Specifier keys

• Radon is a radioactive noble gas, odourless, colourless and tasteless, highly mobile.
• Several membranes certified as protective barriers against radon (Technical Building Code of 27/12/19).
• Impermax 2K M is written as an excellent radon barrier; Rayston Spray D50 for foundations.

Names from the official catalogues. No consumption figures on this page — read kg/m² from the current TDS, then the calculator.