52.5mm Celotex PL4040 PIR Insulated Plasterboard 2.4m x 1.2m - 2.88m2 per board
52.5mm Celotex PL4040 is a thermal laminate, a board that combines insulation and plasterboard in a single sheet. It is built from a 40mm rigid polyisocyanurate (PIR) core bonded to a 12.5mm tapered edge plasterboard, giving an overall thickness of 52.5mm. In the PL4000 range the '40' in the PL4040 code refers to the 40mm PIR core, the layer doing the insulating work behind the plasterboard face. It is used to dry line and insulate internal walls and roof slopes in one operation, and the extra core depth over the entry board makes it a common pick for solid masonry wall upgrades and refurbishment work where a thermal target has to be met.
With a thermal conductivity (lambda) of 0.022 W/mK, the 40mm core gives the board an R-value (thermal resistance) of 1.85 m²K/W, measured including the plasterboard, a useful step up from the entry 37.5mm board. Each sheet measures 2400mm x 1200mm, covers 2.88m² and is sold individually, weighing around 10.46 kg/m². Sitting second in the PL4000 range, it keeps the internal build-up relatively slim while giving more thermal resistance than the 37.5mm board, with the 62.5mm, 72.5mm and 77.5mm boards available where a higher figure is needed.
Because the insulation and the lining come bonded as one board, a single fixing operation does the work of two stages, insulating and dry lining the wall or ceiling in one pass and removing a separate boarding stage. The plasterboard face is also the surface the installer finishes, so the wall is ready for jointing and skim once the boards are up.
52.5mm Celotex PL4040 is specified for internal dry lining on solid masonry and timber frame walls, and beneath pitched roof rafters and flat roof joists as the inner lining layer. On masonry it is commonly direct-bonded with dot and dab adhesive or mechanically fixed to treated battens, and it suits both refurbishment and new build where an existing or planned wall needs to reach a thermal target. Install it to the latest Celotex technical guidance, the project specification and current Building Regulations, including fire requirements, any ventilation the roof build-up calls for, and the limit on external wall use. Correctly detailed, it helps control the risk of surface condensation on the warm side of the wall and supports lasting reductions in heat loss. PIR insulated plasterboard of this type should not be used in the external walls of buildings over 11 metres in height.
Key Benefits of Celotex PL4040:
- Thermal laminate built from a 40mm rigid polyisocyanurate (PIR) core bonded to 12.5mm tapered edge plasterboard, 52.5mm overall.
- R-value (thermal resistance) of 1.85 m²K/W including the plasterboard, a step up from the 37.5mm board.
- Low thermal conductivity of 0.022 W/mK, so the added thermal resistance comes with only a modest increase in depth.
- Dry lines and insulates in one fixing operation, removing a separate plasterboarding stage.
- Direct-bonds to masonry by dot and dab, or fixes mechanically to battens and studwork.
- Tapered edge plasterboard ready for taped, filled joints and a skim or paint finish.
- A common choice for internal solid wall upgrades and refurbishment that has to meet a thermal target.
- Euroclass B-s1, d0 reaction to fire to BS EN 13501-1.
- BRE Green Guide A+ rating, which can support BREEAM credits.
- Blowing agent with zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP), CFC/HCFC free.
- BBA certified (Certificate 16/5357) for plasterboard thermal laminate applications.
- 2400mm x 1200mm board covering 2.88m², sold individually, at around 10.46 kg/m².
Good to know:
- The 52.5mm overall thickness is a 40mm rigid PIR core plus a 12.5mm tapered edge plasterboard.
- On solid masonry the board is usually dot-and-dabbed or fixed to battens; follow Celotex guidance on the right method and any membrane or batten detail for the wall.
- Butt the tapered edges together, then scrim-tape and fill the joints before skimming or decorating.
- The bonded plasterboard face is the finished internal surface and carries the board's Euroclass B-s1, d0 reaction-to-fire performance.
- Allow for the weight when handling: at around 10.46 kg/m² a full board is heavier than the 37.5mm board, so it is a two-person lift in most cases.
- Check vapour control for the specific build-up and refer to current Celotex guidance on managing interstitial condensation.
- Celotex PL4040 should not be used in the external walls of buildings over 11 metres in height; confirm against current Building Regulations.
- Store boards flat, off the ground and under cover, keeping the plasterboard face dry before fixing.
As the first real step up in the PL4000 range, 52.5mm Celotex PL4040 puts a stronger single-board thermal resistance behind a finished plaster face, which is what makes it a steady choice for internal and solid wall upgrades that have a U-value to hit.
If depth is not a concern on your build, you can reach comparable R-values for less outlay: we also stock Tekwarm HP+ Insulated Plasterboard, which trades a thicker build-up for a lower price, alongside Tekwarm PIR Insulated Plasterboard as a like-for-like laminate alternative to Celotex PL4000. The full Celotex PL4040 datasheet is available to download for the complete specification and installation detail.
Important Notice: Please be aware that during periods of high demand, we reserve the right to provide alternative brands that meet the same specifications and quality standards as the products you originally ordered.
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52.5mm Celotex PL4040 PIR Insulated Plasterboard 2.4m x 1.2m - 2.88m2 per board
52.5mm Celotex PL4040 PIR Insulated Plasterboard 2.4m x 1.2m - 2.88m2 per board
52.5mm Celotex PL4040 is a thermal laminate, a board that combines insulation and plasterboard in a single sheet. It is built from a 40mm rigid polyisocyanurate (PIR) core bonded to a 12.5mm tapered edge plasterboard, giving an overall thickness of 52.5mm. In the PL4000 range the '40' in the PL4040 code refers to the 40mm PIR core, the layer doing the insulating work behind the plasterboard face. It is used to dry line and insulate internal walls and roof slopes in one operation, and the extra core depth over the entry board makes it a common pick for solid masonry wall upgrades and refurbishment work where a thermal target has to be met.
With a thermal conductivity (lambda) of 0.022 W/mK, the 40mm core gives the board an R-value (thermal resistance) of 1.85 m²K/W, measured including the plasterboard, a useful step up from the entry 37.5mm board. Each sheet measures 2400mm x 1200mm, covers 2.88m² and is sold individually, weighing around 10.46 kg/m². Sitting second in the PL4000 range, it keeps the internal build-up relatively slim while giving more thermal resistance than the 37.5mm board, with the 62.5mm, 72.5mm and 77.5mm boards available where a higher figure is needed.
Because the insulation and the lining come bonded as one board, a single fixing operation does the work of two stages, insulating and dry lining the wall or ceiling in one pass and removing a separate boarding stage. The plasterboard face is also the surface the installer finishes, so the wall is ready for jointing and skim once the boards are up.
52.5mm Celotex PL4040 is specified for internal dry lining on solid masonry and timber frame walls, and beneath pitched roof rafters and flat roof joists as the inner lining layer. On masonry it is commonly direct-bonded with dot and dab adhesive or mechanically fixed to treated battens, and it suits both refurbishment and new build where an existing or planned wall needs to reach a thermal target. Install it to the latest Celotex technical guidance, the project specification and current Building Regulations, including fire requirements, any ventilation the roof build-up calls for, and the limit on external wall use. Correctly detailed, it helps control the risk of surface condensation on the warm side of the wall and supports lasting reductions in heat loss. PIR insulated plasterboard of this type should not be used in the external walls of buildings over 11 metres in height.
Key Benefits of Celotex PL4040:
- Thermal laminate built from a 40mm rigid polyisocyanurate (PIR) core bonded to 12.5mm tapered edge plasterboard, 52.5mm overall.
- R-value (thermal resistance) of 1.85 m²K/W including the plasterboard, a step up from the 37.5mm board.
- Low thermal conductivity of 0.022 W/mK, so the added thermal resistance comes with only a modest increase in depth.
- Dry lines and insulates in one fixing operation, removing a separate plasterboarding stage.
- Direct-bonds to masonry by dot and dab, or fixes mechanically to battens and studwork.
- Tapered edge plasterboard ready for taped, filled joints and a skim or paint finish.
- A common choice for internal solid wall upgrades and refurbishment that has to meet a thermal target.
- Euroclass B-s1, d0 reaction to fire to BS EN 13501-1.
- BRE Green Guide A+ rating, which can support BREEAM credits.
- Blowing agent with zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP), CFC/HCFC free.
- BBA certified (Certificate 16/5357) for plasterboard thermal laminate applications.
- 2400mm x 1200mm board covering 2.88m², sold individually, at around 10.46 kg/m².
Good to know:
- The 52.5mm overall thickness is a 40mm rigid PIR core plus a 12.5mm tapered edge plasterboard.
- On solid masonry the board is usually dot-and-dabbed or fixed to battens; follow Celotex guidance on the right method and any membrane or batten detail for the wall.
- Butt the tapered edges together, then scrim-tape and fill the joints before skimming or decorating.
- The bonded plasterboard face is the finished internal surface and carries the board's Euroclass B-s1, d0 reaction-to-fire performance.
- Allow for the weight when handling: at around 10.46 kg/m² a full board is heavier than the 37.5mm board, so it is a two-person lift in most cases.
- Check vapour control for the specific build-up and refer to current Celotex guidance on managing interstitial condensation.
- Celotex PL4040 should not be used in the external walls of buildings over 11 metres in height; confirm against current Building Regulations.
- Store boards flat, off the ground and under cover, keeping the plasterboard face dry before fixing.
As the first real step up in the PL4000 range, 52.5mm Celotex PL4040 puts a stronger single-board thermal resistance behind a finished plaster face, which is what makes it a steady choice for internal and solid wall upgrades that have a U-value to hit.
If depth is not a concern on your build, you can reach comparable R-values for less outlay: we also stock Tekwarm HP+ Insulated Plasterboard, which trades a thicker build-up for a lower price, alongside Tekwarm PIR Insulated Plasterboard as a like-for-like laminate alternative to Celotex PL4000. The full Celotex PL4040 datasheet is available to download for the complete specification and installation detail.
Important Notice: Please be aware that during periods of high demand, we reserve the right to provide alternative brands that meet the same specifications and quality standards as the products you originally ordered.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
52.5mm Celotex PL4040 is a thermal laminate, a board that combines insulation and plasterboard in a single sheet. It is built from a 40mm rigid polyisocyanurate (PIR) core bonded to a 12.5mm tapered edge plasterboard, giving an overall thickness of 52.5mm. In the PL4000 range the '40' in the PL4040 code refers to the 40mm PIR core, the layer doing the insulating work behind the plasterboard face. It is used to dry line and insulate internal walls and roof slopes in one operation, and the extra core depth over the entry board makes it a common pick for solid masonry wall upgrades and refurbishment work where a thermal target has to be met.
With a thermal conductivity (lambda) of 0.022 W/mK, the 40mm core gives the board an R-value (thermal resistance) of 1.85 m²K/W, measured including the plasterboard, a useful step up from the entry 37.5mm board. Each sheet measures 2400mm x 1200mm, covers 2.88m² and is sold individually, weighing around 10.46 kg/m². Sitting second in the PL4000 range, it keeps the internal build-up relatively slim while giving more thermal resistance than the 37.5mm board, with the 62.5mm, 72.5mm and 77.5mm boards available where a higher figure is needed.
Because the insulation and the lining come bonded as one board, a single fixing operation does the work of two stages, insulating and dry lining the wall or ceiling in one pass and removing a separate boarding stage. The plasterboard face is also the surface the installer finishes, so the wall is ready for jointing and skim once the boards are up.
52.5mm Celotex PL4040 is specified for internal dry lining on solid masonry and timber frame walls, and beneath pitched roof rafters and flat roof joists as the inner lining layer. On masonry it is commonly direct-bonded with dot and dab adhesive or mechanically fixed to treated battens, and it suits both refurbishment and new build where an existing or planned wall needs to reach a thermal target. Install it to the latest Celotex technical guidance, the project specification and current Building Regulations, including fire requirements, any ventilation the roof build-up calls for, and the limit on external wall use. Correctly detailed, it helps control the risk of surface condensation on the warm side of the wall and supports lasting reductions in heat loss. PIR insulated plasterboard of this type should not be used in the external walls of buildings over 11 metres in height.
Key Benefits of Celotex PL4040:
- Thermal laminate built from a 40mm rigid polyisocyanurate (PIR) core bonded to 12.5mm tapered edge plasterboard, 52.5mm overall.
- R-value (thermal resistance) of 1.85 m²K/W including the plasterboard, a step up from the 37.5mm board.
- Low thermal conductivity of 0.022 W/mK, so the added thermal resistance comes with only a modest increase in depth.
- Dry lines and insulates in one fixing operation, removing a separate plasterboarding stage.
- Direct-bonds to masonry by dot and dab, or fixes mechanically to battens and studwork.
- Tapered edge plasterboard ready for taped, filled joints and a skim or paint finish.
- A common choice for internal solid wall upgrades and refurbishment that has to meet a thermal target.
- Euroclass B-s1, d0 reaction to fire to BS EN 13501-1.
- BRE Green Guide A+ rating, which can support BREEAM credits.
- Blowing agent with zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP), CFC/HCFC free.
- BBA certified (Certificate 16/5357) for plasterboard thermal laminate applications.
- 2400mm x 1200mm board covering 2.88m², sold individually, at around 10.46 kg/m².
Good to know:
- The 52.5mm overall thickness is a 40mm rigid PIR core plus a 12.5mm tapered edge plasterboard.
- On solid masonry the board is usually dot-and-dabbed or fixed to battens; follow Celotex guidance on the right method and any membrane or batten detail for the wall.
- Butt the tapered edges together, then scrim-tape and fill the joints before skimming or decorating.
- The bonded plasterboard face is the finished internal surface and carries the board's Euroclass B-s1, d0 reaction-to-fire performance.
- Allow for the weight when handling: at around 10.46 kg/m² a full board is heavier than the 37.5mm board, so it is a two-person lift in most cases.
- Check vapour control for the specific build-up and refer to current Celotex guidance on managing interstitial condensation.
- Celotex PL4040 should not be used in the external walls of buildings over 11 metres in height; confirm against current Building Regulations.
- Store boards flat, off the ground and under cover, keeping the plasterboard face dry before fixing.
As the first real step up in the PL4000 range, 52.5mm Celotex PL4040 puts a stronger single-board thermal resistance behind a finished plaster face, which is what makes it a steady choice for internal and solid wall upgrades that have a U-value to hit.
If depth is not a concern on your build, you can reach comparable R-values for less outlay: we also stock Tekwarm HP+ Insulated Plasterboard, which trades a thicker build-up for a lower price, alongside Tekwarm PIR Insulated Plasterboard as a like-for-like laminate alternative to Celotex PL4000. The full Celotex PL4040 datasheet is available to download for the complete specification and installation detail.
Important Notice: Please be aware that during periods of high demand, we reserve the right to provide alternative brands that meet the same specifications and quality standards as the products you originally ordered.
