What is an example of a permanent radon mitigation strategy?

Sealing cracks in the foundation represents a permanent radon mitigation strategy because it involves making structural improvements to the home that prevent radon gas from entering. This method is part of a comprehensive approach to radon mitigation, focusing on reducing or eliminating the pathways through which radon can infiltrate indoor spaces. By sealing these cracks and other entry points, homeowners can significantly reduce the level of radon that accumulates indoors.

In contrast, opening windows for ventilation is a temporary solution, as it relies on natural airflow and can be affected by weather conditions. While it may help to lower radon levels in the short term, it does not provide a long-term fix. Using air purifiers is also not a permanent solution, as they do not specifically address the source of radon and are generally less effective at reducing radon levels compared to structural solutions. Finally, installing a charcoal canister is a method for short-term testing of radon levels, not a mitigation strategy, as it does not prevent radon from entering the home. Therefore, sealing cracks in the foundation is recognized as a permanent and proactive approach to radon mitigation.