PIR and XPS insulation manufacturers | Celotex by Soprema

We’ve moved… Celotex is now SOPREMA UK

As of 1st January 2026, Celotex has become SOPREMA UK, bringing its products, specifications, and technical support together within one unified SOPREMA UK portfolio. Everything you need is now in one place. Simply click the link below to access the same product data, certifications and technical support you previously found here, now on the SOPREMA UK website
SOPREMA Website

Discover our U-value calculator

Please refer to our video for a full overview on how to use the U-value calculator.

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Thermaclass Cavity Wall 21

Lower lambda 0.021W/m.K

Reduced heat flow though external walls

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Access BIM drawings and technical tools

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The Celotex U-value calculator gives you instant access to calculating a proposed insulation thickness and product options or giving an indicative calculation on a proposed construction detail.

Easy to access calculations

Store U-values in member project folders for future reference

A simple process making it easier for you to specify insulation solutions

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Celotex in practice

Discover how our range of thermal insulation solutions is implemented in our case studies, including housing, healthcare, commercial, retail, and more.
A career without boundaries

At Celotex, we are committed to our people and their development. Being a part of Soprema, this also opens doors to a career without boundaries, giving our people opportunities to be part of something bigger. Are You In?

Take a look through our library of case studies to inspire your next project.
Celotex in Practice
Join our innovative, passionate and entrepreneurial team whose mission is, creating insulation solutions for the comfort of everyone, in the spaces where we live, work, learn and play.
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