90mm Celotex GA4000 PIR Insulation Board - GA4090

Guide Price
90mm Celotex GA4000 PIR Insulation Board - GA4090
Guide Price: £42.89 (£51.47 inc VAT)
Price per m2: £14.89/m2 (£17.87 inc VAT)
- Product Code: A1-123
- Delivery Time: 1-3 working days
- Brand: Celotex (Tech. support: 01473820850)
- Model: 2400x1200mm - 2.88m2
- Weight: 8.04kg
Our ratings on 21-08-2026:

4.8 out of 5
90mm Celotex GA4000 PIR Insulation Board - GA4090
Width: 1200mm
Length: 2400mm
Density: 31kg/m3
Weight/m2: 2.79kg
Weight: 8.04kg
Thermal Conductivity: 0.023W/mK
R-Value: 4.05m2K/W
Compressive Strength: 120kPa
90mm Celotex GA4090 is a versatile insulation board designed to address localized thermal bridge issues. With low emissivity foil facings, this board is constructed from durable polyisocyanurate (PIR) using a blend of eco-friendly blowing agents that have zero ozone depletion potential (zero ODP) and a low global warming impact (GWP). Celotex GA4090 finds applications in roofs, walls, and floors.
Note: Also known as GA3090 from January 2018.
APPLICATIONS- Pitched Roofs
- Flat Roofs
- Solid Masonry Walls
- Timber Framed & Steel Framed Systems
- Floors
- Reduces thermal bridging
- Standard board size: 1200mm x 2400mm
- Easy to cut and shape
- Excellent dimensional stability
- Enhanced thermal insulation with low emissivity foil facings
- High performance in cavity air spaces
- Delivers long-term energy savings for buildings
- Zero ODP and low GWP; CE marking compliant with BS EN 13165
- Free from CFCs and HCFCs
- Manufactured in compliance with ISO 9001 quality management and ISO 14001 environmental management standards
- Attains an A+ rating in comparison to the BRE Green Guide 2008
Brand: Celotex
Model: 1200mm x 450mm - 7.56m2
Delivery Time: 1 - 5 working days
40mm Celotex CW4000 is an insulation board aimed specifically at partial fill cavity wall applications. It comprises a polyisocyanurate rigid foam insulation core, with a thermal conductivity of 0.022 W/mK and low emissivity aluminium foil facings on both sides. CW4000 is manufactured from rigid pol..
Guide Price: £77.58
£93.10 inc VAT
Brand: Celotex
Model: 1190x450mm - 3.24m2
Delivery Time: 2 - 4 days
90mm Celotex Thermaclass Cavity Wall 21 is a high performance rigid PIR full fill cavity insulation board with low emissivity foil facings offering enhanced thermal performance (0.021 W/m.K) within cavity air spaces. It can be installed with up to a 10mm residual cavity or as a full fill solut..
Guide Price: £138.02
£165.62 inc VAT
Brand: Celotex
Model: 1200mm x 450mm - 5.94m2
Delivery Time: 1 - 5 working days
50mm Celotex CW4000 is an insulation board aimed specifically at partial fill cavity wall applications. It comprises a polyisocyanurate rigid foam insulation core, with a thermal conductivity of 0.022 W/mK and low emissivity aluminium foil facings on both sides. CW4000 is manufactured from rigi..
Guide Price: £72.03
£86.44 inc VAT
Brand: Celotex
Model: 1200x2400mm -17.28m2
Delivery Time: 5 - 7 days
Celotex XR4200 is targeted at cut-to-fit applications between rafters or joists and enables users to achieve lower U-values with a single layer of insulation than has previously been possible. XR4200 is also appropriate for use in floors and walls. With low emissivity foil facings, XR4200 is ma..
Guide Price: £809.89
£971.87 inc VAT
Brand: Celotex
Model: 1200x2400mm - 2.88m2
Delivery Time: 1-3 working days
Celotex TB4020 is targeted at cut-to-fit applications between rafters or joists and enables users to achieve lower U-values with a single layer of insulation than has previously been possible. TB4012 is also appropriate for use in floors and walls. With low emissivity foil facings, TB4012 is manufac..
Guide Price: £54.02
£64.82 inc VAT
Brand: Celotex
Model: 1200x450mm - 3.78m2
Delivery Time: Discontinued
70mm Celotex CW4000 is an insulation board aimed specifically at partial fill cavity wall applications. It comprises a polyisocyanurate rigid foam insulation core, with a thermal conductivity of 0.022 W/mK and low emissivity aluminium foil facings on both sides. CW4000 is manufactured from rigi..





