Online Insulation U-value Calculator
The Celotex insulation U-value Calculator gives you instant access to calculating your required insulation thickness and product solution.
U-value CalculatorStart your U-value calculation >
The professional Celotex U-value Calculator is one of the most comprehensive online calculation services in the industry, with a variety of different insulation applications covered.
Specify your desired U-value before immediately calculating the required insulation thickness and project.
"I use the Members Area of the Celotex website on a daily basis. In particular I use the U-value Calculator within the Members Area because I can quickly produce U-value calculations for inclusion within my projects' specification" - Robin Bradbury of Bradbury Design
"Thank you for the online U-value calculator, it is really easy to use. I plan to specify Celotex from now on. It's more commonly available and easier all-round" - Jon Gay, architect from Lochaber
In order to access the Celotex U-value Calculator and download your calculation PDFs, you must register for the Members Area, which is quick and easy!
How to access and use the Celotex U-value Calculator
The following video explains how to access and step through using the online U-value calculator.
Our U-value calculator app is also available from the App Store.
If you require further help or advice on an already created U-value calculation and would like to speak with an advisor, please contact our Celotex Technical Centre on 01473 820850.
Lines are open Monday – Friday, from 8.00am – 5.15pm.
Please note, some products in the U-value calculator may not be available from stock and subject to minimum order quantities and extended lead times.