Celotex Rafter-Gold

Celotex Rafter-Gold is a combined PIR and insulating breather membrane system for re-roofing existing pitched roofs

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IMPORTANT: We have recently identified a compliance issue relating to our calculation and testing of the lambda value of products in our 4000 and 5000 range and the Crown-Bond and Crown-Fix products within Crown Flat Roofing range. Please note that GA4000 below 100mm manufactured after 15 December 2017 will be marketed from January as Celotex GA3000 with a declared lambda value of 0.023 W/mK. To read the full statement, please visit the Celotex websirte homepage.

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

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Celotex Rafter-Gold featuring TLX Gold is a unique insulation system designed for re-roofing existing pitched roof properties, using a combination of Celotex GA4000 high performance PIR insulation and TLX Gold - the unique intelligent 2in1 insulating breather membrane.

System details:

  • Board size: 1200 x 2400 mm GA4000
  • Thickness : 50 and 75 mm GA4000 | 33 mm TLX Gold 2 in 1 breather membrane
  • Lambda: -
  • Facer: Low emissivity foil facer on GA4000 PIR board

  Celotex Rafter-Gold has the following benefits:

  • Upgrade your pitched roof insulation without raising the roof height
  • Does not require a vapour control layer (VCL)
  • TLX Gold adjusts its rate of breathability according to moisture exposure
  • The system provides excellent thermal comfort
  • Can be used with 100mm or 125mm rafters giving U-values as low as 0.26 w/m²K
  • Both products are BBA certified
  • LABC approved

Celotex are working in partnership with