Description:

GGM 400 Gas Membrane is a high performance, reinforced polyethylene membrane incorporating a gas resistant aluminium foil. The multi-layered laminate structure gives good strength, flexibility and installation properties. The upper surface of the membrane is coloured green. When used with other components in the GGM 400 Gas Membrane System, a high performance gas protection system can be installed to prevent harmful gases and vapours from entering buildings.

GGM 400 Gas Membrane also functions as a damp proof membrane and may be linked with other membrane systems to form a fully engineered, continuous, water and gas resistant solution for deeper structures.

Uses:

• Sites with medium to high level gas concentrations
• Sites with low to medium level hydrocarbon vapour contamination
• Ground bearing concrete slabs
• Suspended concrete slabs

Advantages:

• Fully comatible with GCP Preprufe and Bituthene membrane systems to form an integrated waterproof and gas resistant protection system
• Prevents the transmission of methane, radon and carbon dioxide gases
• Resistant to hydrocarbon vapours
• Fully bonded lap system
• Robust – resistant to on-site damage
• Good puncture resistance
• High tear and tensile strength
• Flexible – can accommodate normal building movements
• Weldable