Online U-value Calculator
Instant access to calculating your required insulation thickness and product solution.
U-value CalculatorAre you on target for Part L?
This professional calculator provides a much-improved service, allowing you to specify your desired U-value before immediately calculating the required insulation thickness and product solution.
In order to access the U-value calculator and download your calcualtion pdfs, you must register for the members area.
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.