Visqueen Ultimate HC Blok is a 0.5mm thick, chemically resistant co-extruded volatile organic compound barrier and gas barrier. It is coloured gold on the upper surface and white on the reverse. The product is supplied in single wound rolls (not folded), 2.44m x 41m.

Features & Benefits

• Agrement certified - third party accreditation
• Complies with NHBC Foundation’s NF94 guidance for use in Type A and Type B 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
• Also provides radon and damp proof membrane protection
• Dual jointing methods - depending upon specification, lap joints can be taped or heat welded