Long description of the image “How Radon Enters Your House”

This image is a picture of a 3-story house and description of how radon many enter your house.

  1. Cracks in concrete slab
  2. Spaces behind brick veneer walls that rest on uncapped hollow-block foundation
  3. Pores and cracks in concrete blocks
  4. Floor-wall joints
  5. Exposed soil, as in a sump
  6. Weeping (drain) tile, if drained to open sump
  7. Mortar joints
  8. Loose fitting pipe penetrations
  9. Open tops of block walls
  10. Building materials such as some rocks
  11. Water (from some wells)

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