Block Wall Suction

Sealing the Edges of the Vapor Barrier

We just finished yesterday with a combo vapor-barrier with block-wall suction. There was a large, exposed dirt area in the basement, and radon levels around 8 to 10+ pCi/L. A lot of these houses built around the early 1900's have dirt floor basements. I guess that was normal for that time period. We must have used 60 feet of pipe, as we had to vent a concrete barrier wall on the far end of the basement, and place another pipe under the white vapor-barrier on the end closest to the exit point through the exterior wall:

"Block Wall Suction"


Vapor-Barrier Penetration


Vacuum Indicator


Finding a Way to the Outside


Success!