Knauf Insulation U-Value & PSI Value Calculator
We have worked with Knauf Insulation for a number of years, collaboratively developing their market-leading U-value and PSI value calculator.
- Client
- Knauf Insulation

The brief
Specifiers choosing an insulation product need a U-value for the build-up they have in mind, quickly and in a form they can put in front of Building Control. Doing it by hand is slow, and getting it wrong is expensive.
What we built
A browser-based calculator covering Knauf Insulation's range across the common construction build-ups. Users pick a construction type, adjust the layers and watch the U-value update as they work.
Beyond the U-value itself, the tool assesses condensation risk, gives access to BIM objects and product data, and lets a calculation be saved to a project or downloaded as a record.
Working together
A long-running partnership rather than a one-off build. The calculator has been extended and maintained alongside changes to the product range and to the relevant standards.


Other projects

Knauf Insulation Embodied Carbon Calculator
Knauf Insulation
A free online embodied carbon calculator, a UK first for an insulation manufacturer, built alongside the U-value calculator so specifiers can work out operational and embodied carbon in one place.
View project
SOPREMA Systems Thermal Calculator
SOPREMA UK
A thermal calculator for SOPREMA's PIR, XPS and multifoil insulation across floors, walls, pitched roofs and flat roofs.
View project
URSA U-Value Calculator
URSA (Etex)
An online U-value calculator and condensation risk analysis tool for URSA's thermal insulation range.
View projectGot a project like this in mind?
We build compliance tools, calculators and apps for the construction industry, usually in partnership with the people who will use them.