How is Radon Removed from a Building/Home ?
Two typical systems are used here in Colorado, which are same as used all over the world. Basically a vacuum type of system is installed to draw the bad air/gas out from the soils under the building/home. This is accomplished by covering soils in a crawl space with a special barrier and pipe under barrier to exterior with a fan. This would be called sub-membrane depressurization type. Another is sub-slab depressurization, where an opening through the concrete floor is made with a void under the concrete and a pipe inserted/sealed then routed to the exterior with a fan drawing bad air/gas out.
