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Community Environmental Health

IDEM Environmental Health > Radon > How Does Radon Get Into a Building? How Does Radon Get Into a Building?

Radon can get into any type of building. Radon typically moves up through the ground to the air above and into a building through cracks and other holes in the foundation. Buildings trap radon inside, where it can build up. Any building may have a radon problem. This means new and old, well-sealed and drafty, and buildings with or without basements.

Radon Enters A Building Through:
  • Cracks in solid floors
  • Construction joints
  • Cracks in walls
  • Gaps in suspended floors
  • Gaps around service pipes
  • Cavities inside walls
  • The water supply