What radon level is dangerous?
The EPA recommends taking action at 4.0 pCi/L or higher, and says to consider fixing between 2.0 and 4.0. There's no completely safe level — the higher the number and the longer the exposure, the greater the lung-cancer risk. A result at or above 4.0? Call (605) 600-7781.
How much does a radon mitigation system cost?
It depends on your foundation type, how the system can be routed, and how many suction points are needed. A straightforward sub-slab system on a basement is at the lower end; crawlspaces, multiple foundation types, or tricky routing cost more. We give you a real number before any work starts.
How does a radon mitigation system work?
The most common, effective method is active sub-slab depressurization: we seal the slab, run a vent pipe from beneath the foundation up and out, and an inline fan continuously draws radon from under the slab and vents it above the roofline before it can enter your living space. A post-install test confirms it worked.
How is a home tested for radon?
With a short-term test (2–7 days, used for real-estate deals), a long-term test (90+ days, the best year-round picture), or a continuous radon monitor. The test sits in the lowest lived-in level with the house kept closed up. Call (605) 600-7781 and we'll tell you which fits.
Do you serve all of Pennington County?
Yes — Rapid City, Rapid Valley, Summerset, Box Elder, Black Hawk, Piedmont, Hill City, Keystone, and throughout Pennington County.
