70mm Celotex CW4000 Rigid PIR Cavity Insulation Board (pack of 7)
70mm Celotex CW4000 Rigid PIR Cavity Insulation Board (pack of 7)
- Product Code: A1-163
- Delivery Time: 1 - 5 working days
- Brand: Celotex (Tech. support: 01473820850)
- Model: 1200x450mm - 3.78m2
Product discontinued.
Click Get Best Price to request a quotation and we will recommended an equivalent product.
Our ratings on 13-05-2026:
4.8 out of 5
- Description
- Related Products
- Substitute Products
- PDFs (technical specs)
- More from this brand
- Reviews
70mm Celotex CW4000 Rigid PIR Cavity Insulation Board (pack of 7)
Width: 450mm
Length: 1200mm
Pack Coverage: 3.78m2
Weight/m2: 4.06kg
Thermal Conductivity: 0.023W/mK
R-Value: 3.15m2K/W
Compressive Strength: 120kPa
Surface Spread of Flame: Class 1
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 rigid polyisocyanurate (PIR) using a blend of blowing agents that have zero ozone depletion potential (zero ODP) and low global warming potential (GWP).
Note: Would be known as CW3000 from January 2018.
APPLICATION
Celotex CW4000 is specifically for use in partial-fill cavity wall applications.

CHARACTERISTICS
- Is easy to fit between wall ties using cavity tie clips for retention
- Comes in thicknesses ranging from 25mm-100mm
- 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
- Has excellent dimensional stability
- Provides reliable long term energy savings for buildings
CERTIFICATION
- The insulation component of Celotex CW4000 is A+ rated when compared to the BRE Green Guide 2008
- Celotex CW4000 is CFC/HCFC free with zero ozone depletion potential (ODP) and low global warming potential (GWP)
- Celotex CW4000 received CE marking compliance to BS EN 13165:2001
- The board is manufactured in accordance with quality management systems with BS EN ISO 9001:2000 by Celotex Limited
Brand: Iko
Model: 1200mm x 2400mm - 20.16m2
Delivery Time: 2 - 3 working days
70mm IKO Enertherm ALU PIR Rigid Insulation Board is a versatile insulation board with a rigid polyisocyanurate (PIR) foam core, clad on both sides with reflective aluminium. The seven-layer gas-tight aluminium lamination enhances resistance to fire and water ingress. It’s made without CFC, HCFC, o..
Brand: Celotex
Model: 1200x2400mm - 2.88m2
Delivery Time: 1 - 5 working days
77.5mm Celotex PL4065 is a high performance thermal insulation board where the 65mm PIR insulation is bonded to 12.5mm tapered edge plasterboard. PL4000 is manufactured from rigid polyisocyanurate (PIR) using a blend of blowing agents that have zero ozone depletion potential (zero ODP) and low globa..
Guide Price: £89.54
£107.45 inc VAT
Brand: Celotex
Model: 1200x2400 - 2.88m2
Delivery Time: 1 - 5 working days
Celotex PL4015 is a high performance thermal insulation board where the 15mm PIR insulation is bonded to 12.5mm tapered edge plasterboard. PL4015 is manufactured from rigid polyisocyanurate (PIR) using a blend of blowing agents that have zero ozone depletion potential (zero ODP) and low global warmi..
Brand: Celotex
Model: 1200x450mm - 3.78m2
Delivery Time: 1 - 5 working days
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..
Brand: Celotex
Model: 2400x1200mm - 2.88m2
Delivery Time: 1-3 working days
75mm Celotex GA4075 is a multi-purpose insulation board that provides a solution to overcome localized thermal bridges. Featuring a low emissivity foil facings, this board has been manufactured from tough polyisocyanurate (PIR) using a perfect mix of certain blowing agents which have zero ozone depl..
Guide Price: £27.06
£32.47 inc VAT
Brand: Celotex
Model: 2400x1200mm - 2.88m2
Delivery Time: 1-3 working days
50mm Celotex GA4050 is a multi-purpose insulation board that provides a solution to overcome localized thermal bridges. Featuring a low emissivity foil facings, this board has been manufactured from tough polyisocyanurate (PIR) using a perfect mix of certain blowing agents which have zero ozone depl..
Guide Price: £24.52
£29.42 inc VAT
Brand: Celotex
Model: 1200mm x 450mm - 3.24m2
Delivery Time: 2 - 3 working days
100mm 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 rig..
Guide Price: £68.22
£81.86 inc VAT