U Value Calculator

Quickly assess the U-Value calculations for your roof, to identify the operational thermal performance and additional insulation that required for your project

Choose Your Roof Type

Flat Roof (PIR)

Pitched Roof

Please note these are approximate values and an advanced calculation should be performed before specification writing. The following thermal conductivities have been used for the selected insulation types.

Get in touch with your Technical Expert to select the right system for your project

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U Value Calculator

U-value required (W/m²K)

Insulation Thickness required (mm)

Get in touch with your Technical Expert to select the right system for your project

U Value Calculator

U-value required (W/m2K)

Insulation Thickness required (mm)

Get in touch with your Technical Expert to select the right system for your project

U-value required (W/m²K)