Visqueen Gas Barrier NF-400 is a co-extruded, multi-layer thermoplastic gas membrane, 0.4mm thick (400 micron). The membrane is transparent with a blue tint and supplied 2.4m x 43.5m in a single wound roll.

Features & Benefits

• BDA Agrement Certification - third party accreditation
• Complies with NHBC Foundation NF94 guidance for use in Type A membrane locations - non foil system
• 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
• Transparent - allows a clear view of the substrate during and post installation
• Multi functional - also acts as a radon and damp proof membrane
• Dual jointing methods - depending upon specification, lap joints can be heat welded or taped