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Welcome to Celotex Insulation

Welcome to the home of Celotex Limited, the UK pioneers of manufacturing high performance polyisocyanurate (PIR) thermal insulation boards for use in the construction industry.

U-value Calculator - version 2009

The 2009 version of the Celotex online U-value calculator works two ways - you can enter the desired U-value to calculate the thickness of insulation required, or input your chosen insulation to calculate the achieveable U-value. Either way, it ensures you get the right answer first time. Click here to access the U-value Calculator

Energy Performance

The Celotex Technical Centre can provide you with all your SAP and Energy Performance Certificate requirements. Read more

We know insulation inside and out

When you specify Celotex insulation, you are accessing an unrivalled product and service package that has evolved through a process of constant innovation spanning eight decades.

The evolution continues with intensive product development across our highly specialised Celotex product range. Our newly expanded range provides thermal insulation solutions that fully meet the requirements of current legislation as well as the demands of building professionals, specifiers and users.

These developments are represented in our depth of product offer. Celotex offers an unrivalled range of thicknesses - from as thin as 12mm through to 200mm, all available from stock - with products suitable for pitched and flat roofs, walls and floors. We now also offer a plasterboard thermal laminate and have a Class O product range for when project specifications demand enhanced fire performance. In addition, a range of accessory products has been added to our product portfolio to make the installation of Celotex even easier.

Our product range coupled with our leading Celotex Technical Centre and our industry-leading sustainability stance makes Celotex the insulation specialist of choice.

Hopefully you will find all the information you need on this website, but if you would like further details or technical support, please refer to the Contact Us page.

Latest News

Updated NBS Plus Listing
Celotex has updated its NBS Plus listing. Read More

The Perfect Partnership!
Celotex has combined its industry leading PIR insulation with plasterboard to create the ultimate 2-in-1 product – ... Read More

A+ Rating in 2008 Green Guide
Celotex has scored an A+ rating in the BRE's 2008 Green Book Live. Read More

Celotex Key Pages
Applications
Pitched Roof Insulation
Flat Roof insulation
Wall Insulation
Floor insulation
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Products
Celotex FR4000
Celotex TD3000
Celotex XR3000
Celotex PL3000
Celotex EL3000
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BBA Certificates
U-Value Calculator
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