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
General application 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
|Thermal Conductivity||0.022 W/m·K|
|Compressive Strength||120 kPa at 10% compression||BS EN 826:2013|
|Vapour Resistance||> 300 MNs/gm|
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.
Celotex reserves the right to change stocked products - while we will do all we can to keep on top of changes, availability and lead times my vary.
Please observe the 'Star Rating' indicators to assess availability.
Generally 1 or 2 days for delivery
Generally 1 to 5 days for delivery
Generally 5 to 10 days for delivery
Generally 5 to 15 days for delivery
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 Certification, Downloads, and Installation Guides
While we have provided Thermal Resistance values for all thicknesses on the Celotex CW4000 datasheet, some thicknesses may not be readily available.
Items highlighted in green are generally held in stock by Celotex.
|Celotex CW4040 40mm||40mm||1.80 m²K/W||1.41 kg/m²|
|Celotex CW4050 50mm||50mm||2.25 m²K/W||1.92 kg/m²|
|Celotex CW4060 60mm||60mm||2.70 m²K/W||2.26 kg/m²|
|Celotex CW4075 75mm||75mm||3.40 m²K/W||2.78 kg/m²|
|Celotex CW4085 85mm||85mm||3.85 m²K/W||3.13 kg/m²|
|Celotex CW4100 100mm||100mm||4.50 m²K/W||3.65 kg/m²|
Standards & Approval
Celotex CW4000 is CFC/HCFC free with zero ODP, low GWP and CE marking. Celotex CW4000 is manufactured in accordance with quality management system ISO 9001 and environmental management system ISO 14001. All products must be installed in accordance with guidance issued by Celotex.
Where building regulation approval is required, you should take advice from your local building control authority and the building designer.
- Celotex CW4000 datasheet
- Celotex CW4000 DoP
- Celotex Handy Guide
- Celotex Health & Safety
- Celotex Handling & Storage