High Pressure Mitigation

High pressure mitigation is a lengthier process since the homes that need it don’t typically have sump buckets; and those that do, don’t have drain tile. This means that we need to dig out a bucket shape from below the concrete to create enough space to dig bore holes. This means pulling out up to 80 gallons of dirt from the sub slab.

Since the efficiency of these systems vary with the quality of the dirt, we build the system as needed to ensure its working to reduce levels. This may mean coming back to dig more from the suction point, add a second port in an area that isn’t being mitigated properly, or switch to specific high pressure fans. Most systems begin running most efficiently after the ground dries out, which will happen as the system runs.

Pipe routes are equally important in these systems since the higher pressure and bigger fans can cause minor residual noise. We prefer using the garage to enter the attic to keep these fans further from quiet living areas. In the case we can’t reach the attic, we will use a chase or closet corner that is convenient for the homeowner, or it will be hung on the exterior of the home.

After the mitigation system is complete, a post-mitigation test will be performed. If levels don’t fall below 4.0 pCi/L, we come back to tweak or add to the system to ensure it’s working to reduce radon levels as far as they will go.