Radon vent in slab on grade
I’m considering a radon perimeter drain in a slab on grade in Coastal Maine (zone 6A) with the vertical pipe to ride in an exterior double stud wall (1 ft thick) for a small library addition. I wonder if it is possible instead to seal out potential radon with our super-insulated sealed envelope and eliminate the radon drain and vent? It seems to me that the pipe traveling from under the slab into our envelope would cause more problems.
It is not drawn in the attached detail, but if it were, the 4″drain would appear under the slab insulation just inside the heel and travel horizontally through the heel and the 2″ riser pipe would come up through the exterior wall cavity.
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