65mm Celotex CW4000 Rigid PIR Cavity Insulation Board (pack of 7)
65mm Celotex CW4000 Rigid PIR Cavity Insulation Board (pack of 7)
- Product Code: A1-162
- Delivery Time: Discontinued
- Brand: Celotex (Tech. support: 01473820850)
- Model: 1200mm x 450mm - 3.78m2
Product discontinued.
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Our ratings on 16-07-2026:

4.8 out of 5
65mm Celotex CW4000 Rigid PIR Cavity Insulation Board (pack of 7)
Width: 450mm
Length: 1200mm
Pack Coverage: 3.78m2
Weight/m2: 3.8kg
Thermal Conductivity: 0.023W/mK
R-Value: 2.95m2K/W
Compressive Strength: 120kPa
Surface Spread of Flame: Class 1
65mm 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: Celotex
Model: 1200x2400mm - 2.88m2
Delivery Time: Discontinued
67.5mm Celotex PL4055 is a high-performance thermal insulation board where the PIR insulation is bonded to 12.5mm tapered edge plasterboard. It is manufactured from rigid polyisocyanurate (PIR) using a blend of blowing agents that have zero ozone depletion potential (zero ODP) and low global warming..
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: £27.76
£33.31 inc VAT
Brand: Celotex
Model: 1200x2400mm - 2.88m2
Delivery Time: 1-3 working days
Celotex TB4025 is targeted at cut-to-fit applications between rafters or joists and enables users to achieve lower U-values with a single layer of insulation than has previously been possible. TB4012 is also appropriate for use in floors and walls. With low emissivity foil facings, TB4012 is manufac..
Guide Price: £19.33
£23.20 inc VAT
Brand: Celotex
Model: 1200mm x 450mm - 5.94m2
Delivery Time: 1 - 5 working days
50mm 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..
Guide Price: £72.03
£86.44 inc VAT
Brand: Celotex
Model: 2400x1200mm - 2.88m2
Delivery Time: 1-3 working days
Celotex XR4130 is targeted at cut-to-fit applications between rafters or joists and enables users to achieve lower U-values with a single layer of insulation than has previously been possible. XR4130 is also appropriate for use in floors and walls. With low emissivity foil facings, XR4130 is ma..
Guide Price: £59.00
£70.80 inc VAT
Brand: Celotex
Model: 2400x1200mm - 2.88m2
Delivery Time: 1-3 working days
Celotex XR4120 is targeted at cut-to-fit applications between rafters or joists and enables users to achieve lower U-values with a single layer of insulation than has previously been possible. XR4120 is also appropriate for use in floors and walls. With low emissivity foil facings, XR4120 is ma..
Guide Price: £54.20
£65.04 inc VAT





