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Why Sub-Slab Depressurization Is the Gold Standard in Radon Mitigation
Understanding the Problem Beneath Your Home When I first started testing homes for radon in St. Charles County, I saw a pattern that surprised me. Even well-built houses on slab foundations were showing elevated radon levels. The common assumption was that radon only affected homes with basements or crawl spaces. That assumption is wrong. Radon is a soil gas that can enter any structure through cracks, gaps, or porous concrete. And in homes built on a concrete slab, the pa
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