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Celotex 75mm Cavity Wall Insulation Board CW4075 1.2m x 450mm- 4.32m2 Pack

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£67.00 Incl. VAT
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Product Description

Celotex CW4000 is an insulation board aimed specifically at partial fill cavity wall applications. With low emissivity foil facings, 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).

As a high performance insulation board featuring low emissivity foil facings, Celotex CW4000 offers enhanced thermal performance as cavity wall insulation when compared to typical PIR products.

Celotex CW4000 enhanced features deliver thinner solutions that meet target U-values as required by Building Regulations including Part L and BREEAM.

To alleviate issues with stock availability, you may been sent an alternate, identically performing brand to that which you have ordered.


Length: 1.2m.
Width: 450mm.
Thickness: 75mm.
Board coverage: 0.54m2.
Pack quantity: 8x boards.
Pack coverage: 4.32m2.
Thermal conductivity: 0.022 W/mK.
Thermal resistance: 3.40 m2K/W.
Weight: 2.34 kg/m2.
Fire rating: Class 1 - BS 476 (part 7).
Certification: BBA certified.
Facer: low emissivity foil facings.

With Celotex CW4000 you are specifying an insulation board that:

  • Comes in conveniently sized boards for installation between cavity wall ties.
  • Achieves an A+ rating when compared to the BRE Green Guide.
  • Is certified under BBA certificate number 94/3080.
  • Includes low emissivity foil facings giving improved thermal insulation performance within cavity air spaces.
  • Future proofs the energy performance of new and existing buildings.


Celotex CW4000 is specifically for use in partial-fill cavity wall applications.

CW4000 Specification Clause

The insulation shall be Celotex CW4000 - 50mm thick comprising a polyisocyanurate rigid foam insulation core with a thermal conductivity of 0.022 W/mK with low emissivity aluminium foil facings on both sides. Celotex CW4000 is CFC/HCFC free with zero ODP and low GWP and CE marking compliance to BS EN 13165. Celotex CW4000 is manufactured in accordance with quality management system ISO 9001 and environmental management system ISO 14001. Celotex CW4000 achieves an A+ rating when compared to the BRE Green Guide. All products must be installed in accordance with instructions issued by Celotex.

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WIDTH 450mm LENGTH 1200mm THICKNESS 75mm


Material PIR Product Type Board Thermal Conductivity 0.022 W/mK Edging Square Edge
Facing Foil

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