What is the primary way radon enters homes?

Radon primarily enters homes through cracks in floors and walls. This occurs because radon is a naturally occurring radioactive gas that is produced from the decay of uranium in soil and rock. As it is released from the ground, it can seep into buildings through any openings or imperfections in the foundation, such as gaps or cracks. These entry points allow radon to accumulate in enclosed spaces, making it crucial for homeowners to be aware of and mitigate radon levels effectively to ensure safety.

While radon can also be found in drinking water, especially from private wells, this pathway typically accounts for a smaller percentage of radon exposure compared to the infiltration through soil into homes. Building materials and exterior ventilation can contribute to radon levels, but they are not the primary source as compared to the direct entry through structural cracks. Understanding these pathways helps inform risk assessment and mitigation strategies in radon management.