How is Radon Mitigated?
Sub-slab depressurization
Sub-slab depressurization is the most common approach. A suction pipe (pvc pipe) is implanted through the floor slab into the soil beneath. Depending on the type of soil, we assess the type of fan you will need to create a proper vacuum effect. The fan is then installed on the piping, outside of the living quarters, to push the Radon gases up and above the roofline, where it is harmlessly dissipated into the air.
Active drain tile depressurization
Active drain tile depressurization may be necessary if a drain tiling system around the foundation is present. Here, radon gases collect in the drain tile itself or in the sump basin, or both. In that event, the sump is covered, creating an airtight seal. Next, a hole is cut and a pipe is installed into the sump basin to allow for the actual mitigation of the gases. Then, as with sub-slab depressurization, a fan is installed on the piping and vented above the roofline.