What is radon?
Radon is a gas that is formed by the breakdown of uranium in the soil. Uranium is a natural radioactive material found in rock and soil. Although radon is found in outdoor air, it can enter a home through the basement walls or floor. Radon can enter through cracks and other holes in the foundation. Your home can trap radon inside, where the concentrations then build up. Any home may have a radon problem including new and old homes, well-sealed and drafty homes and homes with or without basements. Concrete-block walls are particularly porous to radon.