The U.S. Environmental Protection Agency (EPA) suggests doing something about it to minimize radon in houses that have a radon level at or above 4 picocuries per liter (pCi/L) of air. About 1 in 15 U.S. residences is estimated to have rado…

It is difficult to identify as well as permanently seal the locations where radon is going into. Normal settling of your residence opens up new entrance courses and resumes old ones. More recent building may count on easy mitigation, where…