The Powerbase MultiGas 500 Gas Barrier Membrane is a high-quality, reliable solution for preventing the ingress of harmful gases into buildings. With dimensions of 2m x 50m, this 100m2 gas barrier membrane is designed to provide a durable, resistant barrier against gases such as radon, carbon dioxide, and methane. Manufactured by Powerbase, a reputable brand in the construction industry, the MultiGas 500 is easy to install and offers excellent protection in hazardous ground conditions. Its perfect for use in construction projects where gas permeability needs to be controlled.