Was Your Radon System Installed Properly?


Right:                            Wrong: 

         


"To prevent re-entrainment of radon, the point of discharge from vents of fan-powered soil depressurization and block wall depressurization systems shall meet all of the following requirements: (1) be above the eave of the roof, (2) be ten feet or more above ground level, (3) be ten feet or more from any window, door, or other opening into conditioned spaces of the structure that is less than two feet below the exhaust point, and (4) be ten feet or more from any opening into an adjacent building. The total distance (ten feet) from the point of discharge to openings in the structure may be measured either directly between the two points or  be the sum of measurements made around intervening obstacles. Whenever possible, the exhaust should be positioned above the highest eave of the building and as close to the roof ridge line as possible."

- Radon Mitigation Technology Course

      EPA Radon Mitigation Standards 14.2.8