Is a vapor barrier necessary under a concrete slab with foam insulation and if so, where does go?
...Radon barrier radon evacuation stack is mandatory.
To continue about radon – exposure to radon gas in homes is the second greatest cause of lung cancer. There is no way to test radon levels in a home before it is built and no way to install a barrier after a slab is poured, so I’d certainly install a radon barrier it i...