Groundworks Installation Practices
It is now recommended that installation teams attain Construction Skills NVQ Level 2 qualifications in gas membrane installation as per CIRIA C735 Good practice on the testing and verification of protection systems for buildings against hazardous ground gases. There has been more emphasis on the installation of gas membranes.
The penetrations are classed as the weakest point of the installation and the following areas should be paid extra care and attention:-
Protech GM HM
Modified HDPE membrane, protects against hydrocarbon liquids and vapours, VOC contaminants, Methane, Carbon Dioxide and Radon.