When should sealing of cracks and openings be prioritized during radon mitigation?

Sealing of cracks and openings should be prioritized before implementing active systems for the best results in radon mitigation. This is crucial because sealing effectively reduces the pathways through which radon can enter a building. If these entry points are not addressed initially, the efficacy of active mitigation systems, such as venting or suction systems, may be significantly diminished.

When cracks and openings are sealed before installing mechanical systems, it enhances the overall effectiveness of the radon mitigation strategy. This approach ensures that the systems can function at their maximum potential by limiting the inflow of radon from beneath the home. Consequently, reducing the radon concentration becomes much more manageable, thereby providing a safer indoor environment.

In contrast, focusing solely on homes with new construction, moderate radon levels, or taking preemptive measures without addressing existing cracks and openings may not yield the same level of effectiveness. These options overlook the importance of sealing as a foundational step in a comprehensive radon mitigation approach. Prioritizing sealing can lead to more robust and effective mitigation outcomes.