mm mineral fibre quilt (min10kg/m3)

• 18mm (min) t&g flooring board• cradle and batten• ensure any services do not bridge the

resilient layer

FFT 3 – Resilient composite standard battensystem with 20mm levelling screed




top or the bottom

Services, where required, maybe located above or below quilt

20mm levelling screed

20mm levelling screed

E-FC-7-Apr2007 29/8/08 15:41 Page 7



11. Services – service pipes through separating floor





12. Service - service pipes through separating floor (using precast edge beams)




Where precast edge beams are adopted it isacceptable to use in-situ concrete local toservices


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E-FC-7

blank page


E-FC-7-Apr2007 29/8/08 15:41 Page 9





Company:

Site:


Ref. Item

1. Are the external wall inner leaves and separating walls ofdense aggregate blockwork (min 1850-2300kg/m3)?

2. Are all floor blocks of dense aggregate (1850-2300kg/m3) andtightly abutted?

3. Are min 300mm wide precast concrete edge beams, or min75mm in-situ concrete downstands installed where the beamsare parallel to the external or separating flanking walls?

4. Are in-situ concrete downstand beams min 75mm wide wherethe beams are bearing on the external or separating flanking walls?

5. Is the concrete topping to the floor blocks at least 50mm thick?

6. Has the floating floor been installed correctly where a levellingscreed is required under FFT1 or 3 resilient battens or mineralwool quilt is required between the FFT2 cradles/saddles?

7. Has the floating floor been installed in accordance with themanufacturer's instructions?

8. Have the resilient flanking strips been fitted at the floor edgeperimeters?

9. Is the ceiling system metal frame, with min 25mm mineral fibre quilt laid over the whole ceiling and of min 300mm depth from top of beam to ceiling board?

10. Is the ceiling board 10kg/m2 and are all joints sealed with tape or caulked with sealant?

11. Are service pipes wrapped in quilt and boxed with two layersof nominal 8kg/m2 gypsum-based board?

12. Is the separating floor satisfactorily complete?




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Screed laid on resilient layers ■Bonded resilient floor cover ■

Floor 4.5mm (min) bonded resilientcovering floor covering (see section 4)

Screed 65mm (min) sand cement screed, or 40mm proprietary screed, 80 kg/m2 (min) mass per unit area

Isolating 5mm foamed polyethylenelayer (1) layer 30-36 kg/m3

Isolating 25mm mineral wool batt layer (2) 140 kg/m3 (min), 25mm EPS

(flooring grade SD) or extrudedpolystyrene insulation

Structural 150mm (min) precast floor concrete floor plank 300 kg/m2

(min) mass per unit area

Ceiling See section 3 for suitable ceiling treatment which is dependent on floor plank depth

DO




■ Install the 5mm and 25mm isolatinglayers with staggered joints

■ Make sure ceiling treatment is installed inaccordance with the manufacturer’sinstructions (where applicable)

■ Ensure the isolating edge strip is 25mmmineral wool batt (min 140 kg/m3) orexpanded (SD grade) or extrudedpolystyrene insulation board

■ Ensure resilient floor cover is bondedusing only suppliers' recommendedadhesives, and is not readily removable

IMPORTANTBonded resilient floor coverings must betested in accordance with Appendix G.

See section 4 for performance requirementsand edge detail installation options.

Polyethylene foams may not be used forbonded resilient floor coverings.

The resilient floor covering material mustbe overprinted with wording prohibiting itsremoval.

Bonded resilient floor covering should besuitably resistant to site and removalstraffic.

E-FC-8.qxd 20/3/09 13:00 Page 1






Separating wall:

• if using robust detail for wall - refer to Table 3ain introduction to select an appropriate robustdetail separating wall

• if using wall requiring pre-completion testing -seek specialist advice

25mm (min) isolation edge strip

Concrete planks to be built into wall:

• wall must not be continuous between storeys

• planks must not abut separating wall

• all voids between planks and blockwork filledwith mortar or flexible sealant

Masonry outer leaf


Inner leaf (min 100mm) aggregate concrete block(1350 kg/m3 to 1600 kg/m3) or (1850 - 2300 kg/m3)or aircrete block (600-800 kg/m3)

Bonded resilient floor cover installed between skirtingand screed (see section 4 for installation options)

5mm isolating layer (1)


25mm (min) isolation edge strip


Concrete planks must be built into walls:





Nominal 8kg/m2 gypsum-based board or 13mmplaster


Section

Section

Alternative detail

Mastic sealant ensuresskirting and wall liningare isolated from screed

E-FC-8.qxd 20/3/09 13:00 Page 2

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E-FC-8

100mm(min)

100mm(min)

150mm(min)


All ceiling treatments must be installed inaccordance with the manufacturer’s instructions.All ceiling joints should be sealed with tape orcaulked with sealant.



• if resilient hangers are used.



board

CT1 – Metal ceiling system – 100mm voidOnly to be used for 200mm (min) depthconcrete planks• any metal ceiling system providing 100mm


board

Downlighters and recessed lightingProvided there is a minimum ceiling void, as statedbelow for CT0 and CT1, downlighters or recessedlighting may be installed in the ceiling:• in accordance with the manufacturer’s




E-FC-8.qxd 17/11/08 11:30 Page 3



4. Isolating layers installation, edge strip and bonded resilient floor cover


Underfloor heating systems (includingconnectors and fixings) installed within thescreed must not penetrate the isolating layersor bridge the screed to the slab. Isolatinglayers with preformed surface indent channels,for the heating elements, may be usedprovided the material meets the specificationfor Isolating layer (2) above.


Note: If required it is permissible to have the5mm layer installed as the lower secondaryisolating layer (as shown in Option B).

OPTION A

OPTION B

Bonded resilient floor cover• min 4.5mm thickness and must be bonded

• must be capable of supporting carpet andwood finishes in habitable rooms

• Laboratory testing performance must beundertaken directly on the resilient cover, and with a wood floor finish as outlined inAppendix G (min∆Lw 17 dB without timberboard overlay; min rd∆Lw 17 dB with timberboard overlay)

Bonded resilient floorcover installed betweenskirting and screed

25mm (min) isolationedge strip



(Note: if required, it ispermissible to have the5mm polyethyleneinstalled as the lowersecondary isolating layer)

Isolating layer (1)• 5mm (min) foamed polyethylene

Isolating layer (2) and isolating edge strip• 25mm (min) thick

• may be mineral wool batt (min 140 kg/m3) or expanded (SD grade) orextruded polystyrene insulation board

(Note: joints for isolating layers 1 and 2 shouldbe staggered)

Bonded resilient floormay be installed up toskirting provided masticsealant isolates skirtingand wall lining fromscreed

25mm (min) isolationedge strip

OPTION A OPTION B

E-FC-8.qxd 17/11/08 11:30 Page 4

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E-FC-8


Section



Bonded resilient floor cover goes under skirting

Remaining gap may be sealed with mastic


Sketch shows CT0 type ceiling treatment Alternative detail

Mastic sealant

E-FC-8.qxd 17/11/08 11:30 Page 5





Company:

Site:


Ref. Item


2. Are joints between precast concrete planks grouted andsealed?


4. Has the 25mm edge strip been installed for all roomperimeters?

5. Are both isolating layers each fully covering the floor slab?

6. Is the resilient floor cover fully covering, and fully bonded to the screed?

7. Are the skirting boards isolated from the screed by theresilient floor cover or flexible sealant?







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E-FC-93mm Thermal Economics IsoRubber Top ■

Precast concrete plank ■Screed ■

Floor 3mm Thermal Economicscovering IsoRubber Top (bonded with

IsoBond adhesive)

Screed 65mm (min) sand cement screed, or 40mm proprietary screed, 80 kg/m2 (min) mass per unit area

Structural 150mm (min) precast floor concrete floor plank 300 kg/m2

(min) mass per unit area

Ceiling See section 3 for suitable ceiling treatment which is dependent on floor plank depth

DO




■ Ensure IsoRubber Top fully covers floorarea

■ Make sure ceiling treatment is installed inaccordance with the manufacturer’sinstructions (where applicable)

■ Ensure IsoRubber Top is bonded toscreed with IsoBond adhesive

E-FC-9.qxd 29/8/08 15:43 Page 1






Separating wall:

• if using robust detail for wall - refer to Table 3ain introduction to select an appropriate robustdetail separating wall

• if using wall requiring pre-completion testing -seek specialist advice

3mm IsoRubber Top installed over whole floorarea and between skirting and screed

Concrete planks to be built into wall:




Masonry outer leaf


Inner leaf (min 100mm) aggregate concrete block(1350 kg/m3 to 1600 kg/m3) or (1850 - 2300 kg/m3)or aircrete block (600-800 kg/m3)

3mm IsoRubber Top installed over whole floor areaand between skirting and screed (see section 4 forinstallation options for underfloor heating)

Close cavity with a flexible cavity stop unless it isfully filled with insulation

Concrete planks must be built into walls:





Nominal 8kg/m2 gypsum-based board or 13mmplaster


Section

Section

Alternative detail


E-FC-9.qxd 29/8/08 15:43 Page 2

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E-FC-9

100mm(min)

100mm(min)

150mm(min)


All ceiling treatments must be installed inaccordance with the manufacturer’s instructions.All ceiling joints should be sealed with tape orcaulked with sealant.



• if resilient hangers are used.



board

CT1 – Metal ceiling system – 100mm voidOnly to be used for 200mm (min) depthconcrete planks• any metal ceiling system providing 100mm


board

Downlighters and recessed lightingProvided there is a minimum ceiling void, as statedbelow for CT0 and CT1, downlighters or recessedlighting may be installed in the ceiling:• in accordance with the manufacturer’s




E-FC-9.qxd 29/8/08 15:43 Page 3




Section



3mm IsoRubber Top installed over whole floorarea and between skirting and screed

Remaining gap may be sealed with mastic



Underfloor heating systems may be installedwithin the screed.


Note: If required it is permissible to have aninsulation layer between screed and plank (asshown in Option B).

OPTION A

OPTION B


Alternative detail

Mastic sealant

E-FC-9.qxd 29/8/08 15:43 Page 4

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E-FC-9

blank page


E-FC-9.qxd 29/8/08 15:43 Page 5





Company:

Site:


Ref. Item


2. Are joints between precast concrete planks grouted andsealed?


4. Is IsoBond adhesive being used?

5. Is the IsoRubber Top fully covering and fully bonded to thescreed?

6. Are the skirting boards isolated from the screed by the resilientfloor cover or flexible sealant?

7. Is the correct ceiling type being used for precast concreteplank thickness?







Contact details for technical assistance from Thermal Economics, manufacturer of IsoRubber Top:


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E-FC-103mm Thermal Economics IsoRubber Top ■

In-situ concrete slab ■For use in loadbearing masonry or reinforced concrete frame construction ■

Floor covering 3mm IsoRubber Topbonded to slab withIsoBond adhesive

Structural floor 175mm (min) in-situconcrete floor slab 2400 kg/m3 (min) density


DO

■ Ensure floor slab density is 2400 kg/m3 (min)


■ Ensure IsoRubber Top is fully bonded toslab with IsoBond adhesive

■ Ensure IsoRubber Top fully covers floorsurface

■ Make sure there is a ceiling void of150mm (min) and ceiling treatment isinstalled in accordance with themanufacturer’s instructions (whereapplicable)

■ Ensure that floor slab breaks the verticalcontinuity of flanking walls

■ Ensure that concrete does not enter thecavity and bridge the two leaves ofsupporting wall blockwork – it isacceptable to use proprietary cavitystops to provide a shutter


Reinforced concrete frameconstruction – alternativeexternal (flanking) wallconstruction

Storey height glazing units are anacceptable alternative to the cavity wallsillustrated:• glazing units should not be continuous



• Refer to Appendix A

Note:Apartments may be built with RobustDetail cavity masonry separating walls(refer to Table 3a of the Introduction)provided floor slab is NOT continuousbetween dwellings

E-FC-10.qxd 17/11/08 11:36 Page 1



1. External (flanking) wall junction – loadbearing masonry construction

2. External (flanking) wall junction – reinforced concrete frame construction with steelor timber frame inner leaf



Mineral wool insulation (min 10 kg/m3)

2 layers of gypsum-based board nominal 8 kg/m2 each layer

Acoustic or flexible sealant

3mm IsoRubber Top installed over whole floor area





Masonry outer leaf


Inner leaf 100mm (min) concrete block (1350 to1600 kg/m3) or (1850 - 2300 kg/m3)




All voids between slab and blockwork filled withmortar or flexible sealant



Gypsum-based board nominal 8kg/m2 or 13mmplaster

Section

Section

Alternative detail


E-FC-10.qxd 17/11/08 11:36 Page 2

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E-FC-10

3. External (flanking) wall junction – reinforced concrete frame construction

4. Separating wall junction – loadbearing masonry construction



Inner leaf 100mm (min) concrete block (1350 to1600 kg/m3) or (1850 - 2300 kg/m3)


Close cavity with a flexible cavity stop unless it isfully filled with mineral wool insulation orexpanded polystyrene beads




Gypsum-based board nominal 8kg/m2 or 13mmplaster


Separating wall:• if using Robust Detail for wall –

refer to Table 3a in Introduction to select anappropriate robust detail separating wall

• if using wall requiring pre-completion testing –seek specialist advice


Wall must not be continuous between dwellings

Slab must not abut separating wall

All voids between slabs and blockwork filled withmortar or flexible sealant


Section

Section

Alternative detail


E-FC-10.qxd 17/11/08 11:36 Page 3



5. Ceiling treatment for E-FC-10

Ceiling treatment must be installed in accordancewith the manufacturer’s instructions.

All ceiling joints must be sealed with tape orcaulked with sealant.

The maximum load on resilient bars shall notexceed that specified in the manufacturer’sinstructions.




Any ceiling system – 150mm void• any metal ceiling system providing 150mm (min)

ceiling void• one layer of nominal 10 kg/m2 gypsum-based

board

Downlighters and recessed lightingProvided there is a minimum ceiling void of150mm, downlighters or recessed lighting may beinstalled in the ceiling:• in accordance with the manufacturer’s




150mm (min)

E-FC-10.qxd 17/11/08 11:36 Page 4

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E-FC-10


Section





Alternative detail



Underfloor heating systems may be installedwithin the screed.


Note: If required it is permissible to have aninsulation layer between screed and plank (asshown in Option B).

OPTION A

OPTION B

E-FC-10.qxd 9/3/09 10:52 Page 5





Company:

Site:


Ref. Item

1. Is concrete slab density 2400 kg/m3 (min)?

2. Where blockwork inner leaves are adopted for the external(flanking) walls are they of the correct density?

3. Is concrete slab 175mm (min) thick?



6. Is there a minimum ceiling void of 150mm?


8. Has the IsoRubber Top been bonded to the slab with IsoBondadhesive?

9. Is the IsoRubber Top fully covering the floor surface?

10. Are service pipes wrapped in quilt and boxed in with twolayers of gypsum-based board, nominal 8 kg/m2 each layer





Contact details for technical assistance from Thermal Economics, manufacturer of IsoRubber Top:


E-FC-10.qxd 9/3/09 10:52 Page 6

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Screed laid on Icopal-MONARFLOOR® TRANQUILT® resilient layer ■


Resilient layer 10mm TRANQUILT®


- 300 kg/m2 (min) massper unit area

Ceiling See section 3 for suitableceiling treatment which isdependent on floor plankdepth and supporting walldensity




■ Ensure TRANQUILT® resilient layer is laidover entire floor surface with 150mmupstand at perimeter walls

■ Ensure integrated overlap is sealed withMonarfloor Acoustic Adhesive

■ Ensure all joints without integratedoverlap are sealed with adhesive andtaped

■ Ensure correct blocks are used inconstruction of external (flanking) walls



SYSTEM INSTALLATION


1) TRANQUILT® (resilient layer to be laidover entire floor area with integratedoverlap seal)

2) TRANQUILT® to be laid with 150mmupstand at wall (to allow for isolationunder wall lining and skirting afterscreed is poured)

3) Monarfloor Acoustic Adhesive (to affixall TRANQUILT® perimeter edges toslab and integrated overlap

4) Butt joints which do not have integraloverlap to be adhered and taped See section 4

Isolate skirting and wall lining from screed

TRAINING ANIMATION

See following link for correct installation ofTRANQUILT® systemwww.monarfloor.co.uk/tranquiltinstallation

From 1 January 2009, RDL can only accept registrationof this floor once the builder agrees to receive trainingfrom Icopal-MONARFLOOR® on the installation of thescreed and resilient layer.Please contact Robust Details for further information.

E-FC-11-Apr2010 24/2/10 11:50 Page 1









TRANQUILT® to be laid with 150mm upstand




Masonry outer leaf


Inner leaf (min 100mm) aggregate concreteblock (1350 kg/m3 to 1600 kg/m3 or 1850 -2300 kg/m3)

TRANQUILT® to be laid with 150mm upstand

TRANQUILT® resilient layer must have jointssealed using integrated overlap with adhesiveor tape See section 4






Section

Section

E-FC-11-Apr2010 24/2/10 11:50 Page 2

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E-FC-11








board



board

Downlighters and recessed lightingProvided there is a minimum ceiling void as statedbelow for CT0, CT1 or CT2, downlighters orrecessed lighting may be installed in the ceiling:• in accordance with the manufacturer’s




E-FC-11-Apr2009 9/3/09 10:41 Page 3




Integrated overlap65mm (min)cement:sandscreed

40mm (min)proprietary screed



Underfloor heating systems which have asupporting layer/board may be laid on top of theTRANQUILT®.


• Affix TRANQUILT® perimeter with Monarfloor Acoustic Adhesive

• Seal integrated overlap with Monarfloor Acoustic Adhesive

TRANQUILT®

Integrated overlap

TRANQUILT®

• Use Monarfloor Acoustic Adhesive to seal butt joints (where integrated overlap is not present)

Screed

Adhesive

TRANQUILT®Tape

E-FC-11-Apr2009 9/3/09 10:41 Page 4

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E-FC-11


Section





E-FC-11-Apr2009 9/3/09 10:41 Page 5





Company:

Site:


Ref. Item

1. Has training been received from Icopal-MONARFLOOR®





6. Is the 10mm TRANQUILT® covering the whole floor slab?

7. Is the TRANQUILT® taken 150mm up the wall?

8. Are the integrated overlaps sealed with Monarfloor AcousticAdhesive?

9. Are the skirting boards and wall linings isolated from thescreed by the TRANQUILT®?

10. Has the installation been signed off by Icopal-MONARFLOOR®

prior to pouring the screed?







Contact details for technical assistance from Icopal-MONARFLOOR® TRANQUILT®, manufacturer of TRANQUILT®

resilient layer system:


E-FC-11-Apr2009 9/3/09 10:41 Page 6

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E-FC-12200mm precast concrete plank ■

Screed laid on Thermal Economics IsoRubber Base HP3 resilient layer ■


Resilient layer 3mm IsoRubber Base HP3layer with IsoEdge flankingstrip

Structural floor - 200mm (min) precastconcrete floor plank- 300 kg/m2 (min) mass

per unit area





■ Ensure 3mm IsoRubber Base HP3resilient layer is laid over the entire floorsurface and has overlapped joints of50mm sealed with tape. On no accountshould the screed come into contact withthe floor slab. (see Section 4 for 40mmproprietary screeds)

■ Ensure 3mm IsoRubber Base HP3overlaps with IsoEdge flanking strip. Onno account should screed come intocontact with floor slab or perimeter walls

■ Ensure the IsoEdge flanking strip isolatesthe skirting and wall linings. On noaccount should screed come into contactwith the wall lining and skirting




SYSTEM INSTALLATION


1) 3mm IsoRubber Base HP3 (resilientlayer to be laid over entire floor areawith minimum 50mm overlaps)

2) IsoEdge flanking strip

3) All joints taped

IsoEdge Flanking Strip

All jointstaped

Min. 50mm overlap

■ IsoEdge flanking strip to be installed atall room perimeters. See manufacturer’sguidance.


From 1 January 2009, RDL can only accept registrationof this floor once the builder agrees to receive trainingfrom Thermal Economics on the installation of thescreed and resilient layer. Please contact Robust Details for further information.

E-FC-12 Dec 09 10/12/09 08:43 Page 1









IsoEdge flanking strip

IsoRubber resilient layer to overlap IsoEdgeflanking strip




Masonry outer leaf



IsoEdge flanking strip must overlap withIsoRubber resilient layer and isolate screedfrom perimeter walls and skirtings

IsoRubber resilient layer must have 50mm (min)overlapped joints and be sealed with tape






Section

Section

E-FC-12 Dec 09 10/12/09 08:44 Page 2

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E-FC-12








board

CT2 – Timber battens and counterbattenswith IsoSonic Hangers Type C. Only to beused for 200mm (min) depth concrete planks• 50 x 50mm softwood battens• 50x50mm counterbattens• Isosonic Hangers Type C• one layer of nominal 8 kg/m2 gypsum-based

board

Downlighters and recessed lightingProvided there is a minimum ceiling void as statedbelow for CT1 or CT2, downlighters or recessedlighting may be installed in the ceiling:• in accordance with the manufacturer’s




E-FC-12 Dec 09 10/12/09 08:44 Page 3




Tapedjoint


50mm 40mm (min)proprietary screed

Taped joint

Polythene layer


• IsoRubber joints to be overlapped by50mm (min)

• Upper IsoRubber edge joints to besealed by tape


• IsoRubber joints to be butt jointed

• IsoRubber joints to be sealed bytape

• Polythene layer to be laid overwhole floor overlapping joints



Underfloor heating systems which have asupporting layer/board may be laid on top of theIsoRubber.


E-FC-12 Dec 09 10/12/09 08:44 Page 4

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E-FC-12


Section





E-FC-12 Dec 09 10/12/09 08:44 Page 5





Company:

Site:


Ref. Item

1. Has training been received from Thermal Economics?





6. Is the IsoEdge flanking strip installed for all room perimeters?

7. Are the IsoRubber joints overlapped by 50mm and sealed with tape?

8. Is the IsoRubber layer overlapping the IsoEdge flanking strip?

9. Are the skirting boards isolated from the screed by the IsoEdgeflanking strip?







Contact details for technical assistance from Thermal Economics, manufacturer of IsoRubber resilient layer system:


E-FC-12 Dec 09 10/12/09 08:44 Page 6

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Separating Floors – Concrete

E-FC-13




Screed laid on InstaCoustic InstaLay 65 resilient layer ■

Screed 65mm (min) cement:sandscreed

Resilient layer InstaLay 65 layer withInstaLay 65 edge strip

Structural floor - 150mm (min) precast concrete floor plank


Ceiling See section 3 for suitableceiling treatment which isdependent on floor plankdepth




■ Ensure InstaLay 65 resilient layer is laidover the entire floor surface and hasoverlapped joints of 50mm sealed withtape. On no account should the screedcome into contact with the floor slab.

■ Ensure InstaLay 65 overlaps withInstaLay 65 edge strip. On no accountshould screed come into contact withfloor slab or perimeter walls

■ Ensure the InstaLay 65 edge stripisolates the skirting and wall linings. Onno account should screed come intocontact with the wall lining and skirting




SYSTEM INSTALLATION


1) InstaLay 65 (resilient layer to be laidover entire floor area with minimum50mm overlaps)

2) InstaLay 65 edge strip

3) All joints taped

InstaLay 65 edge strip

All jointstaped

Min. 50mm overlap

■ InstaLay 65 edge strip to be installed atall room perimeters. See manufacturer’sguidance.

RDL can only accept registration of this floor once thebuilder agrees to receive training from InstaCoustic onthe installation of the screed and resilient layer. Please contact Robust Details for further information.

E-FC-13_Part E-FC-4-Jan2005 29/06/2010 12:46 Page 1






Separating wall:• if using robust detail for wall - refer to Table 3ain introduction to select an appropriate robustdetail separating wall


InstaLay 65 edge strip

InstaLay 65 resilient layer to overlap InstaLay 65edge strip

Concrete planks to be built into wall:• wall must not be continuous between storeys • planks must not abut separating wall • all voids between planks and blockwork filledwith mortar or flexible sealant


Masonry outer leaf



InstaLay 65 edge strip must overlap withInstaLay 65 resilient layer and isolate screedfrom perimeter walls and skirtings

InstaLay 65 resilient layer must have 50mm(min) overlapped joints and be sealed with tape






Section

Section


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E-FC-13






CT0 – Metal ceiling system - 150mm voidTo be used for 150mm (min) depth concreteplanks• any metal ceiling system providing 150mm(min) ceiling void




Downlighters and recessed lightingProvided there is a minimum ceiling void as statedbelow for CT0 or CT1, downlighters or recessedlighting may be installed in the ceiling:• in accordance with the manufacturer’sinstructions

• at no more than one light per 2m2 of ceiling areain each room or see Appendix F

• at centres not less than 0.75m• into openings not exceeding 100mm diameter or100x100mm





4. Resilient layer installation

Jointing tape


Min. 50mm overlap


• InstaLay 65 resilient layer must have 50mm (min)overlapped joints and be sealed with jointing tape

• InstaLay 65 edge strip must be overlapped byInstaLay 65 resilient layer with joints sealed withjointing tape to isolate screed from perimeterwalls and skirtings

• InstaLay 65 edge strip to be installed at allperimeter walls (including door openings, wallrecesses) and service pipes. See manufacturer’sguidance



Underfloor heating systems which have asupporting layer/board may be laid on top of theInstaLay 65.


InstaLay 65 InstaLay 65 edge strip

Floor slab


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E-FC-13


Section










Company:

Site:


Ref. Item

1. Has training been received from InstaCoustics?





6. Is the InstaLay 65 edge strip installed for all room perimeters?

7. Are the InstaLay 65 joints overlapped by 50mm and sealed with tape?

8. Is the InstaLay 65 layer overlapping the InstaLay 65 edge strip?

9. Are the skirting boards isolated from the screed by theInstaLay 65 edge strip?







Contact details for technical assistance from InstaCoustics, manufacturer of InstaLay 65 resilient layer system:



Timber

Tim

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Separating Floor – Timber I-Joists


E-FT-1Timber I-Joists ■

Use with timber frame walls only ■


Floor decking 15mm thick (min) wood based board, density 600 kg/m3 (min)

Joists 240mm (min) timber I-Joists

Absorbent 100mm (min) mineral wool material quilt insulation (10–36 kg/m3)

between joists


DO

■ Lay quilt (min 100mm thick) between alljoists, including doubled up I-joists,ensuring no gaps remain

■ Ensure floating floor treatment is suitableand is installed in accordance with themanufacturer’s instructions

■ Ensure quilt is laid between and notunder flooring battens


■ Ensure resilient ceiling bars are fixed atright angles to the joists

■ Ensure timber floor ceiling treatment iseither CT1, CT2 or CT3 and is fixedcorrectly (see page 4)

■ Stagger joints in ceiling layers


Note: Structural framing details may varyslightly between different manufacturersand this is permitted, however, alldimension specifications within this RD must be adhered to.

E-FT-1-Aug2007 29/8/08 15:50 Page 1


Separating Floor – Timber I-Joists E-FT-1



If using robust detail for wall - refer to Table 3bin introduction to select an appropriate robustdetail separating wall

If using wall requiring pre-completion testing - seek specialist advice

Two layers gypsum-based board total nominalmass per unit area 22 kg/m2 both sides


Close spaces between floor joists with fulldepth timber blocking or continuous headerjoist where joists are at right angles to the wall

Joists may span in either direction



Masonry outer leaf



Two layers gypsum-based board nominal 8 kg/m2 each layer






Alternative detail

Alternative detail

Section

Section

Rip liner

Rip liner

E-FT-1-Aug2007 29/8/08 15:50 Page 2

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E-FT-1

3. Internal wall junction (non loadbearing)

4. Internal wall junction (loadbearing)

Resilient bar nogging

Headplate fixed to resilient bar nogging






Additional support to partition (see Appendix A)

Alternative detail

Rip liner

5. Ceiling treatment for E-FT-1



4 of 6

CEILING BOARD FIXINGS MUST NOTPENETRATE OR TOUCH JOISTS

16mm (min) resilient bars with CT1 and CT216mm (min) metal resilient ceiling bars mountedat right angles to the joists at 400mm centres (bars must achieve a minimum laboratoryperformance of rd∆Rw+Ctr=17dB andrd∆Lw=16dB) – see Appendix E

Ceiling treatment CT1Two layers of gypsum-based board, composedof 19mm (nominal 13.5 kg/m2) fixed with 32mmscrews, and 12.5mm (nominal 10 kg/m2) fixedwith 42 mm screws

Ceiling treatment CT2Two layers of gypsum-based boards composedof 15mm (nominal 12.5 kg/m2) fixed with 25mmscrews and second layer of 15mm gypsum-based board (nominal 12.5 kg/m2) fixed with42mm screws

25mm (min) resilient bars with CT325mm (min) metal resilient ceiling bars mountedat right angles to the joists at 400mm centres(bars must achieve a minimum laboratoryperformance of rd∆Rw+Ctr=17dB andrd∆Lw=16dB) - see Appendix E

Ceiling treatment CT3Two layers of gypsum-based board, composedof 10mm (nominal 12kg/m2) fixed with 30mmscrews and second layer of 10mm (nominal12kg/m2) fixed with 30mm screws

Timber floor ceiling treatment must be either CT1,CT2 or CT3 (see below). All joints to outer layers ofceiling must be sealed with tape or caulked withsealant.

The maximum load on resilient bars should notexceed that specified in the manufacturer’sinstructions.

Ensure ceiling layers have staggered joints.

Services must not puncture ceiling linings (exceptcables, which should be sealed around with flexiblesealant)

Downlighters and recessed lightingDownlighters or recessed lighting may be installedin the ceiling:• in accordance with the manufacturer’s


in each room unless the use of a greater densityof light fittings is supported by testing undertakenin accordance with Appendix F

• at centres not less than 0.75m• into openings not exceeding 100mm diameter or


Note: Only downlighters which have beensatisfactorily assessed in accordance with the procedure described in Appendix F“Determination of the acoustic performance ofdownlighters and recessed lighting in timberseparating floors” are acceptable.

E-FT-1-Aug2007.qxd 14/8/07 14:24 Page 4

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E-FT-1

6. Floating floor treatment for E-FT-1

FFT1 – Resilient composite deep battensystem for E-FT-1• 18 mm (min) t&g flooring board• gypsum-based board nominal 13.5 kg/m2

• FFT-1 resilient composite deep battens• resilient layer must be continuous and

pre-bonded to batten• battens may have the resilient layer at the

top or the bottom • mineral wool quilt laid between battens

– 13mm (min) 33-36 kg/m3, or– 25mm (min) 10-36 kg/m3

• ensure any services do not bridge the resilient layer

Floating floor treatment:

a) Must achieve a minimum laboratory performanceof rd∆Rw+Ctr=13dB and rd∆Lw=15dB - seeAppendix C.



70mm(min)*7. Services – pipes through separating floor

Section

25mm (min) mineral wool quilt (10-36 kg/m3)around pipe

Pipe boxed in with two layers of gypsum-based board combined nominal 16 kg/m2




* Note - void dimension indicated is when floor is loaded to 25 kg/m2.


Alternative detail

5mm (min) polyethylene foamflanking strip

E-FT-1-Aug2007 29/8/08 15:50 Page 5



Ref. Item

1. Are timber I-Joists at least 240mm deep?

2. Has quilt (min 100mm thick) been fitted between the joists?

3. Are resilient ceiling bars fitted at right angles to the joists?

4. Has ceiling system been fitted in accordance with themanufacturer’s instructions?

5. Has floating floor treatment been fitted in accordance with the manufacturer’s instructions?

6. Has quilt been fitted between the floor battens?

7. Is ceiling treatment CT1, CT2 or CT3 fixed to the resilient bars with correct screws, such that the screws do not touch or penetrate the joists?


9. Are vertical service pipes wrapped in quilt and boxed in withtwo layers of gypsum-based board combined nominal massper unit area of 16 kg/m2?






Company:

Site:




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Separating Floor – Timber Solid Joists


E-FT-2Timber Solid Joists ■



Floor decking 11mm thick (min) wood based board, density 600 kg/m3 (min) or Walker Timber perforated deck system

Joists 220mm (min) solid timber joists at maximum 400mmcentres


between joists


DO

■ Lay quilt (min 100mm thick) betweenjoists ensuring no gaps remain


■ Ensure sub-deck quilt is laid betweenand not under flooring battens



■ Ensure timber floor ceiling treatment iseither CT1, CT2 or CT3 and is fixedcorrectly (see page 4)




For wider joist centres

Joist spacings may be increased tomaximum 600mm centres provided:

• joist depth is 240mm (min) and the structural adequacy is assessed by astructural engineer

• floor decking is minimum 15mm thick

E-FT-2-Apr 2011_Part E-FT-2-Aug2005 21/03/2011 07:11 Page 1


Separating Floor – Timber Solid Joists E-FT-2











Masonry outer leaf









Alternative detail

Alternative detail

Section

Section

Rip liner

Rip liner


robustdetails3 of 6



E-FT-2










Additional support to partition (see Appendix A)

Alternative detail

Rip liner

E-FT-2-Aug07 29/8/08 15:52 Page 3







Ceiling treatment CT3Two layers of gypsum-based board, composedof 10mm (nominal 12 kg/m2) fixed with 30mmscrews and second layer of 10mm (nominal 12 kg/m2) fixed with 30mm screws







4 of 6







E-FT-2-Aug07.qxd 14/8/07 14:35 Page 4

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E-FT-2



• FFT-1 resilient composite deep battens• resilient layer must be continuous and pre-bonded to batten

• battens may have the resilient layer at the top or the bottom

• 60mm (min) 10-36 kg/m3 mineral wool quiltlaid between battens






7. Services – pipes through separating floor

Section


Pipe boxed in with two layers of gypsum-based board combined nominal 16 kg/m2





Services may be locatedabove or below quilt

Alternative detail

5mm (min) polyethylene foamflanking strip




Ref. Item

1. Are solid timber joists at least 220mm deep, or at least 240mm deep if joists installed at greater than 400mm centres?




5. Is floor decking 11mm thick (min); or 15mm thick (min) if joists at greater than 400mm centres?


7. Has 60mm quilt been fitted between the floor battens?

8. Is ceiling treatment CT1, CT2 or CT3 fixed to the resilient bars with correct screws such that the screws do not touch or penetrate the joists?








Company:

Site:





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Separating Floor – Metal Web Joists


E-FT-3Timber flange and metal web joists ■



Floor decking 18mm thick (min) wood based board, density min 600 kg/m3

Joists 253mm (min) metal webjoists (see joist type below)

Absorbent 100mm (min) mineral woolmaterial quilt insulation (10–36 kg/m3)

between joists


DO

■ Ensure correct metal web joists are beingused (see joist type)


■ Ensure floating floor treatment is suitableand is installed in accordance with themanufacturer’s instructions (See page 7)

■ Ensure quilt within floating floor is laidbetween and not under flooring battens

■ Install resilient flanking strips around theperimeter of the flooring board to isolatefloor from walls and skirtings


■ Ensure timber floor ceiling treatment isfixed correctly (see page 6)



Notes:

Although single header and sole platesare indicated, increasing the number ofheader and sole plates would beacceptable, however, all dimensionspecifications within this RD must beadhered to.

Metal web joists can be top chord/flangesupported or fully built-in and supportedon the panel and this is permitted,however, all dimension specificationswithin this RD must be adhered to. Notethat joist hangers must not be used tosupport separating floor joists.

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Joist type

IMPORTANT

Only the following metal web joists may beused in E-FT-3:

• MiTek Posi-Joist

• Prestoplan PresWeb

• WOLF easi-joist

• Gang Nail ecojoist

• ITW Alpine SpaceJoist

E-FT-3-Aug07.qxd 5/3/10 07:52 Page 1


Separating Floor – Metal Web Joists E-FT-3

1. External (flanking) wall junction (top chord supported)

Masonry outer leaf







Softwood timber infill between supporting topchords/flanges of joists built into frame to supportfloor (Bottom chord not built into frame)

Ring beams packed to stud width

Site fixed sheathing board for depth of floor


Alternative detail

SectionRip liner

2. External (flanking) wall junction (fully built-in)

Masonry outer leaf







Trimmable blocking to end of joist

Close spaces between floor joists with full depthtimber blocking or continuous header joist wherejoists are at right angles to the wall



Alternative detail

Section Rip liner

E-FT-3-Aug07.qxd 5/3/10 07:52 Page 2

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E-FT-3

3. Separating wall junction (top chord supported)

If using robust detail for wall - refer to Table 3b inintroduction to select an appropriate robust detailseparating wall




Softwood timber infill between supporting topchords/flanges of joists




Softwood timber nogging for resilient bar support (leave a small gap at end of resilient bar)


Alternative detail

Section

Rip liner

4. Separating wall junction (fully built-in)










Alternative detail

Section

Rip liner

E-FT-3-Aug07.qxd 29/8/08 16:28 Page 3



5. Non loadbearing internal wall perpendicular to joists

6. Non loadbearing internal wall parallel to joists


Headplate fixed to joist



Floating floor

Metal web joist (see joist type, page 1)

*Note - non loadbearing partitions may also betaken directly off the floating floor treatment,check with manufacturer's instructions forinstallation (see Appendix A)

Alternative detail


Extra metal web joist (see joist type, page 1) under internal wall

Floor decking


Softwood timber noggings for resilient bar support(leave a small gap at end of resilient bar)


Partition headnoggings at400mm c/c tosupportresilient bar

89 x 38mm (min)noggings hungon Z Clips ateach end at600mm c/c(max)

Z Clip

*Note - non loadbearing partitionsmay also be taken directly off thefloating floor treatment, check withmanufacturer's instructions forinstallation (see Appendix A)

E-FT-3-Aug07.qxd 29/8/08 16:28 Page 4

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E-FT-3

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7. Loadbearing internal wall perpendicular to joists

8. Loadbearing internal wall parallel to joists


Headplate fixed to internal wall beams

Internal loadbearing wall


Softwood timber infill between supporting top chords/flanges where required

Floor decking

Internal wall beams


Softwood timber noggings for resilient bar support (leave a small gap at end of resilient bar)


Note: Detail shows top chord/flange supported



Softwood timber infill between supporting topchords/flanges where required

Floor decking

Internal wall beams






Timber blocking to joist

Internal wall beam


Alternative detail

E-FT-3-Aug07.qxd 29/8/08 16:28 Page 5



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Ceiling treatment CT2

Two layers of gypsum-based boards composedof 15mm (nominal 11.7 kg/m2) fixed with 25mmscrews and second layer of 15mm gypsum-based board (nominal 11.7 kg/m2) fixed with42mm screws













E-FT-3-Aug07.qxd 14/8/07 14:38 Page 6

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E-FT-3

`10. Floating floor treatment for E-FT-3


• FFT-1 resilient composite deep battens• battens may have the resilient layer at the




* Note - Services may run within the floor zone(see Appendix A)






Section


Pipe boxed in with two layers of gypsum-based board, combined nominal 16 kg/m2






Alternative detail5mm (min) polyethylene foamflanking strip

Sketch shows top chord supportedexternal (flanking) wall junction detail, forfully built-in arrangement see section 2

E-FT-3-Aug07.qxd 29/8/08 16:28 Page 7



6 of 8

Ref. Item

1. Are correct metal web joists being used (see page 1 of Robust Detail)?

2. Which of the permitted metal web joist types are being used?

3. Are joists at least 253mm deep?






9. Is ceiling treatment CT1, CT2 or CT3 fixed to the resilient bars with correct screws such that the screws do not touch or penetrate the joists?

10. Are all joints to gypsum-based boards sealed with tape orcaulked with sealant?







Company:

Site:




E-FT-3-Aug07.qxd 29/8/08 16:28 Page 8

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E-FT-4Finnforest SoundBar Systems ■


Floating floor 40mm Gyvlon SoundBarscreed on minimum 500gauge polythene on 34mmFinnforest SoundBar Board


Joists 220mm (min) Finnjoists


between joists

Ceiling See section 5 for ceilingtreatment

DO

■ Lay quilt (min 100mm thick) between alljoists, including doubled up Finnjoists,ensuring no gaps remain

■ Ensure Finnforest floating floor treatmentis suitable and is installed in accordancewith the manufacturer’s instructions



■ Ensure ceiling treatment is fixed correctly(see section 5)




E-FT-4-May2008 29/8/08 15:56 Page 1








SoundBar perimeter edge strip


Finnjoists may span in either direction



Masonry outer leaf






Finnforest SoundBar Board

Finnjoists may span in either direction



Section

Section

Alternative detail

Timber batten to support joint. Alternatively, proprietary metal strap can be used

Gypsum-based board rip liner (thickness as firstlayer of main wall lining)


Alternative detail

Timber batten to support joint. Alternatively, proprietary metal strap can be used



E-FT-4-May2008 29/8/08 15:56 Page 2

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E-FT-4










Alternative detail

Timber batten to support joint.Alternatively, proprietary metalstrap can be used

Gypsum-based board rip liner(thickness as first layer of mainwall lining)


E-FT-4-May2008 29/8/08 15:56 Page 3




4 of 6




Downlighters and recessed lightingDownlighters or recessed lighting may be installedin the ceiling in accordance with the manufacturer’sinstructions


Min 16mm resilient bars at 400mm centres,mounted at right angles to joists

See detail CT2

Two layers gypsum-based board nominal massper unit area 12.5 kg/m2 per layer (see below)

100mm (min) metal frame suspended service ceilingsupported from resilient bars only according tomanufacturer’s instructions. See Appendix A

12.5mm ceiling board (nominal 8 kg/m2)

*Note - Ensure that there is no contact betweenscrews and joists

100mm(min)

Ceiling treatment CT2Two layers of gypsum-based boards composed of15mm (nominal 12.5 kg/m2) fixed with 25mmscrews and second layer of 15mm gypsum-basedboard (nominal 12.5 kg/m2) fixed with 42mmscrews

16mm (min) resilient bars with CT216mm (min) metal resilient ceiling bars mounted atright angles to the joists at 400mm centres (bars must achieve a minimum laboratoryperformance of rd∆Rw+Ctr=17dB andrd∆Lw=16dB) – see Appendix E

E-FT-4-May2008 29/8/08 15:56 Page 4

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E-FT-4



a) Must be installed in accordance with themanufacturer’s instructions.

b) Require 10mm SoundBar resilient flanking stripsaround perimeter.

c) Isolate the screed at all abutments with walls,columns, bases, etc., to full depth of screedusing 10mm SoundBar resilient flanking strip.

d) Flanking strip to extend a minimum 130mmabove structural deck.

e) Lay separating polythene slip layer (min. 500gauge) over SoundBar board, lapping 100mm atjoints and taping all joints.


Alternative detailTimber batten to support joint. Alternatively, proprietary metal strap can be used



SoundBarperimeteredge strip

40mm Gyvlon SoundBar Screed

Minimum 500 gauge polythene slip membrane

34mm SoundBar board


Pipe boxed in with two layers of gypsum-basedboard combined nominal 16 kg/m2

10mm resilient flanking strip with apron

40mm Gyvlon SoundBar Screed

Slip membrane

SoundBar Board

75mm high timber for pipe opening


Section

E-FT-4-May2008 29/8/08 15:56 Page 5



Ref. Item

1. Are timber Finnjoists at least 220mm deep?

2. Where used, is rip detail correct?

3. Are SoundBar perimeter edge strips installed correctly?

4. Has the SoundBar floating floor treatment been fitted inaccordance with the manufacturer’s instructions?




8. Are the ceiling treatments fixed to the resilient bars with correct screws, such that the screws do not touch or penetrate the joists?

9. Is service void minimum 100mm?






Company:

Site:




Contact details for technical assistance from Finnforest, manufacturer of SoundBar floor system:



E-FT-4-May2008 29/8/08 15:56 Page 6

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E-FT-5Cellecta ScreedBoard 28® on timber sub-floor ■

Timber I-Joists ■Use with timber frame walls only ■

Floating floor Cellecta ScreedBoard 28®


Joists 240mm (min) timber I-joist


between joists

Ceiling See section 5 for ceilingtreatment

DO

■ Lay quilt (min 100mm thick) between alljoists, including doubled up timber I-joists,ensuring no gaps remain

■ Apply Cellecta SB adhesive to allScreedBoard 28® decking joints

■ Install YELOfon FS50 flanking anglearound the perimeter of the ScreedBoard 28® to isolate floor fromwalls and skirtings


■ Ensure ceiling treatment is fixed correctly(see section 5)




E-FT-5 25/3/09 14:29 Page 1








YELOfon FS50 flanking angle





Masonry outer leaf





ScreedBoard 28®





Section

Section

Alternative detail



Alternative detail



E-FT-5 25/3/09 14:29 Page 2

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E-FT-5










Alternative detail

Ensure fixings do not penetrate the resilient layer

Two layers gypsum-basedboard nominal 8 kg/m2 eachlayer


E-FT-5 25/3/09 14:29 Page 3




4 of 6







See detail CT1 or CT2 below

Two layers gypsum-based board.See detail CT1 or CT2 below

150mm (min) metal frame suspended service ceilingsupported from resilient bars only according tomanufacturer’s instructions. See Appendix A



150mm(min)





E-FT-5 25/3/09 14:29 Page 4

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E-FT-5

6. Undefloor heating systems below ScreedBoard 28®



ScreedBoard 28®

Apply SB adhesive to all ScreedBoard 28®

decking joints

Expanded or extruded polystyrene supportlayer


Pipe boxed in with two layers of gypsum-basedboard combined nominal 16 kg/m2


ScreedBoard 28®


Section

E-FT-5 25/3/09 14:29 Page 5



Ref. Item

1. Are timber I-joists minimum 240mm deep?

2. Is sub-deck minimum 18mm, 600 kg/m3?

3. Are YELOfon FS50 flanking angles installed correctly?

4. Has the ScreedBoard 28® floating floor treatment been fitted in accordance with the manufacturer’s instructions?




8. Are the ceiling treatments fixed to the resilient bars with correct screws, such that the screws do not touch or penetrate the joists?

9. Is secondary ceiling void minimum 150mm?






Company:

Site:




Contact details for technical assistance from Cellecta, manufacturer of ScreedBoard 28® system:



E-FT-5 25/3/09 14:29 Page 6

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E-FT-6Cellecta® ScreedBoard® 28 on timber sub-floor ■

Timber flange and metal web joists ■Use with timber frame walls only ■

Floating floor Cellecta® ScreedBoard® 28

Floor decking 18mm thick (min) wood based board, density min 600 kg/m3

Joists 253mm (min) metal webjoists (see joist type below)

Absorbent 100mm (min) mineral woolmaterial quilt insulation (10–36 kg/m3)

between joists


DO

■ Ensure correct metal web joists are beingused (see joist type)


■ Apply Cellecta® SB adhesive to allScreedBoard® 28 decking joints

■ Install YELOfon® FS50 flanking anglearound the perimeter of the ScreedBoard® 28 to isolate floor fromwalls and skirtings


■ Ensure timber floor ceiling treatment isfixed correctly (see section 9)



Notes:

Although single header and sole platesare indicated, increasing the number ofheader and sole plates would beacceptable, however, all dimensionspecifications within this RD must beadhered to.

Metal web joists can be top chord/flangesupported or fully built-in and supportedon the panel and this is permitted,however, all dimension specificationswithin this RD must be adhered to. Notethat joist hangers must not be used tosupport separating floor joists.

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Joist type

IMPORTANT

Only the following metal web joists may beused in E-FT-6:

• MiTek Posi-Joist

• Prestoplan PresWeb

E-FT-6_Part E-FT-3 29/06/2010 14:22 Page 1



1. External (flanking) wall junction (top chord supported)

Masonry outer leaf




YELOfon® FS50 flanking angle

ScreedBoard® 28


Softwood timber infill between supporting topchords/flanges of joists built into frame to supportfloor (Bottom chord not built into frame)






Alternative detail

Section

2. External (flanking) wall junction (fully built-in)

Masonry outer leaf





ScreedBoard® 28



Trimmable blocking to end of joist





Alternative detail

Section

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E-FT-6

3. Separating wall junction (top chord supported)





ScreedBoard® 28

Softwood timber infill between supporting topchords/flanges of joists







Section

4. Separating wall junction (fully built-in)





ScreedBoard® 28







Section

Alternative detail

Alternative detail

E-FT-6_Part E-FT-3 29/06/2010 14:22 Page 3



5. Non loadbearing internal wall perpendicular to joists

6. Non loadbearing internal wall parallel to joists





ScreedBoard® 28


Alternative detail


ScreedBoard® 28

Extra metal web joist (see joist type, page 1) under internal wall

Floor decking


Softwood timber noggings for resilient bar support(leave a small gap at end of resilient bar)


Partition headnoggings at400mm c/c tosupportresilient bar

89 x 38mm (min)noggings hungon Z Clips ateach end at600mm c/c(max)

Z Clip

E-FT-6_Part E-FT-3 29/06/2010 14:23 Page 4

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E-FT-6

5 of 8

7. Loadbearing internal wall perpendicular to joists

8. Loadbearing internal wall parallel to joists





ScreedBoard® 28

Floor decking

Softwood timber infill between supporting top chords/flanges where required

Internal wall beams


Softwood timber noggings for resilient bar support (leave a small gap at end of resilient bar)





ScreedBoard® 28

Floor decking

Softwood timber infill between supporting topchords/flanges where required

Internal wall beams







Timber blocking to joist

Internal wall beams

Headplate fixed to internal wall beamsAlternative detail

Note:

Main detail showstop chord/flangesupported

Alternative detailshows bottomchord supported

E-FT-6_Part E-FT-3 29/06/2010 14:23 Page 5



6 of 8








See detail CT1 or CT2 below

Two layers gypsum-based board.See detail CT1 or CT2 below

150mm (min) metal frame suspended serviceceiling supported from resilient bars only accordingto manufacturer’s instructions. See Appendix A



150mm(min)





E-FT-6_Part E-FT-3 29/06/2010 14:23 Page 6

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E-FT-6

`10. Underfloor heating systems below ScreedBoard® 28


Section


Pipe boxed in with two layers of gypsum-basedboard, combined nominal 16 kg/m2


ScreedBoard® 28


Sketch shows top chord supportedexternal (flanking) wall junction detail, forfully built-in arrangement see section 2


ScreedBoard® 28

Apply SB adhesive to all ScreedBoard® 28decking joints

Expanded or extruded polystyrene supportlayer

E-FT-6_Part E-FT-3 29/06/2010 14:23 Page 7

robustdetails 8 of Edition 3July 2010 Update


8

Ref. Item

1. Are correct metal web joists being used (see page 1 of Robust Detail)?

2. Which of the permitted metal web joist types are being used?

3. Are joists at least 253mm deep?




7. Is ceiling treatment fixed to the resilient bars with correctscrews such that the screws do not touch or penetrate the joists?

8. Are all joints to gypsum-based boards sealed with tape orcaulked with sealant?

9. Is secondary ceiling void minimum 150mm?

10. Has the ScreedBoard® 28 floating floor treatment been fitted in accordance with the manufacturer’s instructions?

11. Are YELOfon® FS50 flanking angles installed correctly?






Company:

Site:




Contact details for technical assistance from Cellecta®, manufacturer of ScreedBoard® 28 system:


E-FT-6_Part E-FT-3 29/06/2010 14:23 Page 8

Steel - concrete composite

Ste

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te


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Separating Floor – Steel-concrete composite

Edition 3April 2007

E-FS-1In-situ concrete slab supported by profiled metal deck ■

Use with steel frame construction only ■

Floating Floor See section 4 for suitablefloating floor treatment

Structural floor In-situ concrete slabsupported by profiledmetal decking:• “shallow” or “deep”profiled metal decking• overall distance from topsurface of concrete tounderside of ceilingtreatment 300mm (min)• concrete thickness – 80mm (min) at shallowestpoint, and– 130mm (min) at deepestpoint• concrete density 2200 kg/m3 (min)


DO■ Ensure floor slab density is 2200kg/m3 (min)


■ Ensure that where floor profiles are at aright angle to walls the voids are filledwith profiled mineral wool inserts andcaulked with acoustic or flexible sealant

■ Ensure minimum concrete thickness -80mm at shallowest point and 130mm atdeepest point



■ Ensure that the overall distance from topsurface of concrete to underside ofceiling treatment is at least 300mm

■ Ensure ceiling board is not in directcontact with any steel beams/columns


All sketches show “shallow” trapezoidalprofiled metal decking. “deep” trapezoidaland “shallow” and “deep” re-entrantprofiled metal decking is also acceptable


Storey height glazing units are anacceptable alternative to the external wallsillustrated:• glazing units should not be continuous



• refer to Appendix A

E-FS-1-Apr2007 29/8/08 15:58 Page 1


Separating Floor – Steel-concrete composite E-FS-1

1. External (flanking) wall junction - steel or timber frame inner leaf

Sketch shows FFT1 type floating floor treatment

2. External (flanking) wall junction - masonry inner leaf

Outer leaf may be masonry or precast panels


Inner leaf (min 100mm) concrete block (1350 to1600 kg/m3 or 1850 to 2300 kg/m3)

5mm resilient flanking strip


Gypsum-based board nominal 8 kg/m2 or 13mmplaster


Deck/slab must not abut inner leaf


Close cavity with a flexible cavity stop unless it isfully filled with mineral wool insulation orexpanded polystyrene beads



Where floor profiles are at a right angle to walls,voids to be filled with profiled mineral wool insertsand caulked with acoustic or flexible sealant

Note: for “deep” decking, the beam will be castwithin the slab.

Particular attention should also be paid to BuildingRegulation Part B – Fire Safety.




2 layers (min) gypsum-based board nominal 8 kg/m2 each layer


Deck/slab must not abut inner leaf




Where floor profiles are at a right angle to walls,voids to be filled with profiled mineral wool insertsand caulked with acoustic or flexible sealant

Note: for “deep” decking, the beam will be castwithin the slab.


Sketch shows FFT1 type floating floor treatment

Section

Section

E-FS-1-Apr2007 29/8/08 15:58 Page 2

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Edition 3April 2007

E-FS-1

3. Ceiling treatment for E-FS-1

Any ceiling system• one layer of nominal 8 kg/m2 gypsum-based

board

Ceiling treatment must be installed in accordancewith the manufacturer’s instructions

All ceiling joints must be sealed with tape orcaulked with sealant

The maximum load on resilient bars shall notexceed that specified in the manufacturer’sinstructions




300mm (min)





E-FS-1-Apr2007 29/8/08 15:58 Page 3



4. Floating floor treatments for E-FS-1









top or the bottom

d) For further guidance on floating floor treatmentsand flanking strips please refer to Appendix A.



resilient layer





top or the bottom





• 9mm (min) t & g flooring board• resilient layer pre-bonded to flooring board• no services to be installed in floor system

E-FS-1-Apr2007 29/8/08 15:58 Page 4

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Edition 3April 2007

E-FS-1


Section




Sketch shows FFT1 type floating floor treatment and metal ceiling treatment

E-FS-1-Apr2007 29/8/08 15:58 Page 5



Ref. Item

1. Is concrete density 2200 kg/m3 (min)?

2. Is concrete at least 80mm thick at shallowest point and130mm thick at deepest point?



5. Is overall distance from top surface of concrete to underside ofceiling treatment at least 300mm?


7. Has floating floor treatment been installed in accordance withthe manufacturer’s instructions?


9. Are vertical service pipes wrapped in quilt and boxed in with twolayers of gypsum-based board, nominal 8 kg/m2 each layer?





Company:

Site:




E-FS-1-Apr2007 29/8/08 15:58 Page 6

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Separating Floor – UltraBEAM Metal Joists


E-FS-2Hadley Group UltraBEAM Metal Joists ■

Use with lightweight metal frame walls only ■


Floor decking 22mm thick (min) woodbased board, density 600 kg/m3 (min)

Joists 225mm (min) deepUltraBEAM metal joists


between joists


DO

■ Lay quilt (min 100mm thick) between alljoists, including doubled up joists,ensuring no gaps remain


■ Ensure quilt is laid between and notunder flooring battens



■ Ensure ceiling treatment is fixed correctly(see page 4)



E-FS-2-Mar2008 29/8/08 16:00 Page 1


Separating Floor – Metal Joists E-FS-2

1. External (flanking) wall junction – masonry outer leaf

2. External (flanking) wall junction – timber cladding outer leaf

8mm (min) weatherboard

50x50mm timber battens

25x50mm timber counterbattens


Mineral wool insulation batts, 33-60 kg/m3,between studs to 600mm (min) above bottomrail of steel frame

5mm (min) resilient flanking strip installed atperimeter and turned under skirting board




Mineral wool insulation batts, 33-60 kg/m3,between studs to 600mm (min) below ceiling level

Two layers gypsum-based board fixed to steelframe nominal 20 kg/m2 combined, joints to bestaggered and taped


25mm (min) cavity


Mineral wool insulation batts, 33-60 kg/m3,between studs to 600mm (min) above bottomrail of steel frame

5mm (min) resilient flanking strip installed atperimeter and turned under skirting board





Two layers gypsum-based board fixed toexternal steel frame nominal 20 kg/m2 combined

Section

Section

E-FS-2-Mar2008 29/8/08 16:00 Page 2

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Separating Floor – Metal Joists


E-FS-2


2 layers of gypsum-based board nominal 20 kg/m2 combined, joints to be staggered andtaped


Lipped ‘Zed’ floor support by Hadley Group

Mineral wool insulation batts, 33-60 kg/m3,between studs to 600mm (min) below deckinglevel


Section

If using Robust Detail for wall - refer to Table 3c inIntroduction to select an appropriate robust detailseparating wall


Mineral wool insulation batts, 33-60 kg/m3,between studs to 600mm (min) above bottom railof steel frame

Floating floor treatment (see section 6)

5mm (min) resilient flanking strips installed atperimeter and turned under skirting board

Flexible acoustic sealant below plasterboard

225mm (min) deep UltraBEAM metal joists with22mm water resistant t&g floor decking

100mm mineral wool insulation quilt - 10-33 kg/m3

(min)

Ceiling treatment (see section 5)

Fixing angle


Mineral wool insulation batts, 33-60 kg/m3, betweenstuds to 600mm (min) below decking level

E-FS-2-Mar2008 29/8/08 16:00 Page 3

5. Ceiling treatment for E-FS-2



4 of 6







Metal floor ceiling treatment must be as shownbelow. All joints to outer layers of ceiling must besealed with tape or caulked with sealant.









Note: Only downlighters which have beensatisfactorily assessed in accordance with the procedure described in Appendix F“Determination of the acoustic performance ofdownlighters and recessed lighting inlightweight separating floors” are acceptable.

E-FS-2-Mar2008 29/8/08 16:00 Page 4

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Separating Floor – Metal Joists


E-FS-2

6. Floating floor treatment for E-FS-2

FFT1 – Resilient composite deep battensystem• 22 mm (min) t&g flooring board• gypsum-based board nominal 13.5 kg/m2

• FFT-1 resilient composite deep battens• resilient layer must be continuous and

pre-bonded to batten• battens may have the resilient layer at the








70mm(min)*7. Services – pipes through separating floor

Section

Service pipe

Mineral wool insulation batts, 33-60 kg/m3,between studs of steel frame

25mm mineral fibre quilt insulation (10-36kg/m3)installed around the complete perimeter of theservice pipe. Where the service pipe penetratesthe separating floor, all voids are to be packedwith insulation quilt

5mm (min) resilient flanking strips installed atperimeter and turned under skirting board


Proprietary fire collar fitted around pipe andfixed to underside of steel joists

2 layers of gypsum-based board nominal 20 kg/m2 combined fixed to 45mm metal framestud forming duct. Joints to be staggered andtaped





E-FS-2-Mar2008 29/8/08 16:00 Page 5



Ref. Item

1. Are UltraBEAM metal joists at least 225mm deep?






7. Is ceiling treatment fixed to the resilient bars with correctscrews?








Company:

Site:




Contact details for technical assistance from Hadley Group, manufacturer of UltraBEAM metal joists:


E-FS-2-Mar2008 29/8/08 16:00 Page 6

Appendices

App

endi

ces


robustdetails1

Appendix A1 – Additional Guidance


Section Page

Wall ties in cavity masonry separating walls 1Wall ties in cavity masonry external walls 1Cavity stops 2Cavity trays 2Movement joints in cavity masonry separating walls 2Bed joint reinforcement 3Internal floor joists/floor beams and masonry separating walls 3Structural steelwork in masonry separating walls 4Concrete beam and block ground and internal floors 4Coursing in blockwork separating walls 4Flues in separating walls 4Internal render 4Spandrel panels 5Services and chases in separating walls 5

Gypsum-based board 5

Room-in-roof for masonry walls - requirements for gypsum-based boards 5

Cavity masonry separating walls – staggeredexternal (flanking) wall junction 6Roof junctions – thermal insulation 6Building Regulations Part A (2004) 6Internal walls (minimum mass requirements) 6Junctions between internal partition walls andseparating floors 6Subfloor ventilation 7Radon and methane barriersGround floor junctions 7Screed thickness 7Precast concrete plank separating floors with steel beams 7Services in separating floors 8Underfloor heating systems in separating floors 8Resilient bars 9Timber floating floor treatments 9Floating floor treatments in kitchens and bathrooms 9Laminated or ceramic flooring on separating floors 9Screed floating floor treatments 9Masonry angle supports 9Full height glazing units junction with robust details separating floors 9Specification requirements 10Lifting holes in cassette floors 10

Wall ties in cavity masonry separatingwallsOnly “type A” wall ties are suitable for use withmasonry cavity separating wall robust details.

Approved Document E clause 2.19 describes therequirements for Tie Type A (separating walls) asfollows:

Tie type AConnect the leaves of a masonry cavity wallonly where necessary by butterfly ties asdescribed in BS 1243: 1978 Metal ties forcavity wall construction, and spaced asrequired for structural purposes (BS 5628-3:2001 Code of practice for use of masonry.Materials and components, design andworkmanship, which limits this tie type andspacing to cavity widths of 50mm to 75mmwith a minimum masonry leaf thickness of90mm). Alternatively, use wall ties with anappropriate measured dynamic stiffness for the cavity width. The specification for wall ties of dynamic stiffness, kXmm in MN/m with a cavity width of X mm and n ties/m2

is n.kXmm<4.8 MN/m3.

When using wall ties for masonry separatingwalls the specifier should ensure that the walltie manufacturer has a test report thatdemonstrates compliance with the requiredADE criteria.

Wall ties in cavity masonry external wallsIn relation to the wall tie requirements for externalwalls tie “Type A” may be used if it satisfies therequirements of Building Regulation Part A –Structure. However, where tie “Type A” does notmeet these requirements for external walls tie “type B” wall ties should be used.

Approved Document E clause 2.20 describes therequirements for Tie Type B (external walls) asfollows:

Tie type BConnect the leaves of a masonry cavity wallonly where necessary by double-triangle ties as described in BS 1243: 1978 Metal ties forcavity wall construction, and spaced asrequired for structural purposes (BS 5628-3:2001 Code of practice for use of masonry.Materials and components, design andworkmanship, which limits this tie type andspacing to cavity widths of 50mm to 75mmwith a minimum masonry leaf thickness of90mm). Alternatively, use wall ties with anappropriate measured dynamic stiffness for the cavity width. The specification for wall ties of dynamic stiffness, kXmm in MN/m with a cavity width of X mm and n ties/m2 isn.kXmm<113 MN/m3.

Contents

Appendix A1 2011_Appendix-Jan2005 02/12/2010 09:55 Page 1

robustdetails 2 Edition 3January 2011 Update


Cavity stopsThe flexible cavity stops at the junction of theseparating wall and the external (flanking) wall areshown in the robust details as a single piece ofmaterial (diagram a). It is acceptable for these to be provided as two separate pieces (diagram b), or three separate pieces (diagram c).

Minimum 1.0m

Dense flexible board,(max 20mm wide)bitumen impregnated,minimum mass perunit area 4 kg/m2

De-bonded flatmetal ties at450mm centres

20mm (min) deep flexiblepolysulphide sealant

Diagram a Diagram b

The following types of cavity stop may be used:

• single mineral wool batt cavity stops

• dual rigid cavity stops on either side of theexternal wall cavity

• single rigid cavity stop attached to one leaf of the separating wall only

• flexible single cavity stop such as the mineralwool “tubular style”

• flexible double cavity stops such as the mineralwool “tubular style” where one is fitted in linewith each leaf of the separating wall.

Single rigid cavity stops which structurally coupleboth leaves of the separating wall are not permitted.

Cavity traysThe cavity trays shown above the cavity stops areincluded for illustrative purposes only and not foracoustic reasons.

Movement joints in cavity masonryseparating walls

Separating walls with a gypsum-based boardfinish Where possible, movement joints should beavoided in separating walls with a gypsum-basedboard finish. Where they are essential, they shouldbe formed as follows:

Diagram c

Where possible, movement joints should belocated in bathrooms or other minor rooms orbehind cupboards, etc.

Separating walls with wet plaster finishMovement joints are not acceptable in robust detailseparating walls with a wet plaster finish unlessthey are strategically placed behind internal walljunctions or service pipe casings.

The movement joints must also be staggered andspaced not less than 1m apart, as shown inDiagram d above.

Dense flexible board,bitumen impregnated,minimum mass perunit area 4 kg/m2

20mm (min) deep flexiblepolysulphide sealant

De-bonded flat metalties at 450mm centres

Diagram e

Diagram

Separating wall leaves

Flexible cavity stop

Partial fill insulation should be installed up to thecavity stop.

External (flanking) wallwith partial fill insulation


f

Diagram d

robustdetails3



Bed joint reinforcementIt is acceptable to install masonry reinforcementwithin the horizontal bed joints of the cavitymasonry separating provided:

• the masonry reinforcement is contained whollywithin the mortar bed joint of each individual leafof masonry

• the masonry reinforcement does not connect thetwo leaves of the cavity walls together or bridgethe cavity in any way

Internal floor joists/floor beams andmasonry separating wallsInternal floor joists at right angles to the separatingwall may be supported by metal joist hangers or be built into the wall.

The acoustic performance of separating walls isadversely affected by any gaps in the masonry as these provide a direct sound transmission path. It is essential that joists and beams are built in only if a high standard of workmanship canbe guaranteed.

Solid timber joists Solid timber joists may be built into the separatingwall, provided that:

• the mortar joints around each joist perimeter arerecessed or struck, and

• the joint between the masonry and the timber iscarefully pointed with silicone sealant.

accordance with the manufacturer’s instructions. In circumstances where the joist end cap is largerthan the depth of the joist, such that there is a gapbetween the top of the joist and the joist end cap,this should be filled with mineral wool or othersuitable material such that the acousticperformance of the wall is maintained.

Metal web joistsMetal web joists may be built into the separatingwall following the guidance for solid timber joistsabove. Metal web joists must have solid ends.

Timber I-JoistsTimber I-joists may be built into the separatingwall, provided that:

• proprietary filler pieces are fitted on both sides of the web between the top and bottom flanges.These filler pieces must not damage the joistflanges - their depth should be slightly less thanthe dimension between the joist flanges toachieve a “loose fit”.

• the mortar joints around each joist perimeter are recessed or struck, and

• the joint between the masonry and the timberand any other air paths are carefully pointed with silicone sealant.

Alternatively, proprietary joist caps/ends designedto satisfy the air leakage requirements of Approved

Document L1 may be used. They should beinstalled in accordance with the manufacturer’sinstructions. In circumstances where the joist endcap is larger than the depth of the joist, such thatthere is a gap between the top of the joist and thejoist end cap, this should be filled with mineralwool or other suitable material such that theacoustic performance of the wall is maintained.

Alternatively, proprietary joist caps/endsdesigned to satisfy the air leakagerequirements of Approved Document L1 may be used. They should be installed in




Steel beamsSteel beams may be built into the separating wall,provided that all voids around the beam ends arefilled with mortar or flexible sealant.

Separating walls should not be constructed off steel beams.

Structural steelwork in masonryseparating wallsSteel columns built into masonry separating wallsare not permitted.

Separating walls should not be constructed offsteel beams.

Concrete beam and block ground andinternal floorsConcrete beam and block floors may be built intothe separating wall, provided:

• all voids are carefully filled with mortar

• the floor does not bridge the cavity leaves.

False chimney breast

Nominal 8mm render


Flues in separating wallsFlue blocks may not be built into the separatingwall where the finish is wet plaster. Flue blocks mayonly be built into the normal width of a separatingwall where a diagram is included in the robust detail.

Any of the Robust Details masonry separating wallswith gypsum-based board on dabs finish, may usethe following alternative detail:

Coursing in blockwork separating wallsFor the purposes of adjusting coursing it ispermissible to use smaller units of robust detailseparating wall material (e.g. brick sized), providedthe density of the smaller units is at least the sameas the separating wall material.

Internal render Some of the robust details for masonry separatingwalls indicate the use of an internal render (parge)coat prior to the application of dry lining. Where acement:sand render coat is used it should not befloat or skim finished but preferably applied in anuneven manner with a trowel (or equivalent) andscratch finished.

Internal render may be omitted from the followinglocations:

• wall surfaces not facing into a room

• floor joist/beam zone

• roof space (where there are no rooms in the roof)

• staircases may be installed prior to the applicationof render, and the render and gypsum-basedboard are not required behind the stair string.

Mixes quoted are for cement, lime and sand byvolume based on damp sand. Mixes made withcement, sand and plasticiser are also acceptable.


robustdetails5



Spandrel panelsWhere stated in the robust detail, spandrel panelsare an acceptable alternative to building the cavityseparating wall in the roof space (without room-in-roof).

When adopting spandrel panels particular attentionshould be paid to Building Regulations Part B - FireSafety, the dimensions given below are the minimumrequired to maintain only the acoustic integrity.

The supporting blockwork should extend at least300mm above the finished ceiling layer. The top ofthe cavity wall should be closed with a cavity stop.The junction between the spandrel panel andsupporting blockwork should be sealed withflexible or acoustic sealant. The spandrel panelmay be mounted on a mineral fibre panel.

The spandrel panel should consist of:

2 layers of gypsum-based board lining each side ofa minimum 35x45mm timber frame, each layer tobe a nominal 8 kg/m2. Alternatively, framing can beformed from lightweight steel instead of timber.

Frame (timber ormetal)

Lining

Cavity stop

Flexible oracoustic sealant

Two panels may be adopted provided they areconstructed with a minimum 50mm cavity maintainedbetween wall panels, or stud should board beomitted from the inner faces of the spandrel panels.

Wall cavities must be maintained within roof voids.Linking of wall leaves by spandrel panels is notpermitted.

Services and chases in separating wallsWhere possible, services should not be built intothe separating wall.

However, where chasing is permitted in the Detail,they should be kept to a minimum. Chases mustnot be located back to back. Care must be takento ensure all voids are fully filled with mortar. Whereconduits or cappings are used they should not bein contact with the gypsum-based board.

The robust details for timber and steel framed walls show how services should be built in.

Gypsum-based boardGypsum-based boards may be either plastergypsum-based or cement gypsum-based.

The mass per unit area or surface density specifiedis a nominal minimum value in kilograms persquare metre (kg/m2): the use of a higher densityboard will increase the sound insulationperformance.

Boards should be abutted and all joints sealed withtape or caulked with sealant. Where two or morelayers of gypsum-based board are required onseparating walls or ceilings all joints should bestaggered, and only the outer layer boards need to be sealed with tape or caulked with sealant. The order in which boards are fitted and lapped isnot critical provided the overall mass per unit areais maintained. The same applies to combinedrender/plaster finishes.

Boards fitted to steel and timber frame separatingwalls should be mounted in accordance with themanufacturer’s instructions – some boards mayneed to be mounted horizontally.

Thermal laminate boards may be used as the wallfinish to masonry walls, provided the nominal massper unit area indicated in the robust detail ismaintained - seek advice from the manufacturer.

An acceptable alternative to caulking or sealing the joint between the wall and the ceiling is to use gypsum coving.

Void

Void VoidRoom-in-roof

Doublelayer

Singlelayer

Section through room-in-roof

Room-in-roof for masonry walls –requirements for gypsum-based boardsRoom-in-roof constructions are permitted inmasonry separating walls. Where the ceiling to theroom is directly beneath the roof structure, typicallythe sloping areas, two layers of gypsum-basedboard are required, as per the relevant room-in-roofdetail for the adopted separating wall. A singlelayer of gypsum-based board may be adopted inother areas.

Spandrel panels maybe used here




Building Regulations Part A (2004) –disproportionate collapse

Masonry constructionLateral restraint straps may be used at floorjunctions, roof level and other junctions, if necessaryto meet the requirements of Part A, provided they donot bridge the cavity separating wall leaves and thatno voids remain at the mortar joints.

Internal walls (minimum massrequirements)

Junctions with cavity masonry separating walls• masonry internal walls where there is noseparating floor (e.g. houses) – no restrictions

• masonry internal walls where there is a separatingfloor (e.g. flats/apartments) – internal wall shouldhave a minimum mass per unit area of 120 kg/m2

(including the finish) OR at least that of theapproved flanking wall inner leaf, if this is less.

• timber frame and steel frame internal walls – no restrictions.

Junctions with timber and steel frame separating wallsNo minimum mass requirements.

Junctions with concrete or steel-concretecomposite separating floors• masonry internal walls – internal wall should havea minimum mass per unit area of 120 kg/m2


• timber frame and steel frame internal walls – no restrictions.

Junctions with timber or light steel separating floorsNo minimum mass requirements.

Junctions between internal partition wallsand concrete separating floorsThe junction between internal partition walls andconcrete separating floors should be formed asfollows:

1. Install internal lightweight stud partitions either upto the ceiling lining or through the ceiling lining,provided the head channel of metal stud partitionsor timber frame, as appropriate, fully seals the voidbetween the wall linings, such that there are no airpaths from the ceiling void to the partition void.

2. Install loadbearing masonry internal partitionwalls up to the underside of the floor, providedthe floor is continuous over the wall and the wallhas a minimum mass per unit area of 120kg/m2


Cavity masonry separating walls –staggered external (flanking) wall junctionAs an alternative to the junction shown in therobust detail, it is acceptable for the inner leafblockwork to extend to the inner face of theexternal wall cavity, as shown below.

Roof junctions – thermal insulationAdditional layers of thermal insulation may beadded as follows:

Masonry cavity separatingwall continuous to undersideof roof covering

Junction between separating walland roof filled with flexible closer

Continuoushorizontalribbon ofadhesive

Inner leaf (refer to robust detail)


Masonry outer leaf

Separating wall leaf (refer to robust detail)

100mm (min) mineral wool insulation minimum density 10 kg/m3 or 60mm (min) foil faced PUR or PIRinsulation, minimum density 30 kg/m3

Thermal insulation layer

Two layers of nominal 8 kg/m2

gypsum-based board


robustdetails7



3. Construct the internal wall directly off core floorwith the floating floor treatment (FFT) or screedinstalled around the internal walls, provided:

• the 5mm (min) resilient flanking strip orisolating edge strip, as appropriate for therobust detail adopted, is correctly installed toall perimeters of the FFT or screed to isolatethe floor from all the walls and skirtings

4. Construct the internal wall off the floating floortreatment flooring board or screed, provided:

• the floating floor treatment is installed inaccordance with the manufacturer’sinstructions, including the provision ofadditional battens to support the internal wallsif necessary

Subfloor ventilationWhere possible it would be preferable to avoidproviding ventilation for the sub floor void throughthe separating walls.

However, where necessary, the ventilation of thesub floor void of Part E Robust Detail separatingwalls may be achieved through the installation ofducts through the separating wall, provided:

• the top of the duct is at least 300mm below thefinished floor surface of the ground floorstructure

• the number of ducts passing through theseparating wall is kept to the minimumnecessary.

Radon and methane barriersIt is acceptable to install a radon or methanebarrier and comply with the robust details. Theground floor junction detail would need to followthat described in the robust detail and as such the225mm (min) clear cavity indicated in the groundfloor junction to masonry separating walls wouldneed to be maintained. Alternatively, refer toAppendix A2.

Ground floor junctions5mm (min) flanking strips are recommended to isolate floating floor finishes, where provided,from walls and skirtings.

Screed thicknessThe screed thickness stated is the minimumthickness at any point and a greater thicknessshould be specified to take account of deviations in the finished levels of the surfaces of bases andany reinforcement provided.

Cement:sand screed should be at least 50mm tocomply with BS 8204. Concrete screed is acceptable.

Precast concrete plank separating floorswith steel beamsIn some situations precast concrete planks mayrequire intermediate support by steel beamssupported on masonry.

• cavity masonry separating walls must not bebuilt off steel beams – where necessary, externalcavity walls may be built off steel beams

• all voids between the steel beam and the slabsshould be fully filled with grout or concrete, and

• the supports for the ceiling treatment and theceiling lining should not come into contact withthe steel beam, and

• the depth of the ceiling void from the undersideof the plank should be as shown in the followingdiagrams and in accordance with thecorresponding separating floor robust detail

• mineral wool quilt should be provided if shown in the following diagrams

25mm (min) mineral woolquilt (min 10 kg/m3)

mineral wool quilt(min 10 kg/m3)




Separating walls should not be constructed offsteel beams.

Services in separating floors

Downlighters or recessed lightingWhere possible, downlighters or recessed lightingshould not be built into the separating floor. If theymust be built in, they should be kept to a minimumand the guidance included in the robust detailfollowed. For timber separating floors, seeAppendix F also.


Other servicesElectrical and plumbing services may be installed in the separating floor. All penetrations through the ceiling lining, floor decking and flooring boardshould be cut carefully. The gap around the serviceshould be carefully sealed with flexible sealant.

Where services are installed within a floating floortreatment, the manufacturer’s instructions shouldbe followed. It is acceptable to leave a gap of up to 50mm in the batten to allow services to cross at right angles.

Ducts for extract ventilation, etc. may run within the separating floor, provided the acoustic integrityis maintained.

Ducting which drops from the ceiling void needs to be enclosed in boxing of gypsum-based boardof the same composition and mass per unit area as the relevant robust detail ceiling treatment.

It is permissible to install services within the screedof concrete floors, provided that:

• the minimum thickness and mass per unit areaof the screed is maintained as detailed in therelevant robust detail

• the minimum cover on services is maintained

• the services do not break into or bridge theresilient layer(s). In the case of floors which alsohave a floating timber floor treatment (FFT), it ispermissible for services to rise vertically out ofthe screed and through the FFT, provided theFFT flooring boards do not touch the servicesand the gaps around the services are sealed witha flexible sealant.

Services may be installed within a secondaryceiling lining system that is only supported from the resilient bars of a ceiling treatment, provided:

• the resilient bars can support the full load;

• the resilient bars achieve the minimum laboratoryperformance of Appendix E.

Particular attention should also be paid to BuildingRegulations Part B – Fire Safety. Secondaryceilings to timber floors may also be supported byperimeter channels.

Underfloor heating systems in separatingfloors

With timber floating floor treatmentsUnderfloor heating may be used with timber floatingfloor treatments FFT1, FFT2 and FFT3. Underfloorheating may not be used with FFT4 or FFT5.

Where underfloor heating is supported by mineralwool or foil-wrapped quilt, this may be used inplace of the mineral wool that is specified betweenthe battens on certain floors. Where underfloorheating is supported on rigid insulation (e.g.polystyrene), this may be used in addition to themineral wool specified on certain floors. If thisresults in the batten void being filled, a polythenelayer should be included to prevent direct contactwith the underside of the floating deck. On floorswhere no mineral wool is specified, rigid insulationmay be used alone, provided it does not bridge theresilient layer by providing a connection betweenthe structural floor and any of the floating elements.

With floating screed floorsIf underfloor heating systems are required to beinstalled within the screed they must not penetratethrough the resilient layers and must avoid bridgingthe screed to the slab. Where rigid insulation

External wall

Grout or concrete

Fill void betweenbeams with mineralwool batts 33 kg/m3

(min)

Insert 50mm (min) mineral wool 10 kg/m3 (min)

Box with two layers of 8 kg/m2

gypsum-based board for each layer

An alternative detail where two steel beams arerequired to support the external cavity wall is asfollows:

FLAT BALCONY

Nominal 12.5 kg/m2

gypsum-basedboard

Pack around beamwith mineral woolquilt (min 10 kg/m3)


robustdetails9



• any specific guidelines, regarding the installationof such finishes, stipulated by the manufacturerof the FFT system are strictly followed;

• the laminate timber floor finish does not bypassthe isolation provided by the flanking strips atthe perimeters of the FFT by being in directcontact with the wall or skirting;

In the case of the Part E Robust Details withfloating screed, it would also be acceptable inprinciple to provide a laminate timber floor finish,provided:

• the laminate timber floor finish does not bypassthe isolation provided by the isolating edge stripsat the perimeters of the screed by being in directcontact with the wall or skirting;

Screed floating floor treatmentsWhere screeds are separated from the core floor by resilient layers the screed must be fully isolatedfrom the floor slabs, perimeter walls and skirtingsand must not come into direct contact with theseareas. The resilient layer(s) should completely coverthe core floor surface and be wrapped round theedge of the screed to isolate the screed from theperimeter walls and skirtings.

Masonry angle supportsThe masonry outer leaf of external walls used withrobust details concrete or steel-concrete compositeseparating floors, may be supported on suitableproprietary masonry angle supports that are fixedto the edge of the separating floors.

Full height glazing units junction withrobust details separating floorIf referred to in the detail, full height glazing unitsmay be used. Where there is no inner leaf and a fullheight glazing unit, the core floor slab must break the vertical continuity of the glazing facade, as shown below.

boards are used which have surface indents for the heating conduits to be situated within, this is acceptable. For floors that incorporate aninsulation layer, such indented boards may be usedas part of the resilient layers, provided they are ofan appropriate type of material, and that theminimum thickness of the resilient layer ismaintained.

Resilient bars When using resilient bars the specifier shouldensure that the resilient bar manufacturer has alaboratory sound test report (as outlined inAppendix E) that demonstrates compliance withthe robust details performance criteria.

Timber floating floor treatmentsWhen using timber floating floor treatments (e.g.battens, cradles, platforms) the specifier shouldensure that the floating floor treatment manufacturerhas a laboratory sound test report (as outlined inAppendix C or D) that demonstrates compliancewith robust details performance criteria.

It may be necessary for battens to be installed at closer centres or for additional support to beprovided under heavy loads from internal walls,sanitary ware and kitchen units, etc. in accordancewith the manufacturer's instructions.

Rigid insulation boards (e.g. expanded, extruded or bead polystyrene) are not acceptable for use as the resilient layer or as a flanking strip with afloating floor treatment where the walking surface is board based.

Mineral wool may not be used as a resilientflanking strip. See Appendix B, Glossary, fordefinition of a resilient flanking strip.

Floating Floor Treatments in kitchens andbathroomsIt is permissible to install kitchen units andappliances along with bathroom sanitary fittingsdirectly onto the sub floor construction. In all casesit is recommended that you contact themanufacturer directly to seek their advice relatingto the specific FFT.

Laminated or ceramic flooring onseparating floorsIn principle it is acceptable to install laminatetimber floor finishes on top of the timber floatingfloor treatments (FFT’s) indicated in Part E RobustDetails, provided:

• the manufacturer of the FFT system confirmsthat the performance of the FFT will not beaffected;




Specification requirementsWhere details have “minimum” in their specification,it indicates that the value should not be lower than that stated. It does not preclude the use of higher values.

For example, where a 75mm (min) cavity size is specified, it does not preclude the use of widercavities. Similarly, a reference to a wall finish with 8 kg/m2 gypsum-based board does notpreclude the use of boards with a greater mass per unit area.

Lifting holes in cassette floorsThe required acoustic performance of any of therobust detail timber or steel frame separating floorswould not be affected if lifting holes within the sub-deck remain untreated, provided:

• each lifting hole is no larger than 120mm indiameter

• mineral wool quilt, of the appropriatespecification as indicated in the relevantseparating floor specification, is providedcovering the whole area of the floor, between thejoists/battens, in both the structural floor voidand the floating floor void

• all other relevant requirements are strictlyfollowed.

Lifting holes that are larger than 120mm in diametershould be sealed or covered with a board or panelof similar or greater density than the sub-deckboard.


robustdetails1

Appendix A2 – Proprietary Flanking Conditions


Contents

Section Page

Icopal-MONARFLOOR® BRIDGESTOP®

System for robust details cavity masonry walls 2Smartroof complete Interlocking “room-in-roof” panel system using robust details timber or masonry cavity walls 3Kingspan TEK inner leaf flanking condition for robust details timber separating walls 4Prestoplan PresPeak 60 interlocking singlespandrel panel system for robust details timber separating walls 5


robustdetails 2 Edition 3April 2011 Update

Appendix A2 – Proprietary Flanking ConditionsAppendix A

1

Key

1 500mm wide (or 250mm where shown)MONARFLOOR® BRIDGESTOP® 3mm HPAcoustic Membrane laid under the party wall overthe dpm. This is an integral part of the system.

2 MONARFLOOR® BRIDGESTOP® Quilt in two liftsto prevent mortar droppings touching bothmasonry leaves.

3 MONARFLOOR® BRIDGESTOP® Tie to penetrateat max 450mm centres. Ties are reversible. Mayalso be used as render depth marker.

4 MONARFLOOR® 6mm Acoustic Angled FlankingStrip to isolate screed/insulation from party walland to isolate skirting board from screed.

5 Continuous dpm over the raft where ground gassesare an issue. Contact Icopal for specification.

1. Separating wall – direct support on raft

Icopal-MONARFLOOR® BRIDGESTOP® System for robust details cavity masonry walls.Refer to Table 6 in Introduction.

2

3

4

a

b

c

a Min 100mm lightweight or dense aggregateblock (with appropriate Type A wall ties)dependent on Robust Detail being used.

b Min 75mm or 100mm cavity width dependent onRobust Detail being used.

c Wall finish dependent on Robust Detail used.

d Floating screed on insulation; or timber floatingfloor types FFT2 resilient cradle and batten, FFT3resilient batten, or FFT4 deep platform system.

e Insitu concrete 365kg/m2 (min) mass per unit area.

1

1

2

3

a

b

c

a

b

2

3

a

b

5 5

2

3

250mm

250mm

4

1

2. Separating wall – suspended floor with gasmembrane

3. Insulated raft foundation 4. Stepped foundation

d d

150mm (min)

c

c

Contact details for Icopal-MONARFLOOR®:

Telephone: 0161 866 6540Fax: 0161 865 8433E-mail: [email protected]

BRIDGESTOP® is the subject of Patent Application ref GB2429719The trade marks MONARFLOOR and BRIDGESTOP are the subjectof UK trade mark registrations owned by Icopal Limited

e

e

e


robustdetails3



Appendix ASmartroof complete interlocking “room-in-roof” panel system using robust details timberor masonry cavity walls. Refer to Table 6 in Introduction.

Key

1 Smartroof panel.

2 Smartroof thin-joint compressed foam to take upunevenness in blockwork.

3 Smarttongue 35 x 72mm.

4 Smartchannel.

5 Smartroof roof panel.

1. Gable flanking junction – masonry

a Outer leaf of external wall.

b Continue cavity batts up to gable end if required.

c Minimum 100mm blockwork.

d Timber frame inner leaf.

e Cavity closer.

f Gypsum-based board dependent on RobustDetail being used.

g Gypsum-based board nominal 8 kg/m2. 2 layersrequired where separating floors are used (referto Robust Detail separating floor).

h Nominal 8mm render coat (refer to relevantRobust Detail separating wall).

i Vertical metal straps at 1200mm centres if required.

j 35 x 50mm counterbatten.

k 2 layers gypsum-based board total nominal 22 kg/m2.

3. Gable flanking junction – timber frame

2. Room-in-roof junction with masonry cavity walls

4. Room-in-roof junction with timber frame cavity walls

5. Separating wall – roof junction

1

2

1 3

4

5

a

b

c c

i

f

e

g

d

ak

d

e

j

e

Min 75mm

Min 50mm

Contact details for smartroof Limited:

Telephone: 01675 44 23 45Fax: 01675 44 30 95E-mail: [email protected]: www.smartroof.co.uk

1

fh

1 1

i


robustdetails 4 Edition 3October 2010 Update


Key

1 Kingspan TEK – 142 Panel.

2 Service void (if required).

3 One layer of gypsum-based board nominal 8 kg/m2 on inner leaf where there is noseparating floor, e.g. for houses.

Two layers of gypsum-based board nominal 8 kg/m2 each on inner leaf where there is aseparating floor (non-RD floor), e.g. for flats andapartments.

4 Approved fixings to TEK BBA Cert No. 02/S029.


Kingspan TEK inner leaf flanking condition for robust details timber separating walls.Refer to Table 6 in Introduction. Currently when used with separating floors inapartments, separating floors will require pre-completion testing.

a Masonry outer leaf (min 100mm thick).

b External wall cavity (min 50mm).

c Robust Details timber frame separating wall.(Refer to Table 6 in Introduction and relevanttimber frame robust details in Handbook).

d Close cavity with flexible cavity stop (see Appendix A).

e Seal all joints with tape or caulk with sealant.


Contact details for Kingspan TEK, Kingspan Insulation Limited:

Telephone: 01544 387382Fax: 01544 387482E-mail: [email protected]: www.tek.kingspan.com

1

2

3

4

a

b

cde

1

2

3

4

a

b

c

d e4


robustdetails5



Prestoplan PresPeak 60 interlocking single spandrel panel system for use on robustdetails timber separating walls in non room-in-roof situations. Refer to Table 6 in Introduction.

1. Spandrel panel located parallel to trussed rafters 2. Spandrel panel located across trussed rafters

Key

1 PresPeak 60 spandrel panels.

a Firestop wired mineral wool closer.

b Flexible cavity stop.

c Timber frame separating wall.

d Site-fixed rafter extension.

e Continuous blocking between bottom chords oftrusses.

f Bottom chord extended for support.

g Intumescent tape.

Contact details for Prestoplan Limited:

Telephone: 01772 627373Fax: 01772 627575Web: www.prestoplan.co.uk

3. Spandrel panel joint detail

60mm between truss timbers

Refer also to manufacturer’s guidance

a

d

1

e

b

c

Section

Section

Plan

1

b

c

a

1

1g

gTop chord detail Bottom chord detail

Plan

Elevation

Elevation

d f


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robustdetails1

Appendix A3 – Specific Proprietary Products


Contents

Section Page

British Gypsum GypFloor SB floating floor treatment for robust details concrete separating floors 2Insumate Limited insulation support trayfor robust details timber joist separating floors 3

Appendix A3_Appendix-Jan2005 25/06/2010 15:12 Page 1

robustdetails 2 Edition 3July 2010 Update

Appendix A3 – Specific Proprietary ProductsBritish Gypsum GypFloor SB floating floor treatment for robust details concreteseparating floors. Refer to Table 7 in Introduction.

Key

1 British Gypsum 70 SB 65 steel batten.

2 British Gypsum 50 SB 65 steel batten.

a Robust Detail concrete separating floor.

b 18mm (min) t&g flooring board.

Contact details for British Gypsum Limited:

Telephone: 08705 456 123Fax: 08705 456 356E-mail: [email protected]: www.british-gypsum.com

Note: The robust details separating floor mayrequire a levelling screed. Please refer to therelevant floor details in the Handbook.

This system must be installed in accordance withthe manufacturer’s instructions.

Gypframe GypFloor SB flanking strip SB3 must beapplied around the perimeter of the flooring boardto isolate floor from walls and skirting.

For further guidance on floating floor treatmentsand flanking strips, please refer to Appendix A1.

Floating floor treatment 1 – 70mm

Floating floor treatment 2 – 50mm

2

b

1

b

a

a


robustdetails3



Insumate insulation support tray for robust details timber joist separating floors.Refer to Table 7 in Introduction and the relevant robust details for acceptable joist types.

Key

1 Insumate insulation support tray.

a Floating floor treatment.

b Floor sub-deck.

c Absorbent material.

d Floor joist – Refer also to Table 7 in Introduction.

e Ceiling treatment.

(For specification of items a to e, refer to therelevant robust detail)

Note

Ensure absorbent material ‘c’ is fitted between alljoists, and also between the final joist and theperimeter blocking.

Insumate must be installed in accordance with themanufacturer’s instructions.

Contact details for Insumate Limited:

Telephone: 01768 398 991Fax: 01768 398 991E-mail: [email protected]: www.insumateltd.com

a

b

c

d

e

1

Option 1 Option 2Insumate trays may be inverted

a

b

c

d

e

11

a

b

c

d

e


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robustdetails1 of 2

Appendix B


The definitions given below are for the purposes of this document only and are not intended to be rigorous.

AbsorptionConversion of sound energy into heat, often by the use of a porous material.

Absorbent material Material that absorbs sound energy.

Airborne soundSound propagating through the air, often linked to noise sources such as speech and television.

Airborne sound insulationSound insulation that reduces the transmission of airborne sound between adjoining dwellings or parts of adjoining dwellings.

Block thicknessThe block thickness quoted is the work size.Permissible manufacturing tolerances are given in BS 6073.

Built in insulationInsulation batts built in during construction (notpumped or blown material).

Cavity stop A proprietary product or material such as mineralwool (fibre) used to close the gap in a cavity wall.

Composite resilient battenA timber batten which is composed of a timberbatten with a prebonded resilient material toprovide isolation between the flooring surfacelayers and floor base.

Cradle/SaddleAn intermediate support system (with a resilientlayer base) which uses levelling packer pieces to support a timber batten, isolating it from thefloor base.

CtrSpectrum adaptation term (No.2) from BS EN ISO717-1 to take account of a specific sound spectra(which are predominantly low frequency based).

Decibel (dB)The unit used for different acoustic quantities toindicate the level with respect to a reference level.

Density (kg/m3)Mass per unit volume, expressed in kilograms percubic metre (kg/m3).

Direct transmissionSound which is transmitted only through the main separating element and involves no otherflanking element.

DnTStandardised level difference. The difference insound level between a pair of rooms (source andreceiving rooms), for a stated frequency, which iscorrected (normalised) for the reverberation time (inthe receiving room). See BS EN ISO 140-4.

DnT,wWeighted standardised level difference. A single-number quantity (weighted) which characterises the airborne sound insulation between two rooms.See BS EN ISO 717-1.

DnT,w + CtrWeighted standardised level difference whichcharacterises the airborne sound insulationbetween two rooms using spectrum adaptationterm (No.2) from BS EN ISO 717-1.

Flanking element (e.g. flanking wall) Any building element that contributes to theairborne sound or impact transmission betweenrooms in a building which is not the directseparating element (i.e. not the separating wall or separating floor).

Flanking strip or edge stripA 5mm (min) resilient strip which is located at theperimeter of a floor to isolate the floor surface layerfrom the perimeter walls and skirtings. A typicalexample of a flanking strip is 5mm (min) foamedpolyethylene. Rigid boards, (such as extruded,expanded or bead polystyrene) or mineral woolbased products may not be used as a flanking stripwhere the walking surface is board based.

For screed floating floors the permitted flankingstrip or edge strip detail will be dependant on theresilient layer system adopted and the relevantrobust detail must be strictly followed.

Flanking transmissionAirborne sound or impact transmission betweenrooms which is transmitted via flanking elementsand/or flanking elements in conjunction with themain separating elements.

Flexible closerA flexible cavity stop or cavity barrier which sealsthe air path in cavities linking adjoining dwellings.

Glossary

Appendix B 10/9/09 12:02 Page 1


Appendix B

Floating floor treatmentA timber floating floor system which may usebattens, cradles or platform base; all of which usea resilient layer to provide isolation from the basefloor and adjacent wall elements.

Flooring boardThe boards which form the top surface of the floor.Boards should be wood-based panels 600mm(min) wide.

Habitable roomFor the purposes of Part E robust details, habitablerooms are all rooms except the hall, staircase andlanding.

Internal wallA wall or partition which divides the dwelling spaceinto different functions but which does not provideseparation between different dwellings.

Internal floorA floor which divides the dwelling space intodifferent functions but which does not provideseparation between different dwellings.

L’nTStandardised impact sound pressure level. Theimpact sound pressure level in the receiving roomat a stated frequency, corrected (normalised) forthe reverberation time in the receiving room. SeeBS EN ISO 140-7.

L’nT,wWeighted standardised impact sound pressurelevel. A single-number quantity (weighted) tocharacterise the impact sound insulation of floors.See BS EN ISO 140-7.

Mass per unit area (or surface density)Mass per unit area is expressed in kilograms persquare metre (kg/m2).

Mineral woolA rock or glass based mineral material which canbe manufactured in a quilt form or batt (more rigid) form.

Nominal density of gypsum-based boardThe density stated in the robust detail with atolerance of up to -0.3 kg/m2 per layer.

Proprietary screedA self-compacting floor screed, which achieves anominal mass per unit area of 80 kg/m2 as laid,without the requirement for manual or mechanicalcompacting.

rd∆LwThis is specific to Robust Details performancerequirements and is the difference in weightingbetween two floor impact tests undertaken in an acoustic test laboratory. This should not beconfused with the Approved Document E ∆Lwusing ISO 140-8.

rd∆Rw+CtrThis is specific to Robust Details performancerequirements and is the difference in weightingbetween two floor airborne tests undertaken in an acoustic test laboratory.

Rip linerSmall section of wall lining material or any boardmaterial fitted in advance of the main wall lining toallow the installation of the floating floor treatment.This does not necessarily need to be the samethickness as the wall lining material.

Particular attention should also be paid to BuildingRegulations Part B – Fire Safety.

RwA single-number quantity (weighted) whichcharacterises the airborne sound insulation of abuilding element from measurements undertaken in an acoustic test laboratory. See BS EN ISO 717-1.

Robust DetailA robust detail for Part E of the BuildingRegulations has been given the status of RDfollowing a minimum of 30 “field tests” where therecorded mean performance was 5dB better thanthe sound insulation requirements as described inApproved Document E for new build separatingwalls and floors.

Sealant (acoustic or flexible)A gun-applied sealant which has resilience andforms a non-rigid caulking.

Separating floorA floor that separates adjoining dwellings.

Separating wallA wall that separates adjoining dwellings.

Spandrel panelAn element manufactured to divide or close off theprofile in the roof space.

t&gTongue and groove edged jointing of flooringboards (bonded lapped joints are also acceptable)

Appendix B 10/9/09 12:02 Page 2

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Appendix C

Edition 3April 2007

To determine the acoustic performance of floatingfloor treatments on robust detail timber separatingfloors airborne and impact measurements shouldbe undertaken in an acoustic test laboratory. Thefollowing test procedure may be used for RD timberseparating floors with floating floor treatments. Thefollowing sections C.1 to C.4 outline themeasurement and performance rating criteria.

C.1 Test Laboratory RequirementsThe test facility must have UKAS Accreditation (or EC equivalent) for the measurement of soundinsulation in the laboratory, for both airborne soundinsulation and impact sound transmission. The testmeasurement should be undertaken in accordancewith BS EN IS0 140-3, BS EN ISO 140-6 and theperformance of each measurement rated inaccordance with BS EN ISO 717 (Parts 1 & 2). Themeasurements should be undertaken in a laboratorywith suppressed flanking transmission and inaccordance with BS EN IS0 140-1 and BS EN IS0140-2.

The R’max value of the laboratory test facility shallbe at least 10 dB greater than the sound insulationvalue of the structure under test.

C.2 Core (or base) Timber Floor andFloating Floor TreatmentTesting should be undertaken on a core (or base)floor which consists of the following constructionspecification:

Floor Decking 15mm OSB timber decking board(or equivalent timber based board)with mass per unit area of 10-11 kg/m2

Joists 235mm x 50mm solid timber joistsC16 grade timber

Insulation 100mm glass based mineral wool insulation with a density of 10-11 kg/m3

Ceiling Two layers of 12.5mm gypsum-based board with a mass per unitarea for each layer of 8-8.5 kg/m2.

The timber joists should be mounted on joisthangers at 450mm centres and the 100mm (deep)glass based mineral wool insulation should beplaced in the cavities between the joists and alsobetween cavities formed between the joists and the test aperture border. The floor decking shouldbe mounted on the timber joists with screws at300mm centres. All junctions between the floorsurface perimeter and test aperture should besealed with a flexible or acoustic sealant.

The ceiling layers should be mounted with jointsstaggered and the first layer (inner layer) should befixed to the underside of the joists with screws, at300mm centres within the field of the boards andat 150mm centres at the board ends. The secondlayer (outer layer) should be fixed with screws, at230mm centres within the field of the boards andat 150mm centres at the board ends. The perimeterof the ceiling should be sealed with flexible oracoustic mastic sealant and all joints andscrewheads taped with self-adhesive tape

Floating Floor TreatmentThe floating floor treatment should cover the entiretest area of the core floor surface and should beconstructed in accordance with the manufacturer'sinstructions. All robust detail floating floortreatments require a flanking strip to isolate theedge of the floorboard from the perimeter walls. Assuch the manufacturer should also use the flankingstrip, which they would normally use on site, in thelaboratory measurements.

C.3 Testing RequiredFor the purposes of evaluating the performance ofa floating floor treatment for robust details involvingtimber separating floors four differentmeasurements are required (2 airborne and 2impact measurements). The followingmeasurements are required:

AirborneTest 1 Determination of Rw+Ctr for the core (or

base) timber floor.

Test 2 Determination of Rw+Ctr for the core (orbase) timber floor with the floating floortreatment applied to the core floor surface.

ImpactTest 3 Determination of Ln,w for the core (or base)

timber floor.

Test 4 Determination of Ln,w for the core (or base)timber floor with the floating floor treatmentapplied to the core floor surface.

Laboratory Test Core Floor Construction

Determination of the acoustic performance requirements for floatingfloor treatments used with RD timber separating floors

Appendix BCDE 29/8/08 16:05 Page 3


Appendix C

C.4 Expression of PerformanceThe airborne sound insulation performance of thefloating floor treatment should be expressed as theimprovement in airborne sound insulation(rd∆Rw+Ctr) as a result of the application of thefloating floor treatment to the core floor (rd∆Rw+Ctr= Test 2 - Test 1).

The impact sound transmission performance of thefloating floor treatment should be expressed as thereduction in impact sound transmission (rd∆Lw) asa result of the application of the floating floortreatment to the core floor (rd∆Lw = Test 3 - Test 4).


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Appendix D

Edition 3April 2007

To determine the acoustic performance of floatingfloor treatments on robust detail concrete separatingfloors airborne and impact measurements shouldbe undertaken in an acoustic test laboratory. Thefollowing test procedure may be used for RDconcrete and steel-concrete composite separatingfloors with floating floor treatments. The followingsections D.1 to D.4 outline the measurement andperformance rating criteria.

D.1 Test Laboratory RequirementsThe test facility must have UKAS Accreditation (orEC equivalent) for the measurement of soundinsulation in the laboratory for impact soundtransmission. The test measurement should beundertaken in accordance with BS EN IS0 140-6and the performance of each measurement rated in accordance with BS EN ISO 717-2. Themeasurements should be undertaken in a laboratorywith suppressed flanking transmission and inaccordance with BS EN ISO 140-1 and BS EN IS0 140-2.


D.2 Core (or base) Concrete Floor andFloating Floor TreatmentsTesting should be undertaken on a core (or base)floor which consists of the following constructionspecification:

Levelling 10mm (min) - 25mm (max) Screed levelling screed using proprietary

cement based screed with bondingagent. ‘Rapidry Formula’ screeds may be used.

Precast plank 150mm deep hollow-core precastconcrete plank of mass per unitarea 295-305 kg/m2. The hollowsegments of the precast plankshould be located at regularcentres and should be distributedover a minimum of 80% of theplank width.

The precast concrete hollow-core planks should bemounted in the test aperture to cover the entire testaperture area. The planks should be tightly abuttedand all joints should be filled with grout includingtop and bottom joints. No voids should remain atthe floor perimeter junction with the test apertureborder. The levelling screed should be applied suchthat it is directly bonded to the entire floor surfaceof the planks. No ceiling treatments are permittedand no additional ceiling layers should be applied.

Floating Floor TreatmentThe floating floor treatment should cover the entiretest area of the core floor surface and should beconstructed in accordance with the manufacturer'sinstructions. All robust detail floating floortreatments require a flanking strip to isolate theedge of the flooring board from the perimeter walls.As such the manufacturer should also use theflanking strip, which they would normally use onsite, in the laboratory measurements.

D.3 Testing RequiredFor the purposes of evaluating the performance ofa floating floor treatment for RD concrete and steel-concrete composite separating floors, two differentimpact measurements are required. The followingmeasurements are required:

ImpactTest 1 Determination of Ln,w for the core (or base)

concrete floor.

Test 2 Determination of Ln,w for the core (or base)concrete floor with the floating floortreatment applied to the core floor surface.

D.4 Expression of PerformanceThe impact sound transmission performance of thefloating floor treatment should be expressed as thereduction in impact sound transmission (rd∆Lw) asa result of the application of the floating floortreatment to the core floor (rd∆Lw = Test 1 - Test 2).

D.5 Replacement ProductsA new replacement product may be benchmarktested using an ISO 140-8 laboratory test core flooras an alternative to the laboratory test core floorindicated above, provided:

• the ISO 140-8 floor structure is 140mm thick±5mm tolerances

• the original product has been successfully testedin accordance with Appendix D of the RobustDetails Part E Handbook using the laboratorytest core floor specified in Appendix D

Laboratory Test Core Floor Construction

Determination of the acoustic performance requirements for floatingfloor treatments used with RD concrete and steel-concretecomposite separating floors



Appendix D

• the proposed product is a direct replacement forthe original product

• both the original product and the proposedproduct are tested on the same ISO 140-8laboratory test core floor structure to providecomparative test data

• the results of the comparative test data confirmthat there is no loss in performance between theproposed product and the original product, whentested on the ISO 140-8 floor

• the details of the proposals, complete with thecomparative test data, are submitted to RobustDetails Ltd for approval

• Robust Details Ltd provide written confirmationof such approval.


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Appendix E

Edition 3April 2007

To determine the acoustic performance of resilientbars for use within robust detail separating floorsairborne and impact measurements should beundertaken in an acoustic test laboratory. Theperformance of the resilient bars is calculated from the improvement in airborne and impactperformance by a ceiling connected via resilientbars as opposed to a direct fix ceiling. The ceilinglinings should be identical in both tests. Thefollowing sections E.1 to E.4 outline themeasurement and performance rating criteria.

E.1 Test Laboratory RequirementsThe test facility must have UKAS Accreditation (orEC equivalent) for the measurement of soundinsulation in the laboratory, for both airborne soundinsulation and impact sound transmission. The testmeasurement should be undertaken in accordancewith BS EN IS0 140-3, BS EN IS0 140-6 and theperformance of each measurement rated inaccordance with BS EN ISO 717 (Parts 1 & 2). Themeasurements should be undertaken in a laboratorywith suppressed flanking transmission and inaccordance with BS EN ISO 140-1 and BS EN ISO 140-2.


E.2 Direct Fix Ceiling versus Resilient BarCeilingTesting should be undertaken on a floor with adirect fix ceiling which consists of the followingconstruction specification:




Ceiling Two layers of gypsum-based boardwith an overall mass per unit areaof 23-25 kg/m2.

The timber joists should be mounted on joisthangers at 450mm centres and the 100mm (deep)glass based mineral wool insulation should beplaced in the cavities between the joists and alsobetween cavities formed between the joists and thetest aperture border. The floor decking should bemounted on the timber joists with screws at300mm centres. All junctions between the floorsurface perimeter and test aperture should besealed with a flexible or acoustic sealant.

The direct fix ceiling is composed of two layers ofgypsum-based board which have an overall massper unit area of 23-25 kg/m2 and have a minimumoverall thickness of 30mm. The ceiling layersshould be mounted with joints staggered and thefirst layer (inner layer) should be fixed to theunderside of the joists with screws, at 300mmcentres within the fields of the boards and 150mmcentres at the board ends, and the second layer(outer layer) should be fixed with screws, at 230mmcentres within the fields of the boards and at150mm centres at the board ends. The perimeter ofthe ceiling should be sealed with flexible oracoustic sealant and all joints and screwheadstaped with self-adhesive tape.

Laboratory Test Construction of Floor with Direct FixCeiling

Laboratory Test Construction of Floor with theCeiling Connected via Resilient Bars

The floor construction and materials used shouldbe identical to the Direct Fix test structure exceptthat the ceiling is only connected to the joists viathe resilient bars. The resilient bars should bedirectly connected to the joists at 400mm centresusing metal screws, mounted perpendicular to thejoist span and in accordance with themanufacturer's instructions. The gypsum-basedboard ceiling layers should be identical in theirmaterial properties to those used for the Direct Fixceiling.

Determination of the acoustic performance requirements forresilient bars used on ceilings



Appendix E

E.3 Testing RequiredFor the purposes of evaluating the performance ofresilient bars for robust details four differentmeasurements are required (2 airborne and 2impact measurements). The followingmeasurements are required:

AirborneTest 1 Determination of Rw+Ctr for the floor with a

direct fix ceiling.

Test 2 Determination of Rw+Ctr for the floor with aceiling connected with resilient bars.

ImpactTest 3 Determination of Ln,w for the floor with a

direct fix ceiling.

Test 4 Determination of Ln,w for the floor with aceiling connected with resilient bars.

E.4 Expression of PerformanceThe airborne sound insulation performance ofresilient bars should be expressed as theimprovement in airborne sound insulation(rd∆Rw+Ctr) as a result of the application of theresilient bar connected ceiling as opposed to thedirect fix ceiling (rd∆Rw+Ctr = Test 2 - Test 1).

The impact sound transmission performance ofresilient bars should be expressed as the reductionin impact sound transmission (rd∆ Lw) as a resultof the application of the resilient bar connectedceiling as opposed to the direct fix ceiling (rd∆Lw = Test 3 - Test 4).


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Appendix F


Determination of the Influence on the Acoustic Performance of RDLightweight Separating Floors due to the presence of Downlighters(Recessed Lighting)

To determine the influence on the acousticperformance due to the presence of downlightersfor use within Robust Detail lightweight separatingfloors airborne and impact measurements shouldbe undertaken in an acoustic test laboratory. Forthe purposes of RD separating floors the followingtest procedure may be used.

Note: This test method may also be used bymanufacturers to demonstrate whether they can exceed the spacing/area criteria which are specified in the robust detail specification sheets for the RD separating floors.

The influence on the acoustic performance of thefloor is calculated from airborne and impactmeasurements on a timber floor structure with andwithout downlighters present. The timber floorstructure must be identical in both sets of tests (for airborne and impact) except for the presence of the downlighters.

For downlighters to qualify for inclusion in RDlightweight separating floors, the difference inperformance with the downlighters present shouldbe no worse than 1dB for both airborne and impactmeasurements, when tested under the followingconditions. The following sections F.1 to F.4 outlinethe measurement and performance rating criteria.

F.1 Test Laboratory RequirementsThe test facility must have UKAS Accreditation (or EC equivalent) for the measurement of soundinsulation in the laboratory, for both airborne soundinsulation and impact sound transmission. The testmeasurement should be undertaken in accordancewith BS EN ISO 140-3, BS EN ISO 140-6 and theperformance of each measurement rated inaccordance with BS EN ISO 717 (Parts 1 & 2). Themeasurements should be undertaken in a laboratorywith suppressed flanking transmission and inaccordance with BS EN ISO 140-1 and BS EN ISO 140-2.

The R’max value of the laboratory test facility shall be at least 10dB greater than the sound insulationvalue of the structure under test.

F.2 Core Timber Floor (no downlighters) Testing should be undertaken on a floor with thefollowing construction specification:



Construction of Initial Timber Floor (nodownlighters)The timber joists should be mounted on joisthangers at 450mm centres and the 100mm (deep)glass based mineral wool insulation should beplaced in the cavities between the joists and alsobetween cavities formed between the joists and the test aperture border. The floor decking shouldbe mounted on the timber joists with screws at300mm centres. All junctions between the floorsurface perimeter and test aperture should besealed with a flexible or acoustic mastic sealant.

The direct fix ceiling is composed of two layers ofgypsum-based board which have an overall massper unit area of 23-25 kg/m2 and have a minimumoverall thickness of 30mm. The ceiling layersshould be mounted with joints staggered and thefirst layer (inner layer) should be fixed to theunderside of the joists with screws, at 300mmcentres within the fields of the boards and 150mmcentres at the board ends, and the second layer(outer layer) should be fixed with screws, at 230mmcentres within the fields of the boards and at150mm centres at the board ends. The perimeter of the ceiling should be sealed with flexible oracoustic mastic sealant and all joints andscrewheads taped with self adhesive tape.

Construction of Timber Floor with DownlightersThe floor construction and materials used shouldbe identical to the initial timber floor test structureexcept that downlighters have been installed intothe ceiling. The downlighters should be spaced at a minimum of 1 downlighter per 2m2 of ceiling areaand at not less than 0.75m spacings. (e.g. 10m2

of ceiling area equates to at least 5 downlighters).The test results must indicate the number per unitarea and the spacings used in the tests and, ifsuccessful manufacturers are expected to includethis information in their test reports and fittinginstructions.


Ceiling Two layers of gypsum-based boardwith an overall mass per unit areaof 23-25 kg/m2.

Appendix F 2008 29/8/08 16:07 Page 1


Appendix F

F.3 Testing RequiredFor the purposes of evaluating the influence on performance due to downlighters for RobustDetail lightweight separating floors, four differentmeasurements are required (2 airborne and 2 impact measurements). The followingmeasurements are required:

AirborneTest 1 Determination of Rw+Ctr for the initial

timber floor

Test 2 Determination of Rw+Ctr for the initialtimber floor plus downlighters

ImpactTest 3 Determination of Ln,w for the initial timber

floor.

Test 4 Determination of Ln,w for the initial timberfloor plus downlighters

F.4 Performance Required for RDLightweight Separating FloorsFor airborne sound insulation performance thedifference between Test 2 and Test 1 (Test 2 -Test 1)should be no worse than (-1dB)

For impact sound transmission performance thedifference between Test 3 and Test 4 (Test 3 -Test 4)should be no worse than (-1dB).

NOTE: Downlighters which qualify for the aboveperformance requirements must also be ofsuitable integrity to meet the appropriate Building Regulations for Fire.

Appendix F 2008 29/8/08 16:07 Page 2

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Appendix G


Determination of the acoustic performance for “bonded” resilientfloor coverings used with RD concrete separating floor E-FC-8.

To determine the acoustic performance of bondedresilient floor coverings on robust detail concreteseparating floors, impact measurements should beundertaken in an acoustic test laboratory. Thefollowing test procedure may be used for RDconcrete separating floor E-FC-8. The followingsections G.1 to G.4 outline the measurement andperformance rating criteria. For the purposes of thelaboratory test evaluation, the resilient floorcovering should not be bonded to the laboratoryheavyweight standard core floor.

G.1 Test Laboratory RequirementsThe test facility must have UKAS Accreditation (orEC equivalent) for the measurement of soundinsulation in the laboratory for impact soundtransmission. The measurements should beundertaken in a laboratory with suppressed flankingtransmission and in accordance with BS EN ISO 140-1 and BS EN IS0 140-2.

G.2 Core (or base) Concrete Floor andResilient Floor CoveringTesting should be undertaken on a BS EN ISO 140-8heavyweight standard floor which consists of thefollowing construction specification:

In-situ slab In-situ cast concrete slab 140mm thick ±5mm tolerances

The in-situ cast concrete slab should be mountedin the test aperture to cover the entire test aperturearea. No voids should remain at the floor perimeterjunction with the test aperture border.

Resilient Floor Covering

Polyethylene foams are not suitable as resilientfloor coverings.

The Resilient Floor Covering sample specimensshould be:

• the same size as each other

• sufficiently large to support the whole tappingmachine (including the tapping machinesupports/legs)

• at least 1200mm x 600mm

• laid onto the core floor surface in accordancewith the manufacturer's instructions.

G.3 Testing RequiredTests should be conducted using the methoddescribed in BS EN ISO 140-8 and theperformance of each measurement rated inaccordance with BS EN ISO 717-2.

For the purposes of evaluating the performance ofa bonded resilient floor covering used with RDconcrete separating floor E-FC-8, three differentimpact measurements are required as follows.

Impact

Test 1 Determination of Ln,w for the core (or base)concrete floor.

Test 2 Determination of Ln,w for the core (or base)concrete floor with the resilient floor covering applied to the core floor surface*.

Test 3 Determination of Ln,w for the core (or base)concrete floor with the resilient floor covering applied to the core floor and awood board layer† laid over the uppersurface.

* The resilient floor covering samples should betested as Category I (small specimens) - asSection 5.3.1.1 of ISO 140-8.

† The wood board layer should have a thicknessof 8mm (min) to 16mm (max), a density of600kg/m3 (±30 kg/m3) and be the same shapeand no larger than the resilient floor coversample, such that when laid over the resilientfloor cover sample it does not directly touchthe core floor surface. The wood board layershould be of suitable size to support the wholetapping machine.

G.4 Expression of PerformanceThe impact sound transmission performance of theresilient floor covering should be expressed inaccordance with BS EN ISO 140-8 and BS EN ISO717-2 as:

Result 1 reduction in impact sound transmission (∆Lw 17dB) as a result of the application ofthe resilient floor covering to the core floor

Result 2 reduction in impact sound transmission(rd∆Lw 17dB) as a result of the applicationof the wood board layer and resilient floorcovering to the core floor (where the woodlayer is on top of the resilient floor material).

G.5 Replacement ProductsAny replacement product will be regarded as a‘new product’ and will therefore have to be testedin full, in accordance with the requirements of thisAppendix G.

Appendix G 2008 17/11/08 11:45 Page 1

Part E Robust Details

Documents

Transcript of Part E Robust Details