radon retest 4

https://theradoncollinsvillepost.summitviewdaily.com/posts/understanding-radon-collinsville-homeowners-should-know

After your initial radon test, the radon retest is your follow-up to see if levels have changed. It's especially important if you've made mitigation changes or if your home experienced major shifts in weather or occupancy. I did mine after sealing basement cracks, and it confirmed the fix worked. A radon retest ensures you're not just guessing about your family's safety—it gives you a reliable second snapshot of long-term exposure. Typically done under similar closed-house conditions, it's a st…