Before & After Photos

After recently moving into their Boise home, the homeowners wanted to address a radon issue identified during the inspection period. Testing showed an average basement radon level of 8.5 pCi/L. After reviewing the installation process and answering their questions, Idaho Radon designed an active sub-slab depressurization system with the suction point positioned near a center basement wall to maximize pressure field extension. The fan was installed on the exterior with the system vented above the roofline.

This 1940 home presented some interesting challenges, including limited fresh-air ventilation, a basement floor that appeared to have been placed in two separate concrete pours, and uncertainty about the material beneath the slab. Despite these conditions, the completed system produced excellent results, reducing the average radon level from 8.5 pCi/L to just 0.9 pCi/L.

Basement Mitigation in Boise, ID

Radon Mitigation in Caldwell, ID

Sub slab depressurization of a 2 story residence with a slab on grade foundation.

The client’s home includes a crawlspace. Although radon levels tested below 4.0 pCi/L, with an average of 3.8 pCi/L, the client expressed concern and a desire to further reduce the levels. Idaho Radon installed a crawlspace encapsulation system, with the mitigation fan located in the mechanical closet within the garage. Upon completion of the installation, post-mitigation testing confirmed radon levels were reduced to well below 1.0 pCi/L.