• Flat is back

    Introducing three advanced Flat Roofing solutions featuring cutting-edge thinness and thermal performance with solutions for mechanically fixed single ply and built-up applications as well as our new unique product, suitable for single ply bonded applications.


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    Flat Roofing ...by Celotex
  • Celotex. The full picture

    NEW PRODUCT: We've captured the moment again with Celotex CF5000, our new full fill cavity wall solution. The latest addition to our portfolio, CF5000 helps you simplify compliance to UK Building Regulations by achieving a U-value of 0.18 W/m2K, without widening the cavity!

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    Celotex full fill cavity wall solution, Celotex CF5000
  • Sign up to Members Area

    Access BIM files and product datasheets. Create and store U-value calculations. Create Projects. Compare products and convert existing specs to Celotex. Its all in the members area.

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  • Celotex FI5000

    NEW PRODUCT: Introducing the NEW premium performance flooring PIR insulation solution suitable for concrete slab, beam and block, suspended timber and underfloor heating applications. FI5000 provides thermal performance benefits and has been designed with installation efficiency in mind. FInd out about the great product features via the link!

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    New Celotex flooring solution suitable for  concrete slab, beam and block, suspended timber and underfloor heating flooring applications
  • Celotex SL5000

    NEW PRODUCT: Introducing Celotex SL5000, the new concrete soffit liner PIR insulation solution combining premium performance PIR insulation bonded to 6mm calcium silicate, providing additional fire performance. SL5000 has on-site benefits too! Find out more on our site 

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    Introducing Celotex SL5000, a premium performance concrete soffit liner solution
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Celotex is the leading UK PIR thermal insulation provider for the building and construction market.

As the UK market leader in high performance PIR insulation solutions, Celotex remains the insulation specialist of choice. We offer solutions for new build and refurbishment applications for both the commercial and domestic sectors.

Positioned at the heart of energy efficiency measures, Celotex has provided innovative and pioneering solutions to the construction industry since 1925.

Products & Services

U-value Calculator

Enter your required U-value, get the results. Simple.

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Featured Product

FR5000 is our premium performance
PIR solution.

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Celotex Handy Guide

A Professional Guide to PIR Thermal Insulation


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BIM objects

BIM objects now available in all
4 formats.

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All Celotex products have third party approvals.
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Request CPD

PIR Insulation & Part L: Simplifying Compliance.

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