Trying to build on ground that is contaminated with gas can be a real issue. All across the UK there has been legislature passed that places strict regulations on building on such ground. Rightly so, there is a real risk associated with gasses seeping into the structure that is being built.
The two most dangerous of these gasses are co2 and radon. These gasses are both odourless and colourless but bring with them potentially deadly consequences. Luckily there are products available that act as efficient co2 gas barriers, further, these products serve to block radon, methane, and many other dangerous gasses.
The conventional method of protecting against the gas is the use of a thick base concrete slab on top of an impermeable membrane, as well as a passive ventilation system under the concrete.
This Is Where Geomembranes Come Into Play
Geomembranes come in many differing materials as well as many different manufacturing methods. Each of these variations gives the membrane a specific purpose on the construction site.