On Sep 30, 8:30*am, bob haller wrote:
Yes, but, there are cracks along where
the wall attaches to the floor.
There might also be cracks in the floor
itself. So rather than the
radon coming up into the basement,
basement (and house) air goes
into the crack.-

Sealing all cracks is also part of the standard radon mitigation.
beyond which the fan, designed to run in a moist environment just
pulls a minor suction on underslab, having felt the exhaust its just a
small amount.

Many lung cancer cases of non smokers ot exposed to smoke are traced
back to high radon levels in homes.

in the case of homesale time seller has no choice but to spend the
money to get home sold.

Or the Seller could give the Buyer a credit at closing instead of
performing repairs.

This benefits both parties buy not having the Seller subject to
reinspection or "this wasn't fixed well enough". The Buyer also can
perform the repairs themself or hire a contractor they are comfortable
with.

There is always the chance that the repair could cost more or less
than the agreed amount but sometimes you get the bear, sometimes the
bear gets you.