Menu
Menu
Your Cart

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. Click Get Best Price to request a quotation and we will recommended an equivalent product.
Our ratings on 10-08-2026:
Google My Business Reviews
4.8 out of 5
To GET BEST PRICE for this product only fill below:
Need a quote for more products? and continue browsing to find other materials needed.

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
72.5mm Celotex PL4060 - 60mm PIR  Insulation Bonded to 12.5mm Plasterboard (PL4000) 72.5mm Celotex PL4060 - 60mm PIR  Insulation Bonded to 12.5mm Plasterboard (PL4000)
Guide Price
Brand: Celotex Model: 1200x2400mm - 2.88m2
Delivery Time: 2 - 3 working days
72.5mm Celotex PL4060 is a high-performance thermal insulation board where the 60mm 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: £75.76
£90.91 inc VAT
20mm Celotex TB4000 PIR Insulation Board - TB4020
Guide Price
Brand: Celotex Model: 1200x2400mm - 2.88m2
Delivery Time: 1-3 working days
Celotex TB4020 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: £54.02
£64.82 inc VAT
90mm Celotex Thermaclass Cavity Wall 21 - Rigid PIR Full Fill Cavity Insulation Board (pack of 6)
Guide Price
Brand: Celotex Model: 1190x450mm - 3.24m2
Delivery Time: 2 - 4 days
90mm Celotex Thermaclass Cavity Wall 21 is a high performance rigid PIR full fill cavity insulation board with low emissivity foil facings offering enhanced thermal performance (0.021 W/m.K) within cavity air spaces. It can be installed with up to a 10mm residual cavity or as a full fill solut..
Guide Price: £138.02
£165.62 inc VAT
165mm Celotex XR4000 PIR Insulation Board (pack of 6) - XR4165
Guide Price
Brand: Celotex Model: 1200x2400mm -17.28m2
Delivery Time: 3 - 7 days
Celotex XR4165 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. XR4165 is also appropriate for use in floors and walls. With low emissivity foil facings, XR4165 is ma..
Guide Price: £667.72
£801.26 inc VAT
120mm Celotex XR4000 PIR Insulation Board - XR4120
Guide Price
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
62.5mm Celotex PL4050 - 50mm PIR  Insulation Bonded to 12.5mm Plasterboard (PL4000) 62.5mm Celotex PL4050 - 50mm PIR  Insulation Bonded to 12.5mm Plasterboard (PL4000)
Guide Price
Brand: Celotex Model: 1200x2400mm - 2.88m2
Delivery Time: 2 - 3 working days
62.5mm Celotex PL4050 is a high-performance thermal insulation board with 50mm PIR insulation bonded to 12.5mm tapered edge plasterboard. It is made from rigid polyisocyanurate (PIR) using blowing agents that have zero ozone depletion potential (zero ODP) and low global warming potential (GWP).N..
Guide Price: £72.69
£87.23 inc VAT
This product is listed in the following categories and systems (click to show).