Visqueen Ultimate Geoseal is a 1mm thick, robust pre-applied waterproofing barrier. 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 20.5m.

Features & Benefits

• Agrement certified - third party accreditation
• Complies with NHBC Foundation’s NF94 guidance for use in Type B and Type C membrane locations
• Complies with CIRIA C748:2014 - industry standard for volatile organic compounds (VOC) protection
• Complies with the methane gas transmission rate, mass per unit area and thickness requirements of 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 impact compared to standard Visqueen DPMs - greatly reduces risk of barrier becoming damaged during the build process
• Also provides radon and damp proof membrane protection
• Dual jointing methods - depending upon specification, lap joints can be taped or heat welded