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TECHNICAL APPROVALS FOR CONSTRUCTION

APPROVAL

INSPECTION

TESTING

CERTIFICATION

EcoTherm Insulation UK LtdHarvey RoadBurnt Mills Industrial EstateBasildonEssex SS13 1QJ

Tel: 01702 520166 Fax: 01702 420636

e-mail: [email protected]: www.ecotherm.co.uk

British Board of Agrment tel: 01923 665300Bucknalls Lane fax: 01923 665301Garston, Watford e-mail: [email protected] WD25 9BA website: www.bbacerts.co.uk2010

The BBA is a UKAS accredited certification body Number 113. The schedule of the current scope of accreditation for product certification is

available in pdf format via the UKAS link on the BBA website at www.bbacerts.co.uk

Readers are advised to check the validity and latest issue number of this Agrment Certificate by either referring to the BBA website or contacting the BBA direct.

ECOTHERM UNIVERSAL BOARDS

ECOTHERM ECO-VERSAL BOARD FOR USE IN PITCHED ROOF APPLICATIONS

PRODUCT SCOPE AND SUMMARY OF CERTIFICATE

This Certificate relates to EcoTherm Eco-Versal Board foruse in Pitched Roof Applications, a warm roof insulationsystem, using rigid urethane foam, faced on both sideswith aluminium foil for use in new and existing domesticand non-domestic buildings.

AGRMENT CERTIFICATION INCLUDES: factors relating to compliance with Building

Regulations where applicable

factors relating to additional non-regulatoryinformation where applicable

independently verified technical specification

assessment criteria and technical investigations

design considerations

installation guidance

regular surveillance of production

formal three-yearly review.KEY FACTORS ASSESSEDThermal performance the product has a thermal conductivity (90/90 value) of 0.023 Wm

1K1 and calculationsfor typical roof constructions indicate U values between 0.60 Wm2K1 and 0.17 Wm2K1 (see section 5).

Condensation the risk of interstitial condensation will be minimal under normal conditions of use (see section 6).

Behaviour in relation to fire the product will not contribute to the development stages of a fire or present a smokeor toxic hazard (see section 7).

Durability the product will have a life equivalent to that of the roof structure in which it is incorporated (see section 10).

Agrment Certificate

99/3569Product Sheet 1

The BBA has awarded this Agrment Certificate to the company named above for the product described herein.

This product has been assessed by the BBA as being fit for its intended use provided it is installed, used andmaintained as set out in this Certificate.

On behalf of the British Board of Agrment

Date of First issue: 30 April 2010 Chris Hunt Greg Cooper

Originally certificated on 3 February 1999 Head of Approvals Physics Chief Executive

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In the opinion of the BBA, EcoTherm Eco-Versal Board for use in Pitched Roof Applications, if used in accordancewith the provisions of this Certificate will meet or contribute to meeting the relevant requirements of the followingBuilding Regulations:

The Building Regulations 2000 (as amended) (England and Wales)

Requirement: C2(c) Resistance to moisture

Comment: The product can enable or contribute to enabling a roof to meet this Requirement. See sections 6.1 and6.5 of this Certificate.

Requirement: L1(a)(i) Conservation of fuel and power

Comment: The product can contribute to meeting this Requirement. See sections 5.3 to 5.6 of this Certificate.Requirement: Regulation 7 Materials and workmanship

Comment: The product is acceptable. See section 10 and the Installation part of this Certificate.

The Building (Scotland) Regulations 2004 (as amended)

Regulation: 8(1) Fitness and durability of materials and workmanship

Comment: The product can contribute to a construction meeting this Regulation. See section 10 and the Installationpart of this Certificate.

Regulation: 9 Building standards constructionStandard: 3.15 Condensation

Comment: When used in conjunction with an appropriate vapour control layer, the product will be unrestricted underthis Standard, with reference to clauses 3.15.1 (1)(2) and 3.15.4(1)(2). See sections 6.1 and 6.6 of thisCertificate.

Standard: 6.1(b) Carbon dioxide emissionsStandard: 6.2 Building insulation envelope

Comment: The product can contribute to satisfying clauses, or parts of 6.1.1(1), 6.1.2(2), 6.1.6(1), 6.2.1(1)(2), 6.2.3(1),6.2.4(1)(2), 6.2.5(1)(2) and 6.2.6(2) of these Standards. See sections 5.3 to 5.6 of this Certificate.

Regulation: 12 Building standards conversions

Comment: All comments given for this product under Regulation 9, also apply to this Regulation, with reference toclause 0.12.1(1) and Schedule 6(1).(1) Technical Handbook (Domestic).

(2) Technical Handbook (Non-Domestic).

The Building Regulations (Northern Ireland) 2000 (as amended)

Regulation: B2 Fitness of materials and workmanship

Comment: The product is acceptable. See section 10 and the Installation part of this Certificate.Regulation: C5 Condensation

Comment: Roofs incorporating the product can meet this Regulation. See section 6.1 of this Certificate.Regulation: F2(a)(i) Conservation measures

Comment: Roofs incorporating the product can satisfy or contribute to satisfying this Regulation. See sections 5.3 to5.6 of this Certificate.

Regulation: F3(2) Target carbon dioxide Emission Rate

Comment: Roofs incorporating the product can satisfy or contribute to satisfying this Regulation. See section 5.3 ofthis Certificate.

Construction (Design and Management) Regulations 2007Construction (Design and Management) Regulations (Northern Ireland) 2007

Information in this Certificate may assist the client, CDM co-ordinator, designer and contractors to address theirobligations under these Regulations.See sections: 2 Delivery and site handling (2.5), 3 General(3.4) and 11 General(11.2) of this Certificate.

Non-regulatory Information

NHBC Standards 2008NHBC accepts the use of EcoTherm Eco-Versal Board for use in Pitched Roof Applications, when installed and used in

accordance with this Certificate, in relation to NHBC Standards, Chapter 7.2 Pitched roofs.

Regulations

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Technical Specification

1 Description1.1 EcoTherm Eco-Versal Board for use in Pitched Roof Applications is a rigid urethane foam core board, producedaccording to EN 13165 : 2008, faced with aluminium foil/kraft/foil tri-laminate on both sides.

1.2 The nominal characteristics of the product are shown in Table 1.

Table 1 Nominal characteristics

Nominal characteristics

Length 2400 mm

Width 1200 mm

Thickness 25 mm to 200 mm

Core density 30 kgm3

Edge profile square

Compressive strength >140 kPa

Water vapour resistance >100 MNsg1

1.3 Ancillary products typically used with the board are:

vapour permeable roof tile underlay

nailable sarking clips aluminium tape

nails and treated battens.

1.4 Proprietary fixings approved by the BBA can be used with the product. Names and addresses of suppliers ofapproved fixings are available from the Certificate holder and from the BBA.

2 Delivery and site handling2.1 The product is delivered shrink-wrapped in polythene on non-returnable pallets, each pack including a labeldetailing the manufacturers trade name, product name, grade and the BBA identification mark incorporating thenumber of this Certificate.

2.2 Packs should be stored off the ground on a clean, level surface under cover to protect them from moisture and

mechanical damage.2.3 The product should not be stored in direct sunlight or in areas subjected to elevated temperatures.

2.4 Care must be exercised in handling the boards to avoid crushing the edges and corners.

2.5 The product must not be exposed to open flame or to other ignition sources.

2.6 Care must be taken to prevent contact with solvents.

Assessment and Technical Investigations

The following is a summary of the assessment and technical investigations carried out on EcoTherm Eco-Versal Boardfor use in Pitched Roof Applications.

Design Considerations3 General3.1 EcoTherm Eco-Versal Board for use in Pitched Roof Applications is satisfactory for use as a thermally-insulated,pitched roof/sarking system over, between, under, between and over and between and under roof rafters. The productis used in conjunction with a vapour-permeable roof tile underlay, treated timber counter battens and tiling battens intiled or slated pitched roofs designed and constructed in accordance with the relevant clauses of BS 5534 : 2003 fordwellings.

3.2 The product is for use in pitched roof constructions where the ceiling follows the pitch of the roof and encloses ahabitable space or where the ceiling is horizontal and encloses a loft space.

3.3 Vapour permeable roof tile underlays used in conjunction with the product must be the subject of a current BBA

Certificate and be used in accordance with, and within the limitations of, that Certificate.3.4 Detailing and jointing of the board should avoid cold bridging, gaps should be filled and flue pipes passingthrough the insulation should be suitably sleeved.

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3.5 If the product is to be installed flush with the internal face of the rafters, a minimum ventilated air space of 50 mmdepth may be required between the underside of the roof tile underlay and the upper face of the board, dependent onthe specification of roof tile underlay.

4 Practicability of installationThe product is designed to be installed by a competent person experienced with this type of product.

5 Thermal performance5.1 Calculations of thermal transmittance (U value) should be carried out in accordance with BS EN ISO 6946 :2007, BRE report Conventions for U-value calculations (BR 443 : 2006) using the products declared thermal

conductivity of 0.023 Wm2K1 and foil facing emissivity of 0.05.5.2 The U value of a completed roof will depend on the thickness of the insulation used, the extent and arrangementof timber bridging and the insulating value of other roof components/layers. Calculated U values for exampleconstructions are given in Tables 2(a) and 2(b).

Table 2(a) Examples of roof U values (1) over and between and between and under rafters

Insulation thickness(mm)

Over and between rafters(Wm2K1)

Between and under rafters(Wm2K1)

25+25 0.38 0.38

30+25 0.35 0.35

35+25 0.33 0.33

40+25 0.32 0.3250+25 0.29 0.29

60+25 0.26 0.26

70+25 0.24 0.24

80+25 0.23 0.22

90+25 0.21 0.21

100+25 0.20 0.20

110+25 0.19 0.19

120+25 0.18 0.18

Table 2(b) Examples of roof U values(1) over rafters

Insulation thickness(mm)

Over rafters(Wm2K1)

25 0.60

30 0.53

35 0.47

40 0.43

45 0.39

50 0.36

60 0.31

65 0.29

70 0.27

75 0.26

80 0.25

90 0.22

100 0.20

110 0.19

120 0.17

(1) Details of the construction: unventilated insulation between and over rafters

distance between the rafters: 400 mm rafters: 150 mm thick by 38 mm wide

counter battens: 38 mm thick by 38 mm wide

breathable membrane.

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5.3 When considering insulation requirements, designers should refer to the detailed guidance contained in thedocuments supporting the national Building Regulations. The U values shown in Table 1 indicate that the productcan contribute to enabling a roof to achieve typical design U values referred to in those supporting documents.

See Tables 3 and 4.

Table 3 Typical design U values for pitched roofs England and Wales, and Northern Ireland

Construction type U value(Wm2K1)

Notional mean in SAP and new dwellings 0.16

Limit mean for extensions, new and replacement elements 0.20Limit mean for renovated, retained elements and material change of use(1) or energy status(2)

0.20

Limit mean for domestic extensions(1) and new dwellings 0.25

Limit individual for domestic extensions(1) and new domestic 0.35

(1) Alternative or flexible approaches are given in relevant documents supporting the national Building Regulations.

(2) England and Wales only.

Table 4 Typical design U values for pitched roofs Scotland

Construction type U value(Wm2K1)

L imit mean for new dwellings simplif ied approach (al l fuel packages) and notional dwellings in SAP 0.16Limit mean for new domestic 0.20

Limit mean for conversions, extensions and alterations(1) 0.20

Limit individual element value 0.35

(1) Alternative or flexible approaches are given in relevant documents supporting the national Building Regulations.

New buildings5.4 Roofs with U values lower than (or the same as, for dwellings in Scotland) the relevant notional value specifiedin section 5.3 will contribute to a building meeting its Target Emission Rate. Roofs with higher U values will requireadditional energy saving measures in the building envelope and/or services.

5.5 The product can maintain, or contribute to maintaining, continuity of thermal insulation at junctions betweenexternal walls and other building elements. Example junction detail shown in Figure 1 will allow use of the defaultpsi values for Accredited Construction details in Target Emission Rate calculations to SAP 2005 The GovernmentsStandard Assessment Procedure for Energy Rating of Dwellings or the Simplified Building Energy Model(SBEM).Detailed guidance on this and on limiting heat loss by air filtration can be found in:

England and Wales Limiting thermal bridging and air leakage : Robust construction details for dwellings and similarbuildings TSO 2002 or Accredited Construction Details (version 1.0)

Scotland Accredited Construction Details (Scotland)Northern Ireland Accredited Construction Details (version 1.0).

Figure 1 Junctions between roofs and walls

sarking board

roofing membrane

vcl

30 minute fire resistingcavity barrier

ventilation gapequivalent to25 mm minimum

50 mm air gap

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Existing buildings

5.6 For existing buildings such as extensions and conversions, roofs will be acceptable where they do not exceed therelevant U values given in section 5.3 and junctions and openings comply with section 5.6 of BRE report (BR 262 :2002) Thermal insulation: avoiding risks.

6 CondensationInterstitial condensation

6.1 Roofs will adequately limit the risk of interstitial condensation when they are designed and constructed inaccordance with BS 5250 : 2002, Section 8.4 and Appendix D.

6.2 The risk of interstitial condensation is greatest when the building is drying out after construction. Guidance onpreventing condensation from this and other sources is given in BRE Digest 369 Interstitial condensation and fabricdegradation and BRE report (BR 262 : 2002) Thermal insulation : avoiding risks.

6.3 A vapour control layer should be used in conjunction with a suitable vapour permeable roof tile underlay whenused without a ventilated air space.

6.4 In all cases, where high vapour resistance roof tile underlays are used, ventilation to the air space should be inaccordance with the recommendation of BS 5250 : 2002 or relevant BBA Certificate for the roof tile underlay. Wheninstalled in conjunction with other insulation materials, the water vapour resistance and installation instructions of theadditional insulation should be taken into consideration.

Surface condensation

6.5 Roofs will adequately limit the risk of surface condensation when the thermal transmittance (U value) doesnot exceed 0.35 Wm2K1 at any point and the junctions with walls are designed in accordance with therelevant requirements of Limiting thermal bridging and air leakage : Robust construction details for dwellings and

similar buildings, TSO 2002 , or BRE Information Paper IP 1/06.

6.6 Roofs will adequately limit the risk of surface condensation when the thermal transmittance (U value) doesnot exceed 1.2 Wm2K1 at any point. Guidance may by obtained from BS 5250 : 2002, Section 8, andBRE report (BR 262 : 2002) Thermal insulation : avoiding risks.

7 Behaviour in relation to fire7.1 When installed between, under or over rafters the product will be contained between the roof and internal liningboard until one is destroyed. Therefore, the insulation will not contribute to the development stages of a fire or present asmoke or toxic hazard.

7.2 The product must not be carried over junctions between roofs and walls required to provide a minimum period offire resistance. The continuity of fire resistance must be maintained, for example as described in:

England and Wales Approved Document B Volume 1 Dwelling houses, paragraphs 5.11 and 5.12. ApprovedDocument B Volume 2 Buildings other than Dwelling houses, Diagram 30

Scotland Mandatory Standard 2.2, clauses 2.2.7(2) and 2.2.10(1)

(1) Technical Handbook (Domestic).


Northern Ireland Technical Booklet E, paragraph 3.21.

7.3 When tested for surface spread of flame to BS 476-7 : 1987, the product achieved a class 1 rating.

8 Proximity of flues and appliances

When the product is installed in close proximity to certain flue pipes and/or heat producing appliances, for buildingssubject to national Building Regulations the relevant provisions and guidance given below should be met:

England and Wales Approved Document J, paragraph 2.15Scotland Mandatory Standard 3.19, clauses 3.19.1(1) to 3.19.9(1)


Northern Ireland Technical Booklet L, paragraph 2.9.

9 MaintenanceAs the product is confined within the roof structure and it has suitable durability (see section 10), maintenance is notrequired.

10 Durability

The product will have a life equivalent to that of the roof structure in which it is incorporated.

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11 General11.1 Installation of EcoTherm Eco-Versal Board for use in Pitched Roof Applications must be in accordance with therelevant clauses of BS 5534 : 2003 and the Certificate holders instructions and can be carried out in all conditionsnormal to roof work.

11.2 The product is light to handle, but some handling difficulties may be experienced in windy conditions. Since theproduct will not support the weight of operatives, appropriate care must be taken during installation and tiling.

11.3 The product can be cut easily, but care must be taken to prevent damage, particularly on edges. Damagedboards should not be used; small areas of the damaged face may be repaired with self-adhesive aluminium foil tape.

11.4 Where the product is installed in traditional and timber-frame construction, cavity barriers at the junction ofexternal wall and roof space should be provided.

11.5 Roof tiles or slates are installed in accordance with the relevant clauses of BS 5534 : 2003.

12 ProcedureOver rafter insulation (single layer system) (see Figure 2)

Figure 2 Single-layer system

membrane

counter batten

rafters

plasterboardEcoTherm Eco-Versalboard over rafters

unvented cavity(50 mm minimum)

ttile/slate batten

tiles/slates

12.1 The boards are laid so that they cover the whole roof area with the joints staggered and lightly butted.

12.2 It is important to ensure a tight fit between boards, boards and rafters and other detailed elements. At ridges andverges, boards should be cut to achieve a tightly butted joint.

12.3 Boards are secured by minimum 50 mm by 25 mm counter battens placed above the insulation down the line ofeach rafter and fixed at minimum of 300 mm centres by nailing through the counter batten and insulation.

12.4 It is important to ensure a tight fit between boards, boards and rafters and other detailed elements. At ridges andverges, boards should be cut to achieve a close butt joint. Gaps, for example, at abutments, hips and penetrations,should be avoided.

12.5 Where gaps do occur in board joints, for example at ridges, eaves, abutments and unsupported board edges,these should be filled with expanding filler.

12.6 Roof tile underlay should be installed in the appropriate manner, ie fully supported or over counter battens,depending on the type of underlay and in accordance with the appropriate Agrment Certificate. The underlay shouldallow drainage of water over the fascia board and into the gutter at eaves. A continuous timber fillet to support theunderlay below the lowest row of tiles is recommended.

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12.7 If the thickness required for the single-layer application is considered excessive, the double-layer insulation shouldbe considered. Where this necessitates two different board thicknesses, the greatest depth should be placed over therafter first.

Over and between-rafters insulation (double-layer system) (see Figures 3 and 4)12.8 The product is cut to coincide with the space between the joists. A support is then fixed to each side of therafters to secure the cut boards. The cut boards are then laid in place on the supports.

Figure 3 Double-layer system over and between rafters

membrane

counter batten

rafters

plasterboardEcoTherm Eco-Versalboard between rafters

unvented cavity(50 mm minimum)

tiles/slates

ttile/slate batten

EcoTherm Eco -Versalboard over rafters

Figure 4 Double-layer system between and under rafters

membrane

rafters

plasterboard

EcoTherm Eco-Versalboard between rafters

ttile/slate batten

tiles/slates

EcoTherm Eco-Versalboard below rafters

ventilated air space(50 mm minimum)

12.9 Above-rafters, the product is then laid to cover the whole roof area with the joints staggered and lightly butted.The boards are again secured by minimum 50 mm by 25 mm counter battens running down the length of the raftersand nailed at a minimum of 300 mm centres through the counter batten and insulation.

Finishing12.10 The roof tile underlay should be installed in accordance with the manufacturers instructions and, if applicable,the appropriate BBA Certificate.

12.11 Roof tiles or slates are installed in accordance with the relevant clauses of BS 5534 : 2003.

12.12 Internal lining panels appropriate to the application and required decoration are installed.

12.13 The recommendations of the tile or slate manufacturer should be followed when applying this product to awarm roof construction.

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Technical Investigations

13 Investigations13.1 The manufacturing process of EcoTherm Eco-Versal Board for use in Pitched Roof Applications was examined,including the methods adopted for quality control and details were obtained of the quality and composition of thematerials used.

13.2 An examination was made of data relating to:

compressive strength

thermal conductivity (fresh and aged) dimensional stability with temperature

density

dimensional accuracy

water absorption.

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Bibliography

BS 476-7 : 1987 Fire tests on building materials and structures Method for classification of the surface spread offlame of products

BS 5250 : 2002 Code of practice for control of condensation in buildings

BS 5268-2 : 2002 Structural use of timber Code of practice for permissible stress design, materials andworkmanship

BS 5534 : 2003 Code of practice for slating and tiling (including shingles)

BS 6399-2 : 1997 Loading for buildings Code of practice for wind loadsBS 6399-3 : 1988 Loading for buildings Code of practice for imposed roof loads

BS EN 13165 : 2008 Thermal insulation products for buildings Factory made rigid polyurethane foam (PUR)products Specification

BS EN ISO 6946 : 2007 Building components and building elements Thermal resistance and thermal transmittance Calculation method

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Conditions of Certification

14 Conditions14.1 This Certificate:

relates only to the product/system that is named and described on the front page

is granted only to the company, firm or person named on the front page no other company, firm or person mayhold or claim any entitlement to this Certificate

is valid only within the UK

has to be read, considered and used as a whole document it may be misleading and will be incomplete to beselective

is copyright of the BBA

is subject to English law.

14.2 Publications and documents referred to in this Certificate are those that the BBA deems to be relevant at the dateof issue or re-issue of this Certificate and include any: Act of Parliament; Statutory Instrument; Directive; Regulation;British, European or International Standard; Code of Practice; manufacturers instructions; or any other publication ordocument similar or related to the aforementioned.

14.3 This Certificate will remain valid for an unlimited period provided that the product/system and the manufactureand/or fabrication including all related and relevant processes thereof:

are maintained at or above the levels which have been assessed and found to be satisfactory by the BBA

continue to be checked as and when deemed appropriate by the BBA under arrangements that it will determine are reviewed by the BBA as and when it considers appropriate.

14.4 In granting this Certificate, the BBA is not responsible for:

the presence or absence of any patent, intellectual property or similar rights subsisting in the product/system or anyother product/system

the right of the Certificate holder to manufacture, supply, install, maintain or market the product/system

individual installations of the product/system, including the nature, design, methods and workmanship of or relatedto the installation

the actual works in which the product/system is installed, used and maintained, including the nature, design,methods and workmanship of such works.

14.5 Any information relating to the manufacture, supply, installation, use and maintenance of this product/system

which is contained or referred to in this Certificate is the minimum required to be met when the product/system ismanufactured, supplied, installed, used and maintained. It does not purport in any way to restate the requirementsof the Health & Safety at Work etc Act 1974, or of any other statutory, common law or other duty which may existat the date of this Certificate; nor is conformity with such information to be taken as satisfying the requirements of the1974 Act or of any statutory, common law or other duty of care. In granting this Certificate, the BBA does not acceptresponsibility to any person or body for any loss or damage, including personal injury, arising as a direct or indirectresult of the manufacture, supply, installation, use and maintenance of this product/system.

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APPROVAL

INSPECTION

TESTING

CERTIFICATION


Tel: 01702 520166 Fax: 01702 420636







ECOTHERM UNIVERSAL BOARD FOR FLOORS


This Certificate relates to EcoTherm Universal Boardfor Floors, a rigid urethane foam core board, facedon both sides with aluminium foil, for use as thermalinsulation in domestic ground-supported or suspendedconcrete and timber ground floors.

AGRMENT CERTIFICATION INCLUDES:factors relating to compliance with BuildingRegulations where applicablefactors relating to additional non-regulatoryinformation where applicableindependently verified technical specificationassessment criteria and technical investigationsdesign considerationsinstallation guidanceregular surveillance of productionformal three-yearly review.

KEY FACTORS ASSESSEDThermal performance the thermal conductivity (90/90 value) of the insulation component of the product as declaredby the Certificate holder is 0.023 Wm1K1 (see section 5).Condensation foil facings have a water vapour resistance exceeding 70 MNsg1 and the insulation core hasa water vapour resistivity of 300 MNsg1m1 and will, therefore, provide a significant resistance to water vapourtransmission (see section 6).Behaviour in relation to fire the product will be contained within the floor by the overlay until the overlay itself isdestroyed (see section 7).Floor loading the product, covered with a screed overlay or concrete slab, can support design loadings for self-contained dwelling units as defined in BS 6399-1 : 1996 without undue compression deflection (see section 8).Durability the product, when installed with the overlays specified, will remain effective as an insulating material forthe life of the building in which it is incorporated (see section 11).

Agrment Certificate


The BBA has awarded this Agrment Certificate to the company named above for the product described herein.This product has been assessed by the BBA as being fit for its intended use provided it is installed, used andmaintained as set out in this Certificate.


Date of First issue: 3 August 2009 Chris Hunt Greg Cooper

Head of Approvals Physics Chief Executive

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In the opinion of the BBA, EcoTherm Universal Board for Floors, if used in accordance with the provisions of thisCertificate, will meet or contribute to meeting the relevant requirements of the following Building Regulations:

The Building Regulations 2000 (as amended) (England and Wales)

Requirement: A1 Loading

Comment: Floors incorporating the product can meet this Requirement. See section 8 of this Certificate.

Requirement: C2(a)(c) Resistance to moistureComment: Floors incorporating the product can meet this Requirement. See sections 6.1 and 6.3 of this Certificate.Requirement: L1(a)(i) Conservation of fuel and power

Comment: The product can contribute to meet its Target Emission Rate. See sections 5.3 to 5.6 of this Certificate.Requirement: Regulation 7 Materials and workmanship



Regulation: 8(1)(2) Fitness and durability of materials and workmanship

Comment: The product can contribute to a construction satisfying this Regulation. See sections 10 and 11 and theInstallation part of this Certificate.

Regulation: 9 Building standards constructionStandard: 1.1(a)(b) Structure

Comment: Floors incorporating the product can satisfy this Standard, with reference to clause 1.1.1 (1). See section 8of this Certificate.

Standard: 3.15 Condensation

Comment: Floors incorporating the product can satisfy this Standard, with reference to clauses 3.15.1 (1), 3.15.4(1).See sections 6.1 and 6.4 of this Certificate.

Standard: 6.1(a)(b) Carbon dioxide emissionsStandard: 6.2 Building insulation envelope

Comment: The product can contribute to satisfying these Standards, with reference to clauses, or parts of, 6.1.2(1),6.1.6(1), 6.2.1(1), 6.2.3(1), and 6.2.9(1) to 6.2.12(1). See sections 5.3 to 5.6 of this Certificate.


Comment: All comments given for this product under Regulation 9, also apply to this Regulation, with reference toclause 0.12.1(1) and Schedule 6(1).(1) Technical Handbook (Domestic).



Comment: The product is acceptable. See section 11 and the Installation part of this Certificate.Regulation: B3(2) Suitability of certain materials

Comment: The product is acceptable. See section 10 of this Certificate.Regulation: C5 Condensation

Comment: The product can contribute to minimising the risk of condensation. See section 6.1 of this Certificate.Regulation: D1 Stability

Comment: Floors incorporating the product can meet this Regulation. See section 8 of this Certificate.Regulation: F2(a)(i) Conservation measures

Regulation: F3 Target carbon dioxide Emissions RateComment: The product can contribute to a building satisfying its Target Emission Rate. See sections 5.3 to 5.6 of thisCertificate.

Construction (Design and Management) Regulations 2007

Construction (Design and Management) Regulations (Northern Ireland) 2007

Information in this Certificate may assist the client, CDM co-ordinator, designer and contractors to address theirobligation under these Regulations.See section: 2 Delivery and site handling (2.1 and 2.2).


NHBC Standards 2008NHBC accepts the use of EcoTherm Universal Board for Floors, when installed and used in accordance with thisCertificate, in relation to NHBC Standards, Chapter 5.1, Substructure and ground bearing floors.

Regulations

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Zurich Building Guarantee Technical Manual 2007In the opinion of the BBA, EcoTherm Universal Board for Floors, when installed and used in accordance with thisCertificate, satisfies the requirements of the Zurich Building Guarantee Technical Manual, Section 3 Substructure,Sub-section Floors.

General

This Certificate relates to EcoTherm Universal Board for Floors, a rigid urethane foam core board, faced on both sideswith aluminium foil for use in floors in new and existing domestic buildings.


1 Description1.1 EcoTherm Universal Board for Floors is a rigid urethane foam core board, produced according to BS EN 13165 :2008, faced with aluminium foil/kraft/foil tri-laminate on both sides.

1.2 The boards have the nominal characteristics shown in Table 1:

Table 1 Nominal characteristics

Length (mm) 2400

Width (mm) 1200

Thickness (mm) 25, 30, 35, 40, 50, 60, 65, 70, 75, 80, 90, 100, 110,120, 130, 140, 150, 160, 170, 180, 190 and 200

Core density (kgm3) 30

Edge detail Square

Compressive strength (kPa) >140

Water vapour resistance(MNsg1) >100

1.3 The product is suitable for use in domestic ground-supported or suspended concrete ground floors and for usebetween the joists of suspended timber ground floors.

2 Delivery and site handling

2.1 The product is delivered shrink-wrapped in polythene on non-returnable pallets, each pack including a labeldetailing the manufacturers trade name, product name, grade and the BBA identification mark incorporating thenumber of this Certificate.

2.2 Packs should be stored off the ground on a clean, level surface under cover to protect them from moisture andmechanical damage.

2.3 The product should not be stored in direct sunlight or in areas subjected to elevated temperatures.

2.4 Care must be exercised in handling individual boards to avoid crushing the edges and corners.

2.5 The product must not be exposed to open flame or to other ignition sources. Care must be taken to preventcontact with solvents


The following is a summary of the assessment and technical investigations carried out on EcoTherm Universal Board forFloors.

Design Considerations

3 General3.1 EcoTherm Universal Board for Floors is effective in reducing the thermal transmittance (U value) of new or existingfloors.

3.2 Ground-supported concrete floors incorporating the product must include a suitable damp-proof membrane laid inaccordance with the relevant clauses BS 8102 : 1990 and/or BS 8215 : 1991 (see section 9 of this Certificate).

3.3 Suspended concrete or timber ground floors incorporating the boards must include a damp-proof membrane orsuitable ventilation of the sub-floor as appropriate (see section 9 of this Certificate).

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3.4 The overlay to the boards should be:a cement-based floor screed laid in accordance with the relevant clauses of BS 8204-1 : 2003 and/or BS 8204-2 :2003a particle board Grade P5 or P7 to BS EN 312 : 2003a concrete slab.

4 Practicability of installationThe product is designed to be installed by a competent general builder, or a contractor, experienced with this type ofproduct.

5 Thermal Performance5.1 Calculations of the thermal transmittance (U value) of a floor should be carried out in accordance withBS EN ISO 6946 : 2007, BS EN ISO 13370 : 2007 and BRE report (BR 443 : 2006) Conventions for U-valuecalculations using the declared thermal conductivity 0.023 Wm1K1 (90/90 value) for the boards and foil facingemissivity of 0.05.

5.2 The U value of a complete floor will depend on the selected insulation thickness, the perimeter/area ratio and thefloor type. Calculated U values for example constructions are given in Table 2.

Table 2 Example ground supported floor U values (Wm2K1)

Floor type Perimeter/area ratio

Insulation Thickness

25 mm 70 mm 100 mm 200 mm

Slab on groundsupport

0.20.40.60.81.0

0.240.340.400.440.46

0.160.200.220.230.24

0.130.160.170.180.18

0.080.090.100.100.10

Suspended timberfloor

0.20.40.60.81.0

0.270.340.390.410.43

0.190.230.250.260.26

0.160.190.200.210.21

0.110.120.130.130.13

Suspended Beam& Block floor

0.20.40.60.81.0

0.280.360.410.440.46

0.180.210.230.240.24

0.150.170.180.180.18

0.090.100.100.100.10

5.3 When considering insulation requirements, designers should refer to the detailed guidance contained in thedocuments supporting the national Building Regulations. The U values shown in Table 3 indicate that theproducts can enable, or contribute to enable, a floor to achieve typical design U values referred to in those

supporting documents. See Tables 3 and 4.

Table 3 Typical design U values for floors England & Wales and Northern Ireland

Wm2K1 Construction type

0.22 Mean for new extensions(1)

0.25 Notional mean in SAP and SBEM and limit mean for new build

0.25 Mean for replacement, renovated and retained floors and non domestic consequential improvements(1)

0.70 Individual limit for new build and flexible approaches(1)

(1) Refer to relevant documents supporting the national Building Regulations for alternative or flexible approaches.

Table 4 Typical design U values for floors Scotland

Wm2K1 Construction type

0.200.22

Notional mean for dwellings in SAP and the simplified approach: solid fuel, packages 3 and 6 other fuels, packages 1, 2, 4 and 5

0.22 Mean for conversion of unheated buildings and stand alone buildings of less than 50 m2

0.22 Mean for extensions and alterations(1)

0.22 Notional mean in SAP and SBEM and limit mean for new build

0.25 Notional mean for non domestic in SBEM and limit mean for all new build and stand alone buildings of50 m2 or more

0.70 Individual limit for new build, new extensions, and alterations(1) and conversions of heated buildings andstand alone buildings of less than 50 m2.

(1) Refer to relevant documents supporting the national Building Regulations for alternative or flexible approaches.

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New buildings5.4 Floors with U values lower than (or the same as, for dwellings in Scotland) the relevant notional value specifiedin Table 3 or 4 will contribute to a building meeting its Target Emission Rate. Floors with higher U values will requireadditional energy saving measures in the building envelope and/or services.

5.5 The product can maintain, or contribute to maintaining, continuity of thermal insulation at junctions between floorsand external walls. Details shown in Figure1 will allow use of the default psi values for Accredited Construction detailsin Emission Rate calculations to SAP 2005 or the Simplified Building Energy Model (SBEM). Detailed guidance in thisrespect and on limiting heat loss by air infiltration can be found in:

England and Wales TSO 2002 publication Limiting thermal bridging and air leakage: Robust construction detailsfor dwellings and similar buildings or Accredited Construction Details (version 1.0).


Existing buildings5.6 For existing buildings, extensions and conversions, floors will be acceptable where they do not exceed therelevant U value in Table 3 or 4 and junctions comply with section 5.5.

Figure 1 Junction between floors and walls

damp-proof course

continuous ribbon of plaster

adhesive, sealing joint betweenwall and board

vapour control layerunder timber floor finish

20 mm strip of perimeter insulationwith thermal conductivity ( value) notexceeding 0.025 Wm K should beinstalled around any screed

21 1

damp proof membraneabove or below slab

wall insulation continued atleast 150 mm below top offloor insulation

external ground level

6 CondensationInterstitial condensation

6.1 Floors will adequately limit the risk of interstitial condensation when they are designed and constructed inaccordance with BS 5250 : 2002, Section 8.5 and Appendix D. The foil facings have a water vapourresistance exceeding 70 MNsg1 and the insulation core has a water vapour resistivity of 300 MNsg1m1.

6.2 A vapour control layer in the warm side of the insulation, or the damp proof membrane (acting as a VCL) situated(as appropriate) in the warm side, might be required to limit the risk of interstitial condensation.

Surface condensation6.3 Floors will adequately limit the risk of surface condensation when the thermal transmittance (U value) doesnot exceed 0.7 Wm2K1 at any point, and the junctions with walls are designed in accordance with therelevant requirements of TSO publication Limiting thermal bridging and air leakage : Robust construction details

for dwellings and similar buildings, 2002 or BRE Information Paper IP 01/06.

6.4 Floors will adequately limit the risk of surface condensation when the thermal transmittance (U value) doesnot exceed 1.2 Wm2K1 at any point. Guidance may be obtained from Section 8 of BS 5250 : 2002 andBRE report (BR 262 : 2002) Thermal insulation : avoiding risks.

7 Behaviour in relation to fire7.1 The product does not prejudice the fire resistance properties of the floor provided they are used in accordance with

BS 6203 : 2003. When classified in accordance to BS EN 13501-2 : 2007 the product achieved a class E rating.7.2 When properly installed, the product will not add significantly to any existing fire hazard. The boards will becontained within the floor by the overlay until the overlay itself is destroyed. Therefore, the product will not contribute tothe development stages of a fire or present a smoke or toxic hazard.

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8 Floor LoadingThe product is suitable for occupancies defined in this Certificate when covered with a suitable floor coveringand are capable of resisting a uniformly distributed load of < 1.5 kNm2 and a concentrated load of < 1.4 kNfor category A1 and type A situations for domestic and residential activities as defined in NA to BS EN1991-1-

1 : 2002 Tables NA.2 and BS 6399-1 : 1996, Table 1 respectively. Further assessment is necessary in the case ofduty walkways and floors subject to physical activities.

9 Moisture penetration9.1 The product must be used above the dpm and must not be used where it may come into contact with moisturefrom the ground.

9.2 For floors subject to national Building Regulations, construction should be as detailed or designed in accordancewith:

England and Wales Approved Document C, Section 4Scotland Mandatory Standard 3.4, clauses 3.4.2(1) to 3.4.4(1) and 3.4.6(1)


Northern Ireland Technical Booklet C, Section 1.

10 MaintenanceAs the product is confined within the floor and it has suitable durability (see section 11), maintenance is notrequired.

11 DurabilityThe product is rot-proof, dimensionally stable and when installed with the overlays specified in this Certificate,will remain effective as an insulating material for the life of the building in which they are incorporated.

Installation

12 General12.1 Installation of EcoTherm Universal Board for Floors must be in accordance with the Certificate holders installationinstructions and the requirements of this Certificate.

12.2 Typical methods are shown in Figures 2 to 4. Reference to the methods should also be made to BRE report(BR 262 : 2002).

Figure 2 Ground-supported floor

damp-proof course

continuous ribbon of plasteradhesive, sealing joint betweenwallboard

20 mm strip of perimeter insulationwith thermal conductivity ( value) notexceeding 0.025 Wm K should be

installed around any screed

21 1

damp proof membraneexternal ground level


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Figure 3 Suspended concrete ground floors

continuous ribbon of plasteradhesive, sealing joint betweenwall and board



damp-proof course

cavity barrier typesleeve through cavity

sub floor ventilation should beprovided, minimum 1500 mmper metre run of external wall or500 mm per m floor area

2

2 2

solum

vapour control layerunder timber floor finish

Figure 4 Between the joists of suspended timber ground floors

continuous ribbon of plaster adhesive,sealing joint between wallboard

20 mm strip of perimeter insulationwith thermal conductivity ( value) notexceeding 0.025 Wm K should beinstalled around any screed

21 1

damp proof membrane



flexible insulation/expandingfoam and continuous sealant

insulation directly underflooring - supported on battens

floor joist ends supportedon joist hangers or usingscarcement wall

sub floor ventilation should beprovided, minimum 1500 mmper metre run of external wall or500 mm per m floor area

2

2 2

solumdamp proof course

12.3 All concrete floor surfaces should be smooth, level and flat to within 5 mm when measured with a 2 metrestraight-edge. Irregularities greater than this must be removed, whilst minor irregularities (up to 10 mm deep) may belevelled with mortar or thin screed.

12.4 In ground-supported concrete floors, the concrete floor slab over which the product is laid should be left for aslong as possible to maximise drying out and dissipation of constructional moisture, in accordance with BS 8203 :2001, Section 3.1.2.

12.5 Where the product is used over ground-supported concrete floor slabs, a suitable damp-proof membrane inaccordance with BS 8204-1 : 2003 or BS 8204-2 : 2003 should be laid to resist moisture from the ground. If aliquid-type damp-proof membrane is applied to the slabs, it should be of a type compatible with the boards and beallowed to dry out fully prior to installation of the product.

12.6 Where the product is used on hardcore bases under ground-supported concrete slabs, the hardcore must becompacted and blinded with a thin layer of sand before application of the dpm and boards.

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12.7 The product can be used on beam-and-block suspended concrete floors, that are subject of a current AgrmentCertificate and installed in accordance with, and within the limitations imposed by that Certificate, or those designedand installed to the precast and general loading codes, that have been assessed as suitable.

12.8 Where a screed or concrete slab is laid over the product, vertical upstands of insulation should be providedand be of sufficient depth to fully separate the screed or slab from the wall and provide a minimum thermal resistanceof 0.75 m2KW1. Alternatively, a suitable partial fill cavity wall insulation material can be extended below the damp-proof course level to provide edge insulation to the floor.

12.9 To limit the risk of damage from condensation and other sources of dampness, the boards and overlays shouldonly be laid after the construction is made substantially weathertight, eg after glazing. During construction the boardsmust also be protected from water spillage, plaster droppings and traffic.

13 Procedure13.1 The product is cut to size with a fine tooth saw, as necessary, and laid with closely-butted, staggered cross-joints, ensuring that the insulation fits tightly around any service penetrations and all spaces are completely filled.

13.2 The laying pattern should ensure that all on site cut edges are at the perimeter of the floor or some otherfeature, eg mat wells, thresholds or access ducts. Spreader boards should be used to protect the product during theapplication.

Timber-based board overlay13.3 Before applying the timber boarding plywood or OSB, preserved battens should fixed in place at doorways,partitions and access panels and any area that requires additional support according to BS 1282 : 1999. Adequatetime should be allowed for solvent vapours to evaporate.

13.4 A dpm, polythene sheet, 1000 gauge, should be laid over the sub straight and beneath the insulation boardrunning 100 mm up the wall with the 150 mm overlay joints taped. The top joints of the insulation panels can then betaped with a foil tape.

13.5 A staggered cross joints system should apply when using tongued and grooved boarding, OSB, plywood orparticle board in accordance with DD ENV 12872 : 2000.

13.6 A 2 mm per metre run or a minimum 10 mm expansion gap should be provided between the overlay board andthe perimeter walls.

13.7 PVA adhesive should be applied to the joints before the overlay boards are interlocked, and temporary wedgesinserted between the walls and floor to maintain tight joints until the adhesive sets.

13.8 Before the skirting boards are fixed in place remove the wedges and fill the gap with a polyurethane filler foam.

13.9 Where there is a possibility of water spillage suitable protective measures should be taken to prevent damage to

the floor covering.Cement-based screed overlay13.10 Insulation is laid to the sub straight and edge pieces are cut and placed around the perimeter of the floor andjoints taped. A polythene VCL is then laid over the insulation with the 150 mm

overlaps taped. A compacted screed is then poured over to a depth of 65 mm for a domestic dwelling and 75 mm forcommercial and others. BRE Building Elements, Floors & flooring Chapter 4.2 should be used for guidance along withBS 8204-1 : 2003 or BS 8204-2 : 2003.

Concrete slab overlay (ground-bearing only)13.11 The ground should be prepared with hardcore and blinding. Edge strips are cut and positioned around thefloor perimeter. A polythene dpm of a minimum 0.125 mm thick is laid over the insulation with the 150 mm overlapstaped and then the required thickness of concrete is laid in accordance with BS 8000-9 : 2003 and BS 8204-1 :

2003.Suspended Timber Floor13.12 Boards are cut to fit tightly between the timber joists. Any small gaps should be filled with a polyurethane fillerfoam or cut strips of rigid insulation.

13.13 To keep the boards in position fix treated timber battens to the joists on the underside of the insulation withcorrosion protected nails.

14 Incorporation of services14.1 De-rating of electrical cables should be considered where the insulation restricts air cooling of cables and theboards must not be used in direct contact with electrical heating cables.

14.2 Where the product is installed on a floor of a suspended beam and block design, all services must be installed

in accordance with the Agrment Certificate for that floor and/or with the relevant current codes of practice.14.3 Where possible, electrical conduits, gas and water pipes or other services should be contained within ducts orchannels within the concrete slab. Where this is not possible, the services may be accommodated within the insulation,provided they are securely fixed to the concrete slab. Electrical cables should be enclosed in a suitable conduit.

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14.4 Where water pipes are installed below the insulation they should be pre-lagged. Generally, insulation will berelatively thin so it may not be possible to install pipes within the insulation. Pipes installed above the insulation will notrequire lagging, although some provision needs to be made for expansion and contraction.

14.5 On board overlay floors, in situations where access to the services is desirable, a duct may be formed bymechanically fixing to the floor, timber bearers of the same thickness as the insulation to provide support for a particleboard cover. The duct should be as narrow as possible and not exceed 400 mm in width or the maximum particleboard spans given in DD CEN/TS 12872 : 2007 without intermediate support. Services should be suitably fixed tothe floor base and not to the insulation boards (see section 4.4 with regard to limiting heat loss).


15 Tests15.1 The manufacturing process of EcoTherm Universal Board for Floors was examined, including the methodsadopted for quality control and details were obtained of the quality and composition of the materials used.

15.2 As part of the assessment tests were carried out to determine:

dimensional stability

bowing under a thermal gradient

compressive strength

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Bibliography

BS 1282 : 1999 Wood preservatives Guidance on choice, use and application


BS 6203 : 2003 Guide to fire characteristics and fire performance of expanded polystyrene materials (EPS and XPS)used in building applications

BS 6399-1 : 1996 Loading for buildings Code of practice for dead and imposed loads

BS 8000-9 : 2003 Workmanship on building sites Cementitious levelling screeds and wearing screeds Code ofpractice

BS 8102 : 1990 Code of practice for protection of structures against water from the ground

BS 8203 : 2001 Code of practice for installation of resilient floor coverings

BS 8204-1 : 2003 Screeds, bases and in-situ floorings Concrete bases and cement sand levelling screeds toreceive floorings Code of practiceBS 8204-2 : 2003 Screeds, bases and in-situ floorings Concrete wearing surfaces Code of practice

BS 8215 : 1991 Code of practice for design and installation of damp-proof courses in masonry construction

BS EN 312 : 2003 Particleboards Specifications

BS EN 1991-1-1 : 2002 Eurocode 1 : Actions on structures General actions Densities, self-weight, imposed

loads for buildingsBS EN 13165 : 2008 Thermal insulation products for buildings Factory made rigid polyurethane foam (PUR)products Specification

BS EN 13501-1 : 2007 Fire classification of construction products and building elements. Classification using testdata from reaction to fire tests


BS EN ISO 13370 : 1998 Thermal performance of buildings Heat transfer via the ground Calculation methods

DD CEN/TS 12872:2007 Wood-based panels. Guidance on the use of load-bearing boards in floors, walls androofs

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continue to be checked as and when deemed appropriate by the BBA under arrangements that it will determineare reviewed by the BBA as and when it considers appropriate.








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APPROVAL

INSPECTION

TESTING

CERTIFICATION


Tel: 01702 520166 Fax: 01702 420636






ECOTHERM ECO-VERSAL BOARDS

ECOTHERM ECO-VERSAL BOARD FOR TIMBER FRAME DWELLINGS


This Certificate relates to EcoTherm Eco-Versal Board forTimber Frame Dwellings, a rigid PIR polyurethane foam,faced on both sides with aluminium foil for use betweenstudding in external walls of conventional timber-framedwellings.


Regulations where applicable factors relating to additional non-regulatory

information where applicable independently verified technical specification assessment criteria and technical investigations design considerations installation guidance regular surveillance of production formal three-yearly review.

KEY FACTORS ASSESSEDThermal performance the product has a thermal conductivity (90/90value) of 0.023 Wm1K1 and can achieveU values of between 0.14 and 0.28 Wm2K1 in example walls (see section 5).

Risk of condensation the product can contribute to minimising the risk of surface condensation (see section 6).

Behaviour in relation to fire the product can be used in suitably designed walls that satisfies the loadbearingcapacity performance criterion of BS 476-21 : 1987 or BS EN 1365-1 : 1999 for the required fire-resistance period(see section 7).

Durability the product is sufficiently stable to remain effective as an insulation for the life of the building (see section 13).

Agrment Certificate


The BBA has awarded this Agrment Certificate to the company named above for the product described

herein. This product has been assessed by the BBA as being fit for its intended use provided it is installed, usedand maintained as set out in this Certificate.


Date of First issue: 2 November 2010 Simon Wroe Greg Cooper Head of Approvals Physics Chief Executive

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In the opinion of the BBA, EcoTherm Eco-Versal Board for Timber Frame Dwellings, if used in accordance with theprovisions of this Certificate, will meet or contribute to meeting the relevant requirements of the following BuildingRegulations:

The Building Regulations 2010 (England and Wales)

Requirement: B3(1) Internal fire spread (structure)

Comment: Walls incorporating the product must comply with this Requirement. See section 7.1 of this Certificate.Requirement: B3(4) Internal fire spread (structure)

Comment: Walls incorporating the product must comply with this Requirement. See section 7.3 of this Certificate.Requirement: C2(c) Resistance to moisture

Comment: The product can contribute to meeting this Requirement. See sections 6.1 and 6.3 of this Certificate.Requirement: L1(a)(i) Conservation of fuel and power

Comment: The product can contribute to meeting this Requirement. See sections 5.3 to 5.6 of this Certificate.Requirement: Regulation 7 Materials and workmanship



Regulation: 8(1) Fitness and durability of materials and workmanship

Comment: The product satisfies the requirements of this Regulation. See section 13 and the Installation part of thisCertificate.

Regulation: 9 Building standards constructionStandard: 2.4 Cavities

Comment: Walls incorporating the product must comply with this Standard, with reference to clauses 2.4.1(1)(2) and2.4.2(1)(2). See section 7.3 of this Certificate.

Standard: 2.6 Spread to neighbouring buildings

Comment: Walls incorporating the product can satisfy this Standard, with reference to clause 2.6.1(1). See sections7.1 and 7.3 of this Certificate.

Standard: 3.15 Condensation

Comment: The product can contribute to satisfying this Standard, with reference to clauses 3.15.1 (1) and 3.15.5(1).See sections 6.2 and 6.3 of this Certificate.

Standard: 6.1(b) Carbon dioxide emissions

Standard: 6.2 Building insulation envelope

Comment: The product is acceptable, with reference to clauses, or parts of, 6.1.6 (1), 6.2.1(1), 6.2.6(1), 6.2.7(1),6.2.9(1) and 6.2.13(1) of these Standards. See sections 5.3 to 5.6 of this Certificate.


Comment: All comments given for the product under Regulation 9 also apply to this Regulation, with reference toclause 0.12(1) and schedule 6(1).(1) Technical Handbook (Domestic).





Regulation: C5 CondensationComment: Walls incorporating the product can satisfy this Regulation. See section 6.3 of this Certificate.Regulation: E4(1) Internal fire spread Structure

Comment: Walls incorporating the product can satisfy this Regulation. See section 7.1 of this Certificate.Regulation: E4(4) Internal fire spread Structure

Comment: Walls incorporating the product must comply with this Regulation. See section 7.3 of this Certificate.Regulation: F2(a)(i) Conservation measuresRegulation: F3(2) Target carbon dioxide Emissions Rate

Comment: The product can contribute to a wall satisfying its target emission rate. See sections 5.3 to 5.6 of thisCertificate.

Construction (Design and Management) Regulations 2007

Construction (Design and Management) Regulations (Northern Ireland) 2007

Information in this Certificate may assist the client, CDM co-ordinator, designer and contractors to address theirobligations under these Regulations.See section: 2 Delivery and site handling 2.3 of this Certificate.

Regulations

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NHBC Standards 2010NHBC accepts the use of EcoTherm Eco-Versal Board for Timber Frame Dwellings, when installed and used inaccordance with this Certificate, in relation to NHBC Standards, Chapter 6.2 External timber framed walls.


1 Description1.1 EcoTherm Eco-Versal Board for Timber Frame Dwellings consists of polyurethane (PIR) foam board, manufacturedin accordance with BS EN 13165 : 2008, with a foil facing on both sides.

1.2 Boards are to be fixed between studding in a timber-frame construction.

1.3 The boards are available with the nominal properties of:(1)

Length (mm) 2400

Width (mm) 1200

Thickness (mm) 25 mm to 200 mm

Core density (kgm3) 31

Edge detail Square

Compressive strength (kPa) >140(1) Other sizes are available to order.

2 Delivery and site handling2.1 Boards are delivered shrink-wrapped in polyethylene on non-returnable pallets. Each pack includes a labeldetailing the manufacturers trade name, product name, grade and the BBA identification mark incorporating thenumber of this Certificate.

2.2 Packs should be stored off the ground on a clean, level surface under cover to protect the boards from:

moisture

mechanical damage

direct sunlight or elevated temperatures

open flame or other ignition sources

solvents.

2.3 As the boards are large they should be handled with care, particularly in a windy situation.


The following is a summary of the assessment and technical investigations carried out on EcoTherm Eco-Versal Boardfor Timber Frame Dwellings.

Design Considerations

3 General3.1 EcoTherm Eco-Versal Board for Timber Frame Dwellings is effective in reducing the thermal transmittance (U value)of external walls of timber-frame dwellings. It is essential that such walls are designed and constructed to incorporatethe normal precautions against moisture ingress, including a breather membrane over the timber sheathing.

3.2 New buildings subject to the national Building Regulations should be designed in accordance with the relevantrecommendations of BS EN 1995-1-1 : 2004 and the National Annex.

3.3 Constructions incorporating a masonry outer leaf (includes masonry units and natural stone blocks) should bein accordance with BS EN 1996-2 : 2006 and the National Annex. The designed residual cavity width should be50 mm and at no point less than 35 mm wide(1).

(1) A residual cavity, nominally 50 mm wide, will be required by the NHBC where normal standards of tolerance and workmanship are adopted.

3.4 It is recommended that services which penetrate the dry lining, eg light switches, power outlets, are kept to aminimum to limit damage to vapour checks. In addition, any penetrations should be either enclosed in plasterboard orstone mineral wool or suitably tested proprietary fire-rated systems to preserve the fire resistance of the wall.

3.5 This application requires the specifying of a vapour control layer (VCL) behind the internal finish. The VCL shouldtake the form of 500 gauge polythene or plasterboard backed with a vapour control membrane (or similar).

3.6 Installation must not be carried out until the moisture content of the timber frame is less than 20%.

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4 Practicability of installationThe boards are designed to be installed by a competent general builder, or a contractor, experienced with this typeof product.

5 Thermal performance5.1 Calculations of thermal transmittance (U value) should be carried out in accordance with BS EN ISO 6946 :2007 and BRE report (BR 443 : 2006) Conventions for U-value calculations using the declared thermal conductivity(90/90value) of 0.023 Wm

1K1 and an emissivity value of 0.05 for the foil facer.

5.2 The U value of a completed wall will depend on the selected insulation thickness and the insulation value of the

masonry and the internal finish. Calculated U values for example constructions are given in Table 1.Table 1 Example wall U values (Wm2K1)

Insulation thickness (mm) Stud depth (mm) U value

75 89 0.28

100 140 0.22

120 140 0.19

150 200 0.16

170 200 0.14

200 200 0.14

Note: Example timber-frame construction comprising 102 mm brick leaf, 50 mm

unventilated cavity, breathable membrane, 9 mm OSB board, 15% timberstuds, 12.5 mm plasterboard.

5.3 When considering insulation requirements, designers should refer to the detailed guidance contained in thedocuments supporting the national Building Regulations. The U values shown in Table 1 indicate that the productcan enable, or contribute to enable, a wall to achieve typical design U values referred to in those supporting

documents (see Tables 2 to 4).

Table 2 Mean design wall U values England and Wales(1)

Construction U value(Wm2K1)

Notional non-domestic building 0.26

Existing building new and replaced wall 0.28

Dwelling new-build limit 0.30

Existing building renovated or retained walls 0.30

Notional dwelling 0.35

Non-domestic new-build limit 0.35

(1) Flexible approaches on existing buildings are given in the Approved Documents.

Table 3 Mean design wall U values Scotland(1)


Notional dwelling 0.19

New dwelling simplified method 0.19

Conversion unheated building (into dwellings) 0.19

Extension to dwelling 0.19

Alterations and reconstructions to a dwelling 0.22

Stand-alone building < 50 m2 to a dwelling 0.22

New non-dwellings limit for shell and fit out 0.23

New dwelling limit 0.25

Conversion of unheated building 0.25

Non-domestic extension, alterations and reconstructions 0.25

New non-domestic limit 0.27Conversion of heated building 0.30

Notional non-dwelling 0.30

(1) Flexible approaches on existing buildings are given in the Technical Handbooks.

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Table 4 Mean design wall U values Northern Ireland(1)


Existing building new wall

Notional dwelling

Notional non-domestic building

Building new-build limit

Existing building replaced, renovated and retained wall

0.30

0.35

0.35

0.35

0.35

(1) Flexible approaches on existing buildings are given in the Technical Booklets.

New buildings5.4 Walls with U values lower than (or the same as, for dwellings in Scotland) the relevant notional value specifiedin Table 2, 3 and 4 will contribute to a building meeting its Target Emission Rate. Walls with higher U values willrequire additional energy saving measures in the building envelope and/or services.

5.5 The product can maintain, or contribute to maintaining, continuity of thermal insulation at junctions betweenelements. For Accredited Construction Details the corresponding psi values in BRE Information Paper IP 1/06 Assessingthe effects of thermal bridging at junctions and around openings, Table 3 may be used in carbon emission calculationsin Scotland and Northern Ireland. Detailed guidance for other junctions and on limiting heat loss by air infiltration canbe found in:

England and Wales Approved Documents to Part L and for new thermal elements to existing buildings, AccreditedConstruction Details (version 1.0). See also SAP 2009 Appendix K and the iSBEM User Manualfor new-build.


Existing buildings5.6 For existing buildings, such as extensions or conversions, walls will be acceptable where they do not exceed therelevant U value in Tables 2, 3 and 4 and junctions and openings comply with section 5.5.

6 Risk of condensationSurface condensation

6.1 Walls will limit the risk of surface condensation adequately when the thermal transmittance (U value) doesnot exceed 0.7 Wm2K1 at any point, and the junctions with other elements are designed in accordance withsection 5.5.

6.2 Walls will adequately limit the risk of surface condensation when the thermal transmittance (U value) doesnot exceed 1.2 Wm2K1 at any point. Guidance may be obtained from Section 8 of BS 5250 : 2002 andBRE report (BR 262 : 2002) Thermal insulation: avoiding risks.

Interstitial condensation6.3 Walls incorporating the product will adequately limit the risk of interstitial condensation when they aredesigned and constructed in accordance with BS 5250 : 2002 (Section 8 and Annex D).

6.4 Both foil facings have a water vapour resistance exceeding 70 MNsg1 and the insulation core has a watervapour resistivity of 300 MNsg1m1. When all joints between boards are taped for over stud applications, theproduct can provide significant resistance to water vapour transmission.

6.5 If the product is to be used in the external walls of rooms expected to have high humidity, care must be taken to provide

adequate permanent ventilation to avoid possible problems from the formation of interstitial condensation in the wall.7 Behaviour in relation to fire

7.1 The product can be added to the void between studwork in any loadbearing, timber-framed inner leaf to adouble leaf wall system providing that the existing inner leaf system is lined with gypsum plasterboard with a fireperformance of A2-s3,d2 or better. This satisfies the loadbearing capacity performance criterion of BS 476-21 :

1987 or BS EN 1365-1 : 1999 for the required fire-resistance period. However, this does not apply where the testedconstruction includes mineral wool, rockwool or similar insulation.

7.2 The suitability of constructions other than those described in section 7.1 should be demonstrated by anappropriate test or assessment.

7.3 Cavity barriers must be provided to comply with:

England and Wales Approved Document B, Section 6Scotland Mandatory Standard 2.4, clauses 2.4.1, 2.4.2 and 2.4.7

Northern Ireland Technical Booklet E, paragraphs 3.35 to 3.38.

7.4 When classified in accordance to BS EN 13501-2 : 2007 the product achieved a class E rating.

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8 Proximity of flues and appliancesWhen installing the product in close proximity to certain flue pipes and/or heat-producing appliances, the followingprovisions to the national Building Regulations are acceptable:

England and Wales Approved Document JScotland Mandatory Standard 3.19, clauses 3.19.1(1) to 3.19.9(1)


Northern Ireland Technical Booklet L.

9 Weathertightness

9.1 Constructions incorporating the product and built in accordance with section 3.3 will resist the transfer ofprecipitation to the inner leaf and satisfy the national Building Regulations:

England and Wales Requirement C2(a)(b)(c)Scotland Mandatory Standard 3.10, clause 3.10.5 (1)


Northern Ireland Regulation C4.

9.2 In all situations it is particularly important to ensure during installation that:

wall ties and fixings are installed correctly and are thoroughly clean

excess mortar is cleaned from the cavity face of the brick leaf and any debris removed from the cavity

installation is carried out to the highest level on each wall or the top edge of the insulation is protected by a cavity tray

a cavity tray, stop ends and weepholes, must be provided at lintel level.

10 De-rating of electrical cablesIn some cases it may be necessary to de-rate electrical cables buried in insulation as for other insulation products.BS 7671 : 2008, indicates that where wiring is completely surrounded by insulation, it may need to be de-rated toas low as half its free air current carrying capacity. Guidance should be sought from a qualified electrician.

11 InfestationUse of the product does not in itself promote infestation and there is no food value in the materials used. The creationof voids within the structure, ie gaps between the wall lining and the boards may provide habitation for insects orvermin in areas already infested. Wherever possible care should be taken to ensure that all voids are sealed, as anyinfestation may be difficult to eradicate retrospectively.

12 MaintenanceAs the insulation component of the product is confined behind the wall lining and it has suitable durability (see section 13),maintenance is not required.

13 DurabilityThe boards are rot proof, stable and will have a life equivalent to that of the wall structure in which they areincorporated.

Installation

14 General14.1 Installation of EcoTherm Eco-Versal Board for Timber Frame Dwellings must be in accordance with the relevantClauses of BS EN 1996-1-1: 2005, the National Annex and the Certificate holders instructions. Constructioninstallation details are given in Figure 1.

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Figure 1 Installation details

plasterboard

stud

VCL

EcoTherm Eco-VersalBoard for Timber Frame

22 mm x 25 mm batten

9 mm OSB sheathingbreather membrane

14.2 The boards are light to handle and easily cut, but care must be taken to prevent damage particularly at edges.

14.3 Damaged boards should not be used; small areas of damaged faces may be repaired with self-adhesivealuminium foil tape.

14.4 Boards should be cut to fit tightly between the timber studding and positioned against the inner face of thesheathing board. Any edge gaps should be filled with expanding insulation foam. The insulation should be held inplace by nails or timber battens to the warm side of the insulation.

14.5 The void created by space between the inner surface of the product and the dry lining can be utilised as aninsulated service duct.

14.6 Before applying the internal finish a sealed polythene vapour control layer of minimum thickness 0.125 mm(500 gauge) with lapped and sealed joints is placed over the stud face.


15 Investigations

Results of test data on EcoTherm Eco-Versal Board for Timber Frame Dwellings were assessed in relation to: water vapour resistance density thermal conductivity compressive strength

dimensional accuracy dimensional stability with temperature and humidity condensation risk.

BibliographyBS 476-21 : 1987 Fire tests on building materials and structures Methods for determination of the fire resistance ofloadbearing elements of construction


BS 7671 : 2001 Requirements for electrical installations. IEE Wiring Regulations. Sixteenth Edition

BS EN 1365-1 : 1999 Fire resistance tests for loadbearing elements Walls

BS EN 1995-1-1 : 2004 Eurocode 5 : Design of timber structures General Common rules and rules for buildingsNA to BS EN 1995-1-1 : 2004 UK National Annex to Eurocode 5 : Design of timber structures General Common rules and rules for buildings

BS EN 1996-1-1 : 2005 Eurocode 6 : Design of masonry structures General rules for reinforced and unreinforcedmasonry structuresNA to BS EN 1996-1-1 : 2005 UK National Annex to Eurocode 6 : Design of masonry structures General rules forreinforced and unreinforced masonry structures

BS EN 1996-2 : 2006 Eurocode 6 : Design of masonry structures Design considerations, selection of materials andexecution of masonryNA to BS EN 1996-2 : 2006 UK National Annex to Eurocode 6 : Design of masonry structures Designconsiderations, selection of materials and execution of masonry

BS EN 13165 : 2008 Thermal insulation products for buildings Factory made rigid polyurethane foam (PUR)

products SpecificationBS EN 13501-2 : 2007 Fire classification of construction products and building elements. Classification using datafrom fire resistance tests, excluding ventilation services.


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continue to be checked as and when deemed appropriate by the BBA under arrangements that it will determine are reviewed by the BBA as and when it considers appropriate.









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APPROVAL

INSPECTION

TESTING

CERTIFICATION


Tel: 01702 520166 Fax: 01702 420636







ECOTHERM ECO-VERSAL BOARD FOR USE IN PITCHED ROOF APPLICATIONS


This Certificate relates to EcoTherm Eco-Versal Board foruse in Pitched Roof Applications, a warm roof insulationsystem, using rigid urethane foam, faced on both sideswith aluminium foil for use in new and existing domesticand non-domestic buildings.


Regul

ag993569

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