75mm Celotex CW4000 Cavity PIR Cavity Insulation Board is a straightforward polyisocyanurate (PIR) insulation board delivering outstanding thermal performance paired with low emissivity foil facing. Available in multiple thicknesses spanning 40mm to 100mm, this product excels in partial fill cavity wall installations.

Celotex has discontinued the following thicknesses: 25mm, 55mm, 65mm, 70mm, 80mm and 90mm. Click to request a quotation and we will recommended an equivalent product.

Product specification

• Brand: Celotex®
• Model: 75mm CW4075
• Thickness: 75mm
• Length: 1200mm
• Width: 450mm
• Pack quantity: 8
• Board Coverage: 0.54m2
• Pack Coverage: 4.32m2
• Dimensions: 1,200mm x 450mm x 75mm
• R-Value: 3.4 m2K/W
• Thermal Conductivity: 0.022 W/mk
• Density: 30Kg/m3
• Material: PIR Insulation (polyisocyanurate)
• Profile: Improved thermal performance
• Vapour Resistivity: 100 MNs/gm
• Building Regulations: Compliant
• Finish: Foil facings
• Shipping method: Articulated Vehicle
• Applications: Cavity Walls ǀ Masonry Walls | 75mm Partial fill insulation
• BBA Certified: Yes (no. 16/5343)
• Features: High-performance Cavity Wall Board
• Manufacturer: Celotex CW4000®

Product Features

• Lightweight 1200 x 450mm boards
• Squared edges
• Low emissivity foil facing
• BBA approved – certificate 16/5343 (Masonry Partial Fill Cavity Walls)

Fire Classification

Euroclass F Reaction to Fire classification, according to BS EN 13501-1. Products with this level of classification are not provided with a rating for smoke emission.

Product Benefits

Thermal Performance

This 75mm Celotex CW4000 board delivers impressive thermal performance with a thermal conductivity rating of 0.022 W/m.K, enabling reduced insulation thickness whilst meeting your target U-values.

High Performance Facer

The low emissivity foil facing boosts thermal performance within sealed cavity air spaces, delivering enhanced U-value results.

Easy to Install

These 75mm celotex cavity insulation boards are lightweight and rigid, ensuring simple transportation, handling, and installation. They're engineered to align with standard wall tie spacing for straightforward fitting.

BBA Certified

75mm Celotex CW4000 partial fill carries BBA certification, verifying its suitability for specified partial fill cavity wall applications when fitted, deployed, and maintained in accordance with certificate requirements. Consult the BBA certification documentation for full details and any limitations.

Key Considerations

When installing 75mm Celotex pir partial fill insulation, confirm the product meets all applicable national Building Regulations and guidance, plus local, national, and other relevant standards for your build or application. This encompasses fire safety compliance and any applicable height restrictions.

More Information on 75mm Celotex CW4000 Cavity PIR

• Manufaturer Link: 75mm Celotex CW4000 Cavity PIR
• Browse our full Celotex Insulation range and refine by thickness or coverage using the left-hand filters. For product suitability advice or bulk order pricing, contact us on +4402038839057 , email sales@insulationbee or use Live Chat - Best value Celotex Insulation in the UK.