Gas Barrier Membranes

Gas Barrier Membranes

When buildings are constructed on gas contaminated land, gas can seep into buildings through openings, cavities, construction joints, and service penetrations to reach dangerous levels of concentration. This becoming a major concern with the increasing development of Brownfield sites.

The common occurring gases for which protection is required and is achieved by using gas barrier membranes, a gas barrier or a radon barrier are:

1) Methane
2) Carbon Dioxide
3) Radon

Radon: is a radioactive gas, highly hazardous to humans because it is tasteless and odourless and been associated with increased levels of cancer. So it is vital to have an effective radon barrier.

There are three main sources of gas contamination: Brownfield sites, Landfill and Natural occurrence.

On any contaminated land where development is about to start a high performance gas resistant membrane must be installed across the whole area of where construction of the building will take place.

What Material Do We Use For Gas Barrier Membranes?

EvansEnviron use HPDE plastic as the material for a gas resistant membrane, we can work from 0.75mm, 0.5mm, 1mm and 2mm these durable membrane systems prevent the passage of gases through the foundation zone and into the building.

It is also necessary to install a venting system in the gas membranes, which will provide a path for the gas to disperse into the atmosphere if the gas rate is high. Installing gas membranes, a gas barrier or a radon barrier is essential from a health and safety point of view to remove the risk from hazardous gases and is now required by law.

Installing Gas Barrier Membranes is a very specialist skill which all our staff here at EvansEnviron are qualified to do. We have over a decade’s worth of experience in this sector and can travel to any part of the country to undertake this installation.

Please contact us if you require any additional information or quotes for installing a gas barrier membrane & our team will be happy to help!