Important Information: For all updates and Celotex announcements since June 2017, please see the links below...  See more

Declared lambda values - Read more >

5000 Class 0 testing - Read more >

Rainscreen cladding & RS5000 - Read more >

Celotex CG5000

Premium Performance PIR Insulation for Partial Fill Cavity Wall Applications.

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IMPORTANT: On 1 September 2017, this product (among others) was temporarily suspended while we investigate the results of recent tests (Parts 6 and 7 of British Standard 476). In addition, we have recently identified a compliance issue relating to our calculation and testing of the declared lambda value of products in the 4000 and 5000 ranges and the Crown-Bond and Crown-Fix products within the Crown Flat Roofing range. Materials relating to this product are for information only.

Please use the link below to read our full statement regarding declared lambda:

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Please use the link below to read our latest statement regarding Class 0:

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Celotex CG5000 is our best in class partial fill cavity wall insulation. Featuring a premium lambda of 0.021 W/mK and Celotex IQ emissivity. CG5000 offers enhanced thermal performance in cavity air spaces and delivers better U-values and thinner solutions to meet the requirements of current legislation such as Part L and BREEAM.

  • Board size: 1200 x 450mm
  • Thickness : (Currently Suspended) 50-100mm
  • Lambda: 0.021 W/mK
  • Facer: Super low emissivity textured aluminium foil facings

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With low emissivity textured aluminium foil facings, Celotex CG5000 is manufactured from rigid polyisocyanurate (PIR) and designed specifically for use with partial fill cavity wall applications. Available in a range of thicknesses to meet the demands of a wide variety of projects, CG5000 is a high performance PIR insulation board that:

  • Has a super low lambda value of 0.021 W/mK delivering better U-values and thinner solutions
  • Offers enhanced thermal performance in cavity air spaces delivering super low emissivity values
  • Achieves an 'A+' rating when compared to the BRE Green Guide
  • Has Class 0 fire performance throughout the entire product in accordance with BS 476
  • Is certified under BBA certificate number 16/5343
  • Is available as a BIM object
  • Has low global warming potential (GWP) and zero ozone depletion potential (ODP)
  • Future proofs the energy performance of new and existing buildings

Did you know?

Not only can you calculate detailed partial fill U-value calculations here on the website, but we also have an experienced team of energy assessors who specialise in SAP calculations, water calculations, airtightness testing plus much more. Energy & Sustainability requirements are getting more and more difficult so let our experienced team take away the hassle & ensure you are completely compliant. Contact today.