100mm Recticel Eurothane GP PIR Insulation Board 2.4m x 1.2m - 2.88m2 per sheet
100mm Recticel Eurothane GP is a rigid polyisocyanurate (PIR) insulation board built around a closed-cell PIR core, faced on both sides with a gas diffusion tight, low-emissivity multilayer foil. It is a general purpose board designed for pitched roofs, timber and metal framed walls, and floors, including build-ups that incorporate underfloor heating.
Each board measures 2400mm x 1200mm and is supplied as a single sheet covering 2.88m². At 100mm, it delivers a declared thermal resistance (R-value) of 4.50 m²K/W from a declared thermal conductivity of just 0.022 W/mK, placing it among the stronger-performing PIR options for projects that need meaningful insulation from a single layer.
The board has straight edges that butt tightly together across a run, helping to keep joints closed and limit thermal bridging through the insulation layer. The low-emissivity foil facings work alongside an adjacent air space to support the board's thermal performance, while the closed-cell core resists moisture pick-up and holds its shape over time. A printed grid on both faces guides accurate cutting on site.
In floors, the board can be laid over a damp-proof membrane in solid and suspended constructions and is compatible with underfloor heating systems; in pitched roofs and framed walls it is fitted in a tightly butted, brick-bond pattern. Install in line with the latest Recticel technical guidance and the project specification, and where used to line internal walls, finish with plasterboard rather than plaster or paint applied directly. Suitable for both new build and refurbishment, 100mm Eurothane GP helps raise thermal performance while keeping construction depth in check.
Key Benefits of 100mm Recticel Eurothane GP:
- Rigid PIR insulation board for pitched roofs, framed walls and floors, including underfloor heating build-ups.
- Declared thermal conductivity of 0.022 W/mK for strong thermal performance from a slim profile.
- Declared R-value (thermal resistance) of 4.50 m²K/W at 100mm.
- Straight edges that butt tightly together to help close joints and reduce thermal bridging.
- Gas diffusion tight, low-emissivity foil facings on both sides, with a printed grid to guide cutting.
- Closed-cell PIR core that resists moisture and stays dimensionally stable.
- Compressive strength of at least 120 kPa, supporting use within floor build-ups (check the full system requirements).
- Lightweight and easy to cut with a sharp knife or insulation saw, for quick handling on site.
- Manufactured with blowing agents that have zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP).
- Supplied as a single 2400mm x 1200mm board covering 2.88m².
Good to know:
- Although the closed-cell core is moisture resistant, PIR is not waterproof: store boards flat, dry, off the ground and out of direct sunlight.
- A standard board is 2.4m x 1.2m, giving 2.88m² coverage per board.
- Bespoke cutting is available, find out more here.
- For pitched roof layups, Recticel's pitched roof specification guide is a useful reference.
- For floors, Recticel's floor specification guide covers solid and under-screed build-ups.
A go-to round-number thickness that delivers strong single-layer performance across floors, pitched roofs and framed walls, 100mm Recticel Eurothane GP keeps specification straightforward while supporting better energy efficiency and lasting comfort.
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100mm Recticel Eurothane GP PIR Insulation Board 2.4m x 1.2m - 2.88m2 per sheet
100mm Recticel Eurothane GP PIR Insulation Board 2.4m x 1.2m - 2.88m2 per sheet
100mm Recticel Eurothane GP is a rigid polyisocyanurate (PIR) insulation board built around a closed-cell PIR core, faced on both sides with a gas diffusion tight, low-emissivity multilayer foil. It is a general purpose board designed for pitched roofs, timber and metal framed walls, and floors, including build-ups that incorporate underfloor heating.
Each board measures 2400mm x 1200mm and is supplied as a single sheet covering 2.88m². At 100mm, it delivers a declared thermal resistance (R-value) of 4.50 m²K/W from a declared thermal conductivity of just 0.022 W/mK, placing it among the stronger-performing PIR options for projects that need meaningful insulation from a single layer.
The board has straight edges that butt tightly together across a run, helping to keep joints closed and limit thermal bridging through the insulation layer. The low-emissivity foil facings work alongside an adjacent air space to support the board's thermal performance, while the closed-cell core resists moisture pick-up and holds its shape over time. A printed grid on both faces guides accurate cutting on site.
In floors, the board can be laid over a damp-proof membrane in solid and suspended constructions and is compatible with underfloor heating systems; in pitched roofs and framed walls it is fitted in a tightly butted, brick-bond pattern. Install in line with the latest Recticel technical guidance and the project specification, and where used to line internal walls, finish with plasterboard rather than plaster or paint applied directly. Suitable for both new build and refurbishment, 100mm Eurothane GP helps raise thermal performance while keeping construction depth in check.
Key Benefits of 100mm Recticel Eurothane GP:
- Rigid PIR insulation board for pitched roofs, framed walls and floors, including underfloor heating build-ups.
- Declared thermal conductivity of 0.022 W/mK for strong thermal performance from a slim profile.
- Declared R-value (thermal resistance) of 4.50 m²K/W at 100mm.
- Straight edges that butt tightly together to help close joints and reduce thermal bridging.
- Gas diffusion tight, low-emissivity foil facings on both sides, with a printed grid to guide cutting.
- Closed-cell PIR core that resists moisture and stays dimensionally stable.
- Compressive strength of at least 120 kPa, supporting use within floor build-ups (check the full system requirements).
- Lightweight and easy to cut with a sharp knife or insulation saw, for quick handling on site.
- Manufactured with blowing agents that have zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP).
- Supplied as a single 2400mm x 1200mm board covering 2.88m².
Good to know:
- Although the closed-cell core is moisture resistant, PIR is not waterproof: store boards flat, dry, off the ground and out of direct sunlight.
- A standard board is 2.4m x 1.2m, giving 2.88m² coverage per board.
- Bespoke cutting is available, find out more here.
- For pitched roof layups, Recticel's pitched roof specification guide is a useful reference.
- For floors, Recticel's floor specification guide covers solid and under-screed build-ups.
A go-to round-number thickness that delivers strong single-layer performance across floors, pitched roofs and framed walls, 100mm Recticel Eurothane GP keeps specification straightforward while supporting better energy efficiency and lasting comfort.
Original: $40.35
-65%$40.35
$14.12Product Information
Product Information
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Description
100mm Recticel Eurothane GP is a rigid polyisocyanurate (PIR) insulation board built around a closed-cell PIR core, faced on both sides with a gas diffusion tight, low-emissivity multilayer foil. It is a general purpose board designed for pitched roofs, timber and metal framed walls, and floors, including build-ups that incorporate underfloor heating.
Each board measures 2400mm x 1200mm and is supplied as a single sheet covering 2.88m². At 100mm, it delivers a declared thermal resistance (R-value) of 4.50 m²K/W from a declared thermal conductivity of just 0.022 W/mK, placing it among the stronger-performing PIR options for projects that need meaningful insulation from a single layer.
The board has straight edges that butt tightly together across a run, helping to keep joints closed and limit thermal bridging through the insulation layer. The low-emissivity foil facings work alongside an adjacent air space to support the board's thermal performance, while the closed-cell core resists moisture pick-up and holds its shape over time. A printed grid on both faces guides accurate cutting on site.
In floors, the board can be laid over a damp-proof membrane in solid and suspended constructions and is compatible with underfloor heating systems; in pitched roofs and framed walls it is fitted in a tightly butted, brick-bond pattern. Install in line with the latest Recticel technical guidance and the project specification, and where used to line internal walls, finish with plasterboard rather than plaster or paint applied directly. Suitable for both new build and refurbishment, 100mm Eurothane GP helps raise thermal performance while keeping construction depth in check.
Key Benefits of 100mm Recticel Eurothane GP:
- Rigid PIR insulation board for pitched roofs, framed walls and floors, including underfloor heating build-ups.
- Declared thermal conductivity of 0.022 W/mK for strong thermal performance from a slim profile.
- Declared R-value (thermal resistance) of 4.50 m²K/W at 100mm.
- Straight edges that butt tightly together to help close joints and reduce thermal bridging.
- Gas diffusion tight, low-emissivity foil facings on both sides, with a printed grid to guide cutting.
- Closed-cell PIR core that resists moisture and stays dimensionally stable.
- Compressive strength of at least 120 kPa, supporting use within floor build-ups (check the full system requirements).
- Lightweight and easy to cut with a sharp knife or insulation saw, for quick handling on site.
- Manufactured with blowing agents that have zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP).
- Supplied as a single 2400mm x 1200mm board covering 2.88m².
Good to know:
- Although the closed-cell core is moisture resistant, PIR is not waterproof: store boards flat, dry, off the ground and out of direct sunlight.
- A standard board is 2.4m x 1.2m, giving 2.88m² coverage per board.
- Bespoke cutting is available, find out more here.
- For pitched roof layups, Recticel's pitched roof specification guide is a useful reference.
- For floors, Recticel's floor specification guide covers solid and under-screed build-ups.
A go-to round-number thickness that delivers strong single-layer performance across floors, pitched roofs and framed walls, 100mm Recticel Eurothane GP keeps specification straightforward while supporting better energy efficiency and lasting comfort.


















