Protech GM HM Membrane is a modified HDPE, loose - laid, gas barrier that provides maximum protection from the ingress of Hydrocarbon liquids and vapours, VOC Contaminants, Methane, Carbon Dioxide and Radon into new deveopments. The membrane is fully compliant with the recommendations made in Ciria 665, BS8485 and ’The Local Authority Ground Gas Handbook’ when installed in accordance with BRE 414.
Relatively flexible and easy to lay
Full range of accessories to ensure that the membrane is gas tight
Improved Impact Resistance and does not usually require protection layer when used under reinforced slabs
Large rolls available for reduced installation times
Compatible with the Provoid Gas Venting System
Smaller rolls available for reduced wastage on smaller schemes