Radon is a naturally occurring odorless, colorless, radioactive gas formed by the ongoing decay of uranium in soil, rocks, sediments, and even well or ground water. While radon that escapes into the atmosphere isn’t harmful, dangerously high concentrations can build up indoors, exposing occupants to possible health risks.
How does radon get into your home? Openings or cracks in basement walls, foundations or floors are common avenues. Sumps, basement drains, and spaces between gas or water fittings can also allow radon into the structure. Other possible entry points include gaps in suspended floors and cavities within walls.
Home buyers are advised to add radon testing to the home inspection process.