High performance rigid Polyisocyanurate (PIR) partial fill cavity wall insulation board.
Comes in conveniently sized boards for installation between cavity wall ties.
Includes low emissivity foil facings giving improved thermal insulation performance within cavity air spaces.
Can be used to provide energy performance of new and existing buildings.
Provides reliable long term energy savings for buildings.
Thicknesses and Availability:
Available in most popular thicknesses at most depots; short lead-times may apply if we need to get stock in before delivering to site.
This CW4000 Range includes the following available product thicknesses: 40mm, 60mm, 70mm, 75mm, 80mm, 90mm and 100mm.
General information about Celotex CW4000
Partial fill cavity wall insulating board
Celotex's high performance polyisocyanurate (PIR) foam board, CW4000, is suitable for use in partial fill cavity wall applications with a minimum 50mm residual cavity.
Celotex CW4000 is manufactured from rigid polyisocyanurate (PIR) using a blowing agent that has zero ozone depletion potential (zero ODP) and low global warming potential (GWP).
Faced on both sides with a low emissivity aluminium foil, autohesively bonded to the insulation core during manufacture.
|Thickness||40mm to 100mm|
Buy Celotex CW4000
Reasonable stock levels are generally held at most of our depots. In some geographic locations, depots may stock alternates, however, we will contact you to discuss before proceeding with the order.
Where products need to be brought in from Celotex, please allow approx. 1 week for delivery.
- Generally 1 or 3 working days for delivery
- Generally 1 to 5 working days for delivery
- Generally 5 to 10 working days for delivery
- Special request or made to order item, allow extended lead times. Minimum order levels may apply.
- Please call to check availability and approximate lead times
Product availability depends upon stock levels at closest depot and delivery logistics to geographic locations
Product Performance and Guides
Product Performance, Manufacturer Downloads, and Installation Guides
|Thermal Conductivity||0.022 W/mK|
|Compressive Strength||120 kPa at 10% compression||BS EN 826:2013|
|Vapour Resistance||> 300 MNs/gm|
|Celotex CW4040||40mm||1.80 m²K/W||1.41 kg/m²|
|Celotex CW4050||50mm||2.25 m²K/W||1.92 kg/m²|
|Celotex CW4060||60mm||2.70 m²K/W||2.26 kg/m²|
|Celotex CW4075||75mm||3.40 m²K/W||2.78 kg/m²|
|Celotex CW4085||85mm||3.85 m²K/W||3.13 kg/m²|
|Celotex CW4100||100mm||4.50 m²K/W||3.65 kg/m²|
Please visit the Celotex website for product certificates.