Can Radon Come Back After Mitigation?
Homeowners ask me this one right after their post-installation test comes back clean, usually with a mix of relief and lingering worry. Fair question. You just spent money fixing a problem, and nobody wants to wonder if it's quietly creeping back a year down the road. This comes up often enough after radon testing St. Louis follow-ups that I figured it deserved a proper answer. The honest...
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