Gas is generated in the underground and for the most part it percolates to the surface and dissipates under normal atmospheric conditions. Under these circumstances the gas does not constitute a health hazard. However, when buildings are constructed on gas contaminated land, it will seep into buildings through openings, construction joints, cavities and service penetrations to reach a dangerous concentration with a serious health hazard to the inhabitants of the house as a consequence.
The gas membranes from Monarflex are developed specially for contaminated ground caused by chemicals or high concentrations of methane gasses. The products are all reinforced for higher strength and have a thick aluminium foil as a dependent gas barrier. The membranes are resistant to most chemicals. Produced from LDPE, installation in low temperatures is possible without cracking. Monarflex a/s has developed 3 special reinforced membranes that meet the high requirements for radon protection and at the same time have enhanced strength properties to ensure a problem-free installation.