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Can radon be reduced by sealing cracks and slab openings?

April 26, 2017CRACKS Openings radon reduced sealing slab

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Can radon be reduced by sealing cracks and slab openings?

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Reducing the radon levels in a home by sealing cracks or a sump pit has not proven to be very effective. This is partially due to the radon levels in the soil building up to a higher concentration when the openings are sealed so that less soil air comes in but it comes in at a higher radon concentration. Sealing is still a necessary component of sub-slab depressurization radon mitigation systems.