GB-600 is a 600 micron thick, multi-layer, polyethylene membrane, reinforced with a polypropylene reinforcing grid and an integral aluminium foil. GB-600 is specifically designed to perform as a barrier to ground gases such as methane, carbon dioxide and radon, plus volatile organic compounds (VOCs). GB-600 fully complies with the latest codes of practice as published by BRE, CIRIA and BSI (BS 8485:2015), and is suitable for use as a gas protection system for NHBC AMBER 1 and AMBER 2 site characterisations.




GB-600 is designed for use as a gas vapour resistant barrier to restrict the ingress of radon, methane and carbon dioxide gases into buildings from landfill and naturallyoccurring sources. GB-600 can be installed on sites where passive or active ventilation measures are required; used in conjunction with GEOVENT ventilation composite and relevant vent connectors as applicable. Where continuous or intermittent hydrostatic conditions exist, GB-600 should be overlaid with an appropriate CETCO waterproofing membrane. Contact CETCO for further information in terms of waterproofing membrane selection.

Technical Data

Agrément Certificate 17/5430



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