Radon is a radioactive gas that occurs naturally in the environment by seeping out of rocks and soil. Radon comes from the depletion of uranium that has been in the ground since earths formation.
Radon flows from from the soil into outdoor air and into the air in homes and commercial buildings from the movement of gases in the soil beneath the structure.
How Does Radon Enter Homes?
According to the World Health Organization, Radon primarily enters homes through the following areas:
- cracks in the floors
- at floor-wall junctions
- gaps around pipes or cables
- small pores in hollow-block walls
- sumps or drains
Radon levels are usually higher in basements, cellars or living spaces in contact with soil, this is also why it is the preferred area to test radon levels within a home.