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 Crown-Fix insulation for mechanically fixed flat roofs

High performance PIR insulation specifically designed for mechnically fixed single ply flat roofing applications

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

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Celotex Crown-Fix is a brand new product for use in flat roof systems. Representing the next phase of Celotex innovation, Crown-Fix is a high performance rigid polyisocyanurate (PIR) insulation which delivers excellent dimensional stability and added robustness in a mechanically fixed single ply flat roofing system

  • Board size: 1200 x 2400mm
  • Thickness : 50-140mm
  • Lambda: 0.022 W/mK
  • Facer: Aluminium foil facers

Celotex Crown-Fix flat roof PIR insulation has the following product features:

  • Low lambda 0.022W/mK offering high thermal performance
  • Suitable for mechnically fixed single ply membranes
  • Excellent compressive strength, giving it increased dimensional stability and added robustness
  • An extensive package of online support, tools and aftercare

Did you know?

Not only can you calculate detailed flat roofing U-value calculations here on the website, but we also have an experienced team of energy assessors who specialise in SAP or SBEM 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.