How does a radon mitigation system work?

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#shortvideo #shorts #how #howto #house #construction #radon
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So if it's not crushed stone, how much air flow can you realistically get? I'm imagining once you core the slab and excavate a bit of material, you've just got a small pocket of air. Placing a piping system over that cavity, and trying to suck the air, wouldn't the fan just be fighting the lack of airflow? I mean, isn't the slab and whole house sitting tightly against the earth underneath it?

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