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Radon gas occurs naturally. It is present in nearly all soil and rock; you can't see, smell or taste it - but it's there. |
Radon forms when uranium breaks down to radium, which in turn breaks down to form radon. As radon decays, it releases radioactive byproducts that are inhaled. Radon is the second-leading cause of lung cancer after smoking -- and the number one reason why non-smokers die of lung cancer. It's estimated to be responsible for over 21,000 deaths annually in the United States.
Radon enters a home through cracks in walls, basement floors, foundations and other openings. Once inside, radon can become trapped and build up to unsafe levels, especially in areas below ground-level. Nationwide it's estimated that 1 in every 15 homes has elevated radon levels. In the Portland / Vancouver area that number can skyrocket to 1 in 4 homes.