radon sealing sump pit 3

https://weekly-wiki.win/index.php/Why_You_Need_a_Certified_Radon_Specialist_for_Your_Home

After test results showed high radon levels, I had to deal with the sump pit in my basement. Sealing it meant covering the exposed soil and applying a thick layer of polyurethane caulk around the lid's edge to stop the radioactive gas from seeping through every tiny crack. The kit came with a rubber gasket and a heavy-duty sealant that felt more like industrial glue. It's messy work, but pressing that goo into every gap finally dropped my radon readings to a safe, breathable level.