Free Online Insulation U-value Calculator
Our U-value calculator gives you instant access to calculating a proposed insulation thickness and product selection or giving an indicative calculation on a proposed construction detail.
U-value Calculator
Start your U-value calculation >Our free online U-value calculator covers a variety of different insulation applications for our Isover products.
Specify your desired U-value before immediately calculating the required insulation thickness and product selection, using our multi-application calculator.
Work through your own construction detail to get an early indication of the U-value that this might achieve.
To access the U-value insulation calculator, and download your calculation PDFs, you must log in to the Members Area, if you’re not already a member, it is quick and easy to register!
Register now to use the Calculator
Further information
If you require further help or guidance on an already created U-value calculation or for bespoke calculations and would like to speak with an advisor, please contact our Technical Support Team on 0800 322 555.
Lines are open Monday – Friday, from 9.00am – 5pm.
Please note, some products in the U-value calculator may not be available from stock, or be subject to minimum order quantities and extended lead times.