Visqueen Ultimate Gas Barrier NF-500 Green Tint – 2.4m x 43.5m x 500 micron

Visqueen Ultimate Gas Barrier NF-500 is a co-extruded, multi-layer thermoplastic volatile organic compound barrier and gas barrier, 0.5mm thick (500 micron). The membrane is transparent with a green tint and supplied 2.4m x 43.5m in a single wound roll.

Usage:

Visqueen Ultimate Gas Barrier NF-500 is suitable for use in all types of buildings to prevent the ingress of harmful levels of volatile organic compounds (VOCs), methane, carbon dioxide and radon.

The barrier can be positioned above or below reinforced cast in situ concrete floor slabs e.g. ground bearing, suspended or raft, or above precast suspended segmental subfloors, e.g. beam and block floor.

The barrier can also be used as a high performance radon membrane and/or damp proof membrane. Where protection against VOCs or hydrocarbon contamination is required, the barrier system should be applied with welded joints.

Radon, carbon dioxide, methane and VOC protection – NHBC NF94 guidance: Visqueen Ultimate Gas Barrier NF-500 when installed with either welded or taped joints (welded when used for VOC protection) complies with NHBC Foundation NF94 publication, Hazardous ground gas – an essential guide for housebuilders, in Type A membrane locations in precast suspended segmental subfloors and reinforced cast in situ concrete floor slabs (ground bearing, suspended or raft).

In addition, Visqueen Ultimate Gas Barrier NF-500 when installed with welded joints complies with NHBC Foundation NF94 publication, Hazardous ground gas – an essential guide for housebuilders, in Type B membrane locations in reinforced cast in situ concrete floor slabs (ground bearing, suspended or raft).

For site or zone characteristic gas situations of CS4 and above, contact Visqueen Technical Services.

The barrier is not intended for use where there is a risk of hydrostatic pressure.

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

Approvals & Standards:

• Third party accreditation (BDA Agrement Certificate BAB-24-339-P-A-UK)
• Complies with the methane gas transmission rate, mass per unit area and thickness requirements of BS 8485:2015 + A1:2019
• Suitable for all Characteristic Gas Situation (CS) ground gas regimes
• Complies with NHBC Foundation NF94 guidance for use in Type A and Type B membrane locations (non foil system)
• Conforms to the specification requirements of NHBC Amber 1 and Amber 2 applications
• Conforms to the specification requirements of BR 211:2023
• UKCA UKNI CE to EN 13967:2012
• Visqueen certified with Quality Management System ISO 9001:2015
• Visqueen certified with Occupational Health and Safety System ISO 45001:2018
• Visqueen certified with Environmental Management System ISO 14001:2015

System Components:

• VisqueenPro Double Sided Jointing Tape, 50mm x 10m
• VisqueenPro Detailing Strip, 300mm x 10m, 500mm x 10m
• Visqueen TreadGUARD 1500, 1m x 2m
• Visqueen TreadGUARD 300, 2m x 75m
• Visqueen NF-Detailing Strip, 300mm x 10, 500mm x 10m
• Visqueen NF-150 Lap Tape, 150mm x 10m