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50mm Celotex CW4050 - Rigid PIR Cavity Insulation Board (pack of 11) CW4000

50mm Celotex CW4050 - Rigid PIR Cavity Insulation Board (pack of 11) CW4000
Guide Price
50mm Celotex CW4050 - Rigid PIR Cavity Insulation Board (pack of 11) CW4000
Guide Price: £72.03 (£86.44 inc VAT)
Price per m2: £12.13/m2 (£14.55 inc VAT)
10 or more £70.85 (£85.02 inc VAT)
15 or more £69.69 (£83.63 inc VAT)
20 or more £67.89 (£81.47 inc VAT)
  • Product Code: A1-159
  • Delivery Time: 1 - 5 working days
  • Brand: Celotex
  • (Tech. support: 01473820850)
  • Model: 1200mm x 450mm - 5.94m2
  • Weight: 9.36kg
Our ratings on 17-04-2026:
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4.8 out of 5
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50mm Celotex CW4050 - Rigid PIR Cavity Insulation Board (pack of 11) CW4000

Width: 450mm
Length: 1200mm
Density: 31.5kg/m3
Weight/m2: 1.58kg
Weight: 9.36kg
Thermal Conductivity: 0.023W/mK
R-Value: 2.25m2K/W
Compressive Strength: 120kPa

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 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: £736.26
£883.51 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..
100mm Celotex CW4100 - Rigid PIR Cavity Insulation Board (pack of 6) CW4000
Guide Price
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
Brand: Celotex Model: 1200mm x 450mm - 2.70m2
Delivery Time: 1 - 5 working days
90mm 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..
30mm Celotex TB4000 PIR Insulation Board - TB4030
Guide Price
Brand: Celotex Model: 1200x2400mm - 2.88m2
Delivery Time: 1-3 working days
Celotex TB4030 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: £15.01
£18.01 inc VAT
80mm Celotex GA4000 PIR Insulation Board - GA4080
Guide Price
Brand: Celotex Model: 2400x1200mm - 2.88m2
Delivery Time: 1-3 working days
80mm Celotex GA4080 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: £29.77
£35.72 inc VAT

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