Visqueen Gas Vent Mat – 900mm x 50m x 25mm

Visqueen Gas Vent Mat is a geocomposite void former comprising a cuspated high density polyethylene (HDPE) core bonded to a non-woven polypropylene geotextile filter membrane. Visqueen Gas Vent Mat is 25mm thick and supplied in rolls 900mm x 50m.

Visqueen Gas Vent Mat is designed to create a 25mm deep void beneath reinforced concrete ground floor slabs. Hazardous ground gases or volatile organic compounds (VOCs) are collected within the void and dispersed to atmosphere via a designed arrangement of Visqueen connectors and venting components, collectively managing and effectively diluting the collected gases.

Where high gas concentrations have been recorded the vent mat can be laid in a blanket format with the individual mats being butted together. Where the gas concentrations are low or where pressure relief is required the vent mat can be laid in a strip format with the mat being laid at predetermined spacings.

Features and benefits

• Large format rolls – rapid installation
• Less contaminated soil to be removed compared to pipe and gravel systems
• System achieves between 0.5 and 1.5 points in accordance with BS8485:2015 + A1:2019
• Range of system components – provides various methods of exhausting gases to atmosphere

Approvals and standards

• 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