What is the most common radon mitigation technique used?

Active soil depressurization is widely recognized as the most effective and commonly used radon mitigation technique. This method involves installing a system that includes a fan and a series of pipes, designed to draw radon gas from beneath the foundation and vent it safely to the outside atmosphere. By creating a lower pressure zone under the building, it prevents radon from infiltrating the home, effectively reducing indoor radon levels.

The efficiency of active soil depressurization stems from its ability to continuously operate and maintain low levels of radon over time, making it a reliable solution in areas with high radon potential. Other techniques such as passive venting, sealing cracks, and air filtration may play supportive roles in radon management or be used in conjunction with more robust systems, but they do not match the effectiveness of active soil depressurization in significantly lowering radon concentrations indoors.