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80mm Celotex CW4000 Rigid PIR Cavity Insulation Board (pack of 6)

80mm Celotex CW4000 Rigid PIR Cavity Insulation Board (pack of 6)
  • Product Code: A1-165
  • Delivery Time: Discontinued
  • Brand: Celotex (Tech. support: 01473820850)
  • Model: 1200mm x 450mm - 3.24m2
Product discontinued. Click Get Best Price to request a quotation and we will recommended an equivalent product.
Our ratings on 16-07-2026:
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4.8 out of 5

80mm Celotex CW4000 Rigid PIR Cavity Insulation Board (pack of 6)

Width: 450mm
Length: 1200mm
Pack Coverage: 3.24m2
Weight/m2: 4.59kg
Thermal Conductivity: 0.023W/mK
R-Value: 3.6m2K/W
Compressive Strength: 120kPa
Surface Spread of Flame: Class 1

80mm 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
200mm Celotex XR4000 PIR Insulation Board (pack of 6) - XR4200
Guide Price
Brand: Celotex Model: 1200x2400mm -17.28m2
Delivery Time: 5 - 7 days
Celotex XR4200 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. XR4200 is also appropriate for use in floors and walls. With low emissivity foil facings, XR4200 is ma..
Guide Price: £809.89
£971.87 inc VAT
Brand: Celotex Model: 1200x450mm - 3.78m2
Delivery Time: Discontinued
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..
110mm Celotex XR4000 PIR Insulation Board - XR4110
Guide Price
Brand: Celotex Model: 2400x1200mm - 2.88m2
Delivery Time: 1-3 working days
Celotex XR4110 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. XR4110 is also appropriate for use in floors and walls. With low emissivity foil facings, XR4110 is ma..
Guide Price: £70.92
£85.10 inc VAT
37.5mm Celotex PL4025 - 25mm PIR  Insulation Bonded to 12.5mm Plasterboard (PL4000) 37.5mm Celotex PL4025 - 25mm PIR  Insulation Bonded to 12.5mm Plasterboard (PL4000)
Guide Price
Brand: Celotex Model: 1200x2400mm - 2.88m2
Delivery Time: 2 - 3 working days
Celotex PL4025 is a high performance thermal insulation board where the 25mm PIR insulation is bonded to 12.5mm tapered edge plasterboard. PL4000 range is manufactured from rigid polyisocyanurate (PIR) using a blend of blowing agents that have zero ozone depletion potential (zero ODP) and low global..
Guide Price: £53.06
£63.67 inc VAT
40mm Celotex TB4000 PIR Insulation Board - TB4040
Guide Price
Brand: Celotex Model: 1200x2400mm - 2.88m2
Delivery Time: 1-3 working days
Celotex TB4040 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: £29.38
£35.26 inc VAT
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

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