Tag: Sub-Membrane Depressurization

Minneapolis – 06/26/2015

Location: Minneapolis, MN Cost: $2675 Initial Radon Level: 10.0 pCi/L Post Mitigation Radon Level: 0.7 pCi/L This was a big job: sealing a crawlspace running a radon pipe over a finished room installing a suction point in the basement floor mounting a fan and vent pipe on the exterior of the home The crawlspace was fairly large and just deep enough to make the… Read more →

Minnetonka – 05/28/2015

Location: Minnetonka, MN Cost: $1600 Initial Radon Level: 7.6 pCi/L Post Mitigation Radon Level: 0.6 pCi/L This home gave us some challenges, in that the crawlspace was very large and almost the same depth as the basement.  This is a challenge because as the soil level gets closer to the first floor the pressure to bring radon into the home is reduced.  We installed… Read more →

Minnetonka – 04/17/2015

Location: Minnetonka, MN Cost: $1475 Initial Radon Level: 4.3 pCi/L Post Mitigation Radon Level: 0.7 pCi/L This home brought the challenge of having a full basement and a crawlspace.  The crawlspace was tall enough that it was not hard to work.  A new sump basket lid was installed, sealed and a view port was added.  The view port allows for access to the basket… Read more →

Minnetonka – 1/13/2015

Location: Minnetonka, MN Cost: $1550 Initial Radon Level: 10.0 pCi/L Post Mitigation Radon Level: 2.2 pCi/L This project brought two challenges that were at odds with each other.  First, there was a dirt crawlspace that needed to be sealed.  This can be accomplished easily but sealed crawlspaces usually require a high volume of air to be removed from under the… Read more →