Radon Crawl Space Lantern

Why a Crawl Space Can Be a Radon Pathway When people think about radon, they often picture a finished basement with a sump pump or a concrete floor. But in many homes across Jefferson County - especially older houses in Arnold, Festus, High Ridge, and Hillsboro - the crawl space is the true point of entry. A crawl space is that shallow, unfinished area under the first floor, usually with a dirt floor or a thin layer of gravel. Because it sits directly on the soil, it acts l