Visqueen Gas Barrier NF-400

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, allowing a clear view of the substrate during and after installation. Supplied in single wound rolls measuring 2.4m x 43.5m. Provides a multi-functional ground gas and moisture protection in a single product.

Benefits

• Methane and CO2 protection to BS 8485:2015+A1:2019
• NHBC Foundation NF94 compliant — Type A membrane location
• Also acts as radon and damp proof membrane
• BBA Agrement certified

Good to know

• Transparent with blue tint for substrate visibility
• Lap joints can be taped or heat welded
• Visqueen Gas Barrier NF-400 should be installed on a smooth continuous surface e.g. grouted beam and block floor, a compacted blinding layer e.g. 50mm thick sand blinding, or smooth concrete blinding. The substrate should
  be free from irregularities such as loose aggregates or other sharp protrusions, voids, projections or mortar deposits.
• Store in a cool dry place away from direct sunlight