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 >

Insulation for Basements

High performance PIR insulation boards for projects where the basements walls and floors require insulating.

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IMPORTANT: On 1 September 2017, Celotex took the precautionary measure to temporarily suspend the supply of Celotex FR5000, Celotex CG5000, Celotex CF5000 and Celotex SL5000 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. Due to this issue, the suspension of the 5000 range will continue and now includes the FI5000 and GD5000 products. Materials relating to the 5000 range products are for information only.  Please note that all products in the TB4000, GA4000 below 100mm, PL4000 and CW4000 ranges manufactured after 15 December 2017 will be marketed from January as Celotex 3000 with a declared lambda value of 0.023 W/mK.

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

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

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With energy bills continuously on the increase, homeowners are looking for ways to reduce energy costs. Insulating a basement with Celotex’ high performance PIR insulation can provide better U-values and thinner solutions, as well as super low emissivity and fire resistance properties with our premium product FR5000. 11% of heat lost from a house is through the doors and floors, highlighting the need to insulate the space at the bottom of a home. Insulating a basement will help to achieve compliance to Building Regulations and ultimately save money.

Application Benefits:

  • Tapered edge plasterboard offers the installer maximum installation flexibility and speed
  • Provides an additional, highly thermal efficient living space
  • Provides a return on the initial investment
  • Offers reliable long term energy savings for buildings
  • Provides high performance energy efficient improvements

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