Ultimate Geoseal

Visqueen Ultimate Geoseal is a 1mm thick, robust and chemically co-extruded product, that is hydrocarbon, volatile organic compound (VOC) and a gas resistant waterproofing membrane. It is coloured grey on the upper surface and black on the reverse. The grey surface is textured to aid adhesion to cast concrete.

The barrier is supplied in single wound rolls (not folded), 2.44m x 41m.

Features & benefits
Agrement certified - third party accreditation
Complies with CIRIA C748:2014 - industry standard for volatile organic compounds (VOC) protection
Complies with BS 8485:2015 + A1:2019 - industry standard for methane and carbon dioxide protection
Type A Barrier Membrane (Tanking Membrane) - resistant to ground water in accordance with BS 8102:2022
High resistance to puncture - greatly reduces risk of barrier becoming damaged during the build process
Multi functional - also acts as a radon and damp proof membrane
Dual jointing methods - lap joints can be taped or heat welded