Such as the gaping hole in our roof, which is hopefully venting any errant Radon...
Being significantly heavier than air, radon will vent downwards.
Not trolling, genuine question: if it's heavier than air why is there a risk of it seeping into people's houses? Wouldn't it just stay in the ground?
@Brun started
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Such as the gaping hole in our roof, which is hopefully venting any errant Radon...