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The fire resistance and sound insulation performances are for imperforate (e.g. sealed and airtight) partitions, walls and ceilings incorporatingboards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved onlyif British Gypsum components are used throughout, and the Company’s fixing recommendations are strictly observed. Any variation in thespecifications should be checked with British Gypsum.

Internal walls and partitions

New-build and conversionFor new-build and for new walls in material change of use (conversion), Building Regulations ApprovedDocument E states that the following internal walls and partitions must meet the Rw 40 dBrequirement:

● An internal wall between bedrooms● An internal wall between a bathroom / WC and a habitable room● An internal wall between bedrooms and any other room

Where internal walls include a door, they are exempt from this requirement.

Example systems

Stud: Gypframe 70 S 50 ‘C’ Studs

Centres: 600mm

Maximum height: 3600mm

Wall lining: 12.5mm Gyproc SoundBloc (each side)

Rw 40 dB

30 minutes fire resistance

Stud: Non-loadbearing 63mm x 38mm timber

Centres: 600mm

Maximum height: 3600mm

Wall lining: 15mm Gyproc SoundBloc (each side)

Additional info: Timber noggings may be required for structural support

Rw 40 dB

30 minutes fire resistance

GypWall CLASSIC

Timber stud

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The fire resistance and sound insulation performances are for imperforate (e.g. sealed and airtight) partitions, walls and ceilings incorporatingboards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved onlyif British Gypsum components are used throughout, and the Company’s fixing recommendations are strictly observed. Any variation in thespecifications should be checked with British Gypsum.

Wall construction: 100mm medium density concrete blocks (minimum 120kg / m2)

Plasterboardfixing method: DriLyner BASIC using Gyproc Dri-Wall Adhesive

Wall lining: 15mm Gyproc SoundBloc (each side)

Rw 40 dB

30 minutes fire resistance (dependent on base wall performance)

For partitions that do not fall into the above criteria, for example a wall that includes a door, there isno requirement to improve the acoustic insulation, therefore 12.5mm Gyproc WallBoard can be usedto line either side of the partition.

To upgrade the acoustic insulation of existing masonry partitions, Gyproc Soundcoat Plus can be usedto seal air paths before using DriLyner BASIC to ‘dot and dab’ Gyproc SoundBloc to the walls.

DriLyner BASIC

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Internal floors

New-build and conversionFor new-build and new floors in material change of use (conversion), Building Regulations ApprovedDocument E state that internal floors are required to meet Rw 40 dB.

Fixing plasterboard directly into timber joists can result in nail or screw popping. Using Gypframe RB2SureFix Bars in the construction of the ceiling can eliminate this problem, and help maintain theperformance and the aesthetics of the ceiling.

Example systems

Flooring: 22mm tongue and groove chipboard flooring

Joists: 195mm x 38mm solid joists at 600mm centres

Ceiling lining: 12.5mm Gyproc SoundBloc

Rw 42 dB

30 minutes fire resistance

Flooring: 22mm tongue and groove chipboard flooring

Joists: 195mm x 38mm solid joists at 600mm centres

Ceiling lining: 15mm Gyproc WallBoard

Rw 40 dB

30 minutes fire resistance

Solid timber joist (600mm centres)

Solid timber joist (600mm centres)

The fire resistance and sound insulation performances are for imperforate (e.g. sealed and airtight) partitions, walls and ceilings incorporatingboards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved onlyif British Gypsum components are used throughout, and the Company’s fixing recommendations are strictly observed. Any variation in thespecifications should be checked with British Gypsum.

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Flooring: 22mm tongue and groove chipboard flooring

Joists: 195mm x 38mm solid joists at 450mm centres

Ceiling fixing: Gypframe RB2 SureFix Bars

Ceiling lining: 12.5mm Gyproc WallBoard

Rw 41 dB

30 minutes fire resistance

Intregral garage conversionWhen building an integral garage, the floor acts as a bridge between a heated and unheated space.Building Regulations require the floor and ceiling to meet 30 minutes fire resistance whilst alsoproviding thermal insulation. The following system provides example guidance.

Flooring: 22mm tongue and groove chipboard flooring

Joists: 195mm x 38mm solid joists at 600mm centres

Insulation: 200mm Isover Space Saver Roll

Ceiling lining: 15mm Gyproc FireLine

30 minutes fire resistance

U value 0.22 W / m2K

Floor for integral garage

Solid timber joist (450mm centres)

The fire resistance and sound insulation performances are for imperforate (e.g. sealed and airtight) partitions, walls and ceilings incorporatingboards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved onlyif British Gypsum components are used throughout, and the Company’s fixing recommendations are strictly observed. Any variation in thespecifications should be checked with British Gypsum.

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Separating walls

New-buildWhen building new separating / party walls between dwellings Building Regulations ApprovedDocument E states they are required to meet the 45 dB DnTw + Ctr requirement.

Example systems

Wall construction: Lightweight aggregate cavity block wall (minimum 100mm blocks with a density between 1350 - 1600 kg / m3)

Cavity: Minimum 75mm cavity between blockwork

Wall lining: 13mm Thistle plaster - undercoat and finish coat (each side)

Robust Detail E-WM-2 meets the 45 dB DnTw + Ctr requirement

60 minutes fire resistance (dependent on base wall performance)

Wall construction: Lightweight aggregate cavity block wall (minimum 100mm blocks with a density between 1350 - 1600 kg / m3)

Wall preparation: 6mm Gyproc Soundcoat Plus (each side)

Plasterboard fixing method: DriLyner BASIC using Gyproc Dri-Wall Adhesive

Wall lining: 12.5mm Gyproc WallBoard (each side)

Robust Detail E-WM-4 meets the 45 dB DnTw + Ctr requirement

30 minutes fire resistance (dependent on base wall performance)

Lightweight aggregate blockwork with wet plaster

Lightweight aggregate blockwork with render and plasterboard

For separating wall and floor constructions to be fully effective, care must be taken to correctly detail the junctions between the separating wallor floor and associated elements such as external walls, other separating elements and penetrations or door openings, etc.

The fire resistance and sound insulation performances are for imperforate (e.g. sealed and airtight) partitions, walls and ceilings incorporatingboards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved onlyif British Gypsum components are used throughout, and the Company’s fixing recommendations are strictly observed. Any variation in thespecifications should be checked with British Gypsum.

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ConversionFor material change of use / conversion of separating walls, Building Regulations state that they arerequired to meet the 43 dB DnTw + Ctr requirement.

Often upgrading existing separating walls can only be achieved from one side of the wall, therefore toreduce as much air leakage as possible, apply a 6-8mm coat of Gyproc Soundcoat Plus to the masonrywall prior to installation of a drylining system to increase its acoustic potential.

Example systems

Wall construction: Masonry wall such as brickwork (minimum 200kg / m2)

Plasterboard fixing method: DriLyner SI using Gyproc Dri-Wall Adhesive with Gyproc Nailable Plugs

Wall lining: 52mm Gyproc TriLine

Additional info: Wall must be plastered on the other side

43 dB DnTw + Ctr

60 minutes fire resistance (dependent on base wall performance)

This system is more suited to reducing mid-frequency sounds, such as speech.

Wall construction: Masonry wall (such as brickwork)

Cavity: Minimum 35mm cavity (created by GypLyner UNIVERSAL system) with 25mm Isover APR 1200 insulation

Wall lining: 2 x 12.5mm Gyproc SoundBloc

Additional info: Wall must be plastered on the other side

43 dB DnTw + Ctr

60 minutes fire resistance (dependent on base wall performance)

This system will provide better acoustic insulation against hard to tackle low-frequency sounds, such as home cinemasystems.

Masonry wall with DriLyner SI

Masonry wall with GypLyner UNIVERSAL

For separating wall and floor constructions to be fully effective, care must be taken to correctly detail the junctions between the separating wallor floor and associated elements such as external walls, other separating elements and penetrations or door openings, etc.

The fire resistance and sound insulation performances are for imperforate (e.g. sealed and airtight) partitions, walls and ceilings incorporatingboards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved onlyif British Gypsum components are used throughout, and the Company’s fixing recommendations are strictly observed. Any variation in thespecifications should be checked with British Gypsum.

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Separating floors

New-buildWhen building new separating floors between dwellings Building Regulations Approved Document Estate they are required to meet the 45 dB DnTw + Ctr requirement.

Example systems

Flooring: 18mm tongue and groove chipboard flooring

Under flooringlayer: 19mm Gyproc Plank

Battens: Resilient composite timber battens at 400mm centres

Floor insulation: 65mm Isover APR 1200

Sub-deck: 15mm OSB

Joists: Minimum 220mm solid timber joists at 400mm centres

Ceiling fixing: Gypframe RB1 Resilient Bar at 400mm centres

Joist cavity fill: 100mm Isover APR 1200

Ceiling lining: 19mm Gyproc Plank and 12.5mm Gyproc WallBoard

Robust Detail E-FT-2 meets the 45 dB DnTw + Ctr requirement

60 minutes fire resistance

Solid timber joist with timber battens

For separating wall and floor constructions to be fully effective, care must be taken to correctly detail the junctions between the separating wallor floor and associated elements such as external walls, other separating elements and penetrations or door openings, etc.

The fire resistance and sound insulation performances are for imperforate (e.g. sealed and airtight) partitions, walls and ceilings incorporatingboards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved onlyif British Gypsum components are used throughout, and the Company’s fixing recommendations are strictly observed. Any variation in thespecifications should be checked with British Gypsum.

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Flooring: 22mm tongue and groove chipboard flooring

Under flooringlayer: 19mm Gyproc Plank

Battens: 70mm Gypframe 70 SB 65 Steel Battens at 400mm centres

Floor insulation: 50mm Isover APR 1200

Sub-deck: 15mm OSB

Joists: Minimum 240mm solid timber joists at 400mm centres

Ceiling fixing: Gypframe RB1 Resilient Bar at 450mm centres

Joist cavity fill: 100mm Isover APR 1200

Ceiling lining: 2 x 15mm Gyproc SoundBloc

Additional info: Where a cavity is required between the ceiling and the joists, Gypframe Resilient Bars can be replaced with the CasoLine MF ceiling, to give a 287mm cavity

45 dB DnTw + Ctr

60 minutes fire resistance

Flooring: 22mm tongue and groove chipboard flooring

Under flooringlayer: 19mm Gyproc Plank

Battens: Resilient composite timber battens at 400mm centres

Floor insulation: 50mm Isover APR 1200

Sub-deck: 15mm OSB

Joists: Minimum 240mm engineered timber ‘I’ joists at 400mm centres

Ceiling fixing: Gypframe RB1 Resilient Bar at 400mm centres

Joist cavity fill: 100mm Isover APR 1200

Ceiling lining: 19mm Gyproc Plank and 12.5mm Gyproc SoundBloc

Robust Detail E-FT-1 meets the 45 dB DnTw + Ctr requirement

60 minutes fire resistance

Solid timber joist with Gypframe Steel Battens

Engineered timber ‘I’ joist with timber battens

For separating wall and floor constructions to be fully effective, care must be taken to correctly detail the junctions between the separating wallor floor and associated elements such as external walls, other separating elements and penetrations or door openings, etc.

The fire resistance and sound insulation performances are for imperforate (e.g. sealed and airtight) partitions, walls and ceilings incorporatingboards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved onlyif British Gypsum components are used throughout, and the Company’s fixing recommendations are strictly observed. Any variation in thespecifications should be checked with British Gypsum.

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ConversionFor material change of use / conversion of separating walls, Building Regulations Approved Document Estate they are required to meet the 43 dB DnTw + Ctr requirement.

Example systems

Flooring: 21mm tongue and groove chipboard flooring

Under flooringlayer: 19mm Gyproc Plank

Joist channels: Gypframe SIF Floor Channels

Joists: Solid timber joists

Cavity fill: 100mm Isover APR 1200

Ceiling system: CasoLine MF suspended ceiling to give a 277mm cavity

Ceiling lining: 2 x 15mm Gyproc SoundBloc

Floor depth: From top of joist approximately 30mm

Overall floor / ceiling depth: Approximately 340mm

43 dB DnTw + Ctr

60 minutes fire resistance

Solid timber joist with GypFloor SILENT and CasoLine MF ceiling

For separating wall and floor constructions to be fully effective, care must be taken to correctly detail the junctions between the separating wallor floor and associated elements such as external walls, other separating elements and penetrations or door openings, etc.

The fire resistance and sound insulation performances are for imperforate (e.g. sealed and airtight) partitions, walls and ceilings incorporatingboards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved onlyif British Gypsum components are used throughout, and the Company’s fixing recommendations are strictly observed. Any variation in thespecifications should be checked with British Gypsum.

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Flooring: 21mm tongue and groove chipboard flooring

Joist channels: Gypframe SIF Floor Channels

Joists: Solid timber joists at 450mm or 600mm centres

Cavity fill: 100mm Isover APR 1200

Ceiling system: Gypframe RB1 Resilient Bar at 450mm centres

Ceiling lining: Inner layer 19mm Gyproc Plank Outer layer 12.5mm Gyproc SoundBloc

Floor depth: Approximately 30mm

Ceiling depth: Approximately 50mm

Additional info: Where a cavity is required between the ceiling and the joists, Gypframe Resilient Bars can be replaced with the CasoLine MF ceiling, to give a 287mm cavity

43 dB DnTw + Ctr

60 minutes fire resistance

Flooring: 21mm tongue and groove chipboard flooring

Under flooringlayer: 19mm Gyproc Plank

Joist channels: Gypframe SIF Floor Channels

Joists: Solid timber joists (minimum 50mm width)

Fire protection: Cavity bridged between joists by 12.5mm Glasroc F MULTIBOARD, resting on 12.5mm Glasroc F MULTIBOARD

strips, screw fixed to each joist (fixed flush)

Cavity fill: 100mm Isover APR 1200

Ceiling lining: Original lath and plaster ceiling

Floor depth: Approximately 30mm

Ceiling depth: None

Test and declare1

60 minutes fire resistance

1 Where the original ceiling needs to be retained, for example an ornate lath and plaster ceiling in an historic building, it may not be possibleto achieve the regulatory standards. It may therefore be permitted to test on site and declare the performance achieved subject to BuildingControl acceptance.

Solid timber joist with GypFloor SILENT

Solid timber joist with GypFloor SILENT and retained ceiling

For separating wall and floor constructions to be fully effective, care must be taken to correctly detail the junctions between the separating wallor floor and associated elements such as external walls, other separating elements and penetrations or door openings, etc.

The fire resistance and sound insulation performances are for imperforate (e.g. sealed and airtight) partitions, walls and ceilings incorporatingboards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved onlyif British Gypsum components are used throughout, and the Company’s fixing recommendations are strictly observed. Any variation in thespecifications should be checked with British Gypsum.

11Stockist-03-02

The fire resistance and sound insulation performances are for imperforate (e.g. sealed and airtight) partitions, walls and ceilingsincorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quotedperformances are achieved only if British Gypsum components are used throughout, and the Company’s fixing recommendations arestrictly observed. Any variation in the specifications should be checked with British Gypsum.

External walls

New-buildBuilding Regulations Approved Document L1A stipulates that compliance is based on the carbonperformance of the whole dwelling and a whole building measure is given through the use of a SAPcalculation.

There are many factors that influence the SAP calculation and the U-value of the external envelope(external walls) is only one part of this. Therefore the following example systems detail different U-values that can be achieved by using alternate Gyproc ThermaLine laminates; this should help givethe flexibility required when designing a new property.

In Scotland, Building Regulations Section 6 stipulates minimum performances and these can varydepending on the type of heating system.

Example systems

External leaf: 103mm brick skin

Cavity: 75mm cavity full-filled with Isover Hi-Cav

Internal leaf: 100mm medium dense block (0.61 W/m2K)

Plasterboard fixing method: DriLyner BASIC with Gyproc Dri-Wall Adhesive or DriLyner TL using Gyproc Dri-Wall Adhesive and Gyproc

Nailable Plugs

Wall lining: Gyproc WallBoard or Gyproc ThermaLine laminate (see below)

U-value Gyproc ThermaLine laminate Wall thickness (mm)

0.17 70mm Gyproc ThermaLine SUPER 358

0.18 60mm Gyproc ThermaLine SUPER 348

0.20 50mm Gyproc ThermaLine SUPER 338

0.25 40mm Gyproc ThermaLine PLUS 328

0.26 35mm Gyproc ThermaLine PLUS 323

0.34 12.5mm Gyproc WallBoard 301

Full-fill cavity wall with medium density blocks

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The fire resistance and sound insulation performances are for imperforate (e.g. sealed and airtight) partitions, walls and ceilingsincorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quotedperformances are achieved only if British Gypsum components are used throughout, and the Company’s fixing recommendations arestrictly observed. Any variation in the specifications should be checked with British Gypsum.

External leaf: 103mm brick skin

Cavity: 75mm cavity full-filled with Isover Hi-Cav insulation

Internal leaf: 100mm aircrete block (0.11 W/m2K)

Plasterboard fixing method: DriLyner BASIC with Gyproc Dri-Wall Adhesive or DriLyner TL using Gyproc Dri-Wall Adhesive and

Gyproc Nailable Plugs

Wall lining: Gyproc WallBoard or Gyproc ThermaLine laminate (see below)

U-value Gyproc ThermaLine laminate Wall thickness (mm)

0.18 50mm Gyproc ThermaLine SUPER 338

0.22 40mm Gyproc ThermaLine SUPER 328

0.23 35mm Gyproc ThermaLine PLUS 323

0.24 27mm Gyproc ThermaLine PLUS 315

0.26 22mm Gyproc ThermaLine BASIC1 310

0.28 12.5mm Gyproc WallBoard 301

1 Two coats of Gyproc Drywall Sealer are required to provide a vapour control layer.

ConversionBuilding Regulations Approved Document L1B includes extensions, creating new dwellings through achange of use, or alterations to existing dwellings. The thermal element, i.e. the wall, roof or floor thatseparates a heated space from an unheated space, must achieve set U-values and these varydepending on whether the thermal element is in an extension or renovation of an existing element.

The following table highlights the U-value required, and these values can then be selected from thefollowing example systems.

L1B New element Renovations(e.g. extensions)

Wall 0.30 0.35 (0.70)1

Cavity wall 0.30 0.55 (0.70)1

1 If the current element is worse than the U-value quoted in brackets, then they should be upgraded to the adjacent U-value.

In Scotland, Building Regulations Section 6 stipulates minimum performances. For walls, typically0.27 W/m2K is required.

Full-fill cavity wall with aircrete blocks

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The fire resistance and sound insulation performances are for imperforate (e.g. sealed and airtight) partitions, walls and ceilingsincorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quotedperformances are achieved only if British Gypsum components are used throughout, and the Company’s fixing recommendations arestrictly observed. Any variation in the specifications should be checked with British Gypsum.

Example systems

External leaf: 103mm brick skin

Cavity: Minimum 50mm clear cavity

Internal leaf: 100mm medium dense block (0.61 W/m2K)

Plasterboard fixing method: DriLyner TL using Gyproc Dri-Wall Adhesive and Gyproc Nailable Plugs

Wall lining: Gyproc ThermaLine laminate (see below)

U-value Gyproc ThermaLine laminate Wall thickness (mm)

0.21 90mm Gyproc ThermaLine SUPER 353

0.26 70mm Gyproc ThermaLine SUPER 333

0.30 60mm Gyproc ThermaLine SUPER 323

External leaf: 103mm brick skin

Cavity: Minimum 50mm clear cavity

Internal leaf: 100mm aircrete block (0.11 W/m2K)

Plasterboard fixing method: DriLyner TL using Gyproc Dri-Wall Adhesive and Gyproc Nailable Plugs

Wall lining: Gyproc ThermaLine laminate (see below)

U-value Gyproc ThermaLine laminate Wall thickness (mm)

0.19 90mm Gyproc ThermaLine SUPER 353

0.20 80mm Gyproc ThermaLine SUPER 343

0.23 70mm Gyproc ThermaLine SUPER 333

0.26 60mm Gyproc ThermaLine SUPER 323

0.31 50mm Gyproc ThermaLine SUPER 313

0.54 30mm Gyproc ThermaLine BASIC1 293

1 Two coats of Gyproc Drywall Sealer are required to provide a vapour control layer.

Clear cavity wall with medium density blocks

Clear cavity wall with aircrete blocks

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The fire resistance and sound insulation performances are for imperforate (e.g. sealed and airtight) partitions, walls and ceilingsincorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quotedperformances are achieved only if British Gypsum components are used throughout, and the Company’s fixing recommendations arestrictly observed. Any variation in the specifications should be checked with British Gypsum.

External leaf: 103mm brick skin

Cavity: Minimum 50mm clear cavity

Internal leaf: 103mm brick

Plasterboard fixing method: DriLyner TL using Gyproc Dri-Wall Adhesive and Gyproc Nailable Plugs

Wall lining: Gyproc ThermaLine laminate (see below)

U-value Gyproc ThermaLine laminate Wall thickness (mm)

0.21 90mm Gyproc ThermaLine SUPER 356

0.23 80mm Gyproc ThermaLine SUPER 346

0.26 70mm Gyproc ThermaLine SUPER 336

0.30 60mm Gyproc ThermaLine SUPER 326

0.37 50mm Gyproc ThermaLine SUPER 316

0.55 40mm Gyproc ThermaLine PLUS 306

Wall construction: 215mm solid brick wall

Plasterboard fixing method: GypLyner UNIVERSAL (or DriLyner RF using Gyproc Sealant, where stated)

Wall lining: Gyproc ThermaLine laminate (see below)

U-value Gyproc ThermaLine laminate Wall thickness (mm)

0.24 70mm Gyproc ThermaLine SUPER and 50mm Isover APR 1200 335

0.25 80mm Gyproc ThermaLine SUPER (no insulation and 25mm cavity) 320

0.27 70mm Gyproc ThermaLine SUPER and 25mm Isover APR 1200 310

0.33 60mm Gyproc ThermaLine SUPER using DriLyner RF (brickwork 291 (minimum)plastered internally)

Brick and brick clear cavity wall

Solid brick wall

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The fire resistance and sound insulation performances are for imperforate (e.g. sealed and airtight) partitions, walls and ceilingsincorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quotedperformances are achieved only if British Gypsum components are used throughout, and the Company’s fixing recommendations arestrictly observed. Any variation in the specifications should be checked with British Gypsum.

External leaf: 300mm solid stone wall

Plasterboard fixing method: GypLyner UNIVERSAL

Wall lining: Gyproc ThermaLine laminate (see below)

U-value Gyproc ThermaLine laminate Wall thickness (mm)

0.23 90mm Gyproc ThermaLine SUPER 415

0.25 70mm Gyproc ThermaLine SUPER and 50mm Isover APR 1200 420

0.26 80mm Gyproc ThermaLine SUPER 405

0.28 60mm Gyproc ThermaLine SUPER and 50mm Isover APR 1200 410

0.28 70mm Gyproc ThermaLine SUPER and 25mm Isover APR 1200 395

0.32 60mm Gyproc ThermaLine SUPER and 25mm Isover APR 1200 385

Wall construction: 16mm external render, 190mm medium density block (0.61 W/m2K)

Plasterboard fixing method: GypLyner UNIVERSAL (or DriLyner RF using Gyproc Sealant, where stated)

Wall lining: Gyproc ThermaLine laminate (see below)

U-value Gyproc ThermaLine laminate Wall thickness (mm)

0.24 80mm Gyproc ThermaLine SUPER using DriLyner RF (blockwork 302plastered internally)

0.24 70mm Gyproc ThermaLine SUPER and 50mm Isover APR 1200 326

0.26 70mm Gyproc ThermaLine SUPER and 25mm Isover APR 1200 307

0.32 60mm Gyproc ThermaLine SUPER using DriLyner RF (blockwork 282plastered internally)

Window revealsWindow reveals can often be a weak point in the thermal insulation as space isrestricted for fitting Gyproc ThermaLine laminates.

27mm Gyproc ThermaLine PLUS is a thin laminate that can be used around windowreveals and where space is tight. Ensuring all surfaces of external walls arecovered with some insulation will improve the overall insulation of the space.

Solid stone wall

Render and block wall

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The fire resistance and sound insulation performances are for imperforate (e.g. sealed and airtight) partitions, walls and ceilingsincorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quotedperformances are achieved only if British Gypsum components are used throughout, and the Company’s fixing recommendations arestrictly observed. Any variation in the specifications should be checked with British Gypsum.

Rooms beneath the ground can be difficult to treat as moisture can travel through the ground.Basements and cellars can have a tanking treatment to reduce this occurrence, however this cancause condensation to form on the inside of the room.

The GypLyner IWL (Independent Wall Lining) system builds away from existing walls, fixing to floors,ceilings and adjacent walls to support the framework to reduce the contact with any tanking. GyprocThermaLine PLUS has a high level of thermal insulation as well as a vapour control barrier to reducecondensation forming behind the lining.

Seek adviceSome tanking methods will be downgraded if there is any penetration in the tanking seal.BS5250:2002 contains some limited guidance. However, we would advise you to seek the guidance ofa specialist in the field of Hygrothermal performance and properties for structures below ground todetermine whether there is any risk of interstitial condensation within the construction.

Basements and cellars

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The fire resistance and sound insulation performances are for imperforate (e.g. sealed and airtight) partitions, walls and ceilingsincorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quotedperformances are achieved only if British Gypsum components are used throughout, and the Company’s fixing recommendations arestrictly observed. Any variation in the specifications should be checked with British Gypsum.

Room-in-the-roof and loft spaces

New-buildBuilding Regulations Approved Document L stipulates that the external fabric (e.g. gable walls) meet minimumrequirements to comply with thermal performances. Example constructions for wall and roof linings are shownbelow.

In Scotland, Building Regulations Section 6 stipulates minimum performances which can vary depending on thetype of heating system, typically 0.27 W/m2K for walls, 0.20 W/m2K for pitched roofs with insulation between therafters (room-in-the-roof) and 0.16 W/m2K for pitched roofs with insulation between ceiling joists (loft spaces).

Example systems

Studs: Timber studs at 600mm centres

Insulation: Installed between the studs (see below)

Timber fraction: 15%

Wall lining: Gyproc ThermaLine laminate or plasterboard (see below)

U-value Insulation Gyproc ThermaLine laminate / plasterboard

0.24 140mm Isover Frame Batt 35 40mm Gyproc ThermaLine PLUS

0.25 140mm Isover Frame Batt 34 40mm Gyproc ThermaLine BASIC1

0.30 100mm Isover Frame Batt 35 35mm Gyproc ThermaLine PLUS

0.30 140mm Isover Frame Batt 34 12.5mm Gyproc WallBoard DUPLEX

1 Two coats of Gyproc Drywall Sealer are required to provide a vapour control layer.

Roof construction: Tiled or slated roof on tiling battens on breather membrane. Softwood rafters at 600mm centres

Insulation: Installed between the rafters (see below)

Timber fraction: 8.3%

Roof lining: Gyproc ThermaLine laminate (see below)

U-value Insulation Gyproc ThermaLine laminate

0.13 200mm (4 x) 50mm Isover Frame Batt 32 70mm Gyproc ThermaLine SUPER

0.13 200mm (2 x) 100mm Isover Frame Batt 35 70mm Gyproc ThermaLine SUPER

0.16 140mm Isover Frame Batt 34 70mm Gyproc ThermaLine SUPER

0.19 100mm Isover Frame Batt 35 70mm Gyproc ThermaLine SUPER

Wall linings

Roof lining

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The fire resistance and sound insulation performances are for imperforate (e.g. sealed and airtight) partitions, walls and ceilingsincorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quotedperformances are achieved only if British Gypsum components are used throughout, and the Company’s fixing recommendations arestrictly observed. Any variation in the specifications should be checked with British Gypsum.

ConversionWhether insulating a loft space to meet Building Regulations Approved Document L or transformingit to a liveable room-in-the-roof, the following U-value requirements should be met.

L1B Extensions RenovationsWall 0.30 0.35 (0.70)1

Pitched roof with insulation between the rafters (room-in-the-roof) 0.20 0.20 (0.35)1

Pitched roof with insulation between ceiling joists (loft space) 0.16 0.16 (0.35)1

1 If the current element is worse than the U-value quoted in brackets, then they should be upgraded to the adjacent U-value.Cavity walls can be upgraded to just 0.55.

In Scotland, Building Regulations Section 6 stipulates minimum performances typically 0.27 W/m2Kfor walls, 0.20 W/m2K for pitched roofs with insulation between the rafters (room-in-the-roof) and0.16 W/m2K for pitched roofs with insulation between ceiling joists (loft spaces).

Details on suitable external wall linings can be found earlier in this guide.

Care should be taken to ensure any work is carried out in accordance with local planning rules,specifically where there are changes to the ridge or shape of the roof and the type of area the dwellingis located.

Example systems

Insulation between rafters: 170mm Isover Space Saver Roll

Timber fraction: 6.3%

Ceiling lining: Gyproc ThermaLine laminate (see below)

U-value Gyproc ThermaLine laminate

0.16 70mm Gyproc ThermaLine SUPER

Insulation at the ceiling (loft space)

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The fire resistance and sound insulation performances are for imperforate (e.g. sealed and airtight) partitions, walls and ceilingsincorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quotedperformances are achieved only if British Gypsum components are used throughout, and the Company’s fixing recommendations arestrictly observed. Any variation in the specifications should be checked with British Gypsum.

Studs: Timber studs at 600mm centres

Insulation: Installed between the studs (see below)

Timber fraction: 15%

Wall lining: Gyproc ThermaLine laminate or plasterboard (see below)

U-value Insulation Gyproc ThermaLine laminate / plasterboard

0.24 No insulation 90mm Gyproc ThermaLine SUPER

0.24 140mm Isover Frame Batt 35 40mm Gyproc ThermaLine PLUS

0.27 No insulation 80mm Gyproc ThermaLine SUPER

0.27 140mm Isover Frame Batt 35 27mm Gyproc ThermaLine PLUS

0.30 100mm Isover Frame Batt 35 35mm Gyproc ThermaLine PLUS

0.30 140mm Isover Frame Batt 34 12.5mm Gyproc WallBoard DUPLEX

Roof construction: Tiled or slated roof on tiling battens on sarking felt with a 50mm ventilated cavity.Softwood rafters at 600mm centres (see below)

Insulation: Installed between the rafters (see below)

Timber fraction: 8.3%

Roof lining: Gyproc ThermaLine laminate or plasterboard (see below)

U-value Insulation Gyproc ThermaLine laminate

0.19 150mm rafters with 100mm Isover Frame Batt 35 70mm Gyproc ThermaLine SUPER

0.20 125mm rafters with 75mm phenolic foam 60mm Gyproc ThermaLine SUPER

0.20 150mm rafters with 100mm phenolic foam 50mm Gyproc ThermaLine SUPER

Wall linings

Roof lining

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