Hi all. Newbie here.

I am likely going to be installing an active slab depressurization system for radon in a house I am buying. Will there be any positive moisture control benefits? I am thinking maybe things won't get smelly in the basement in the summer?

The house is located near Albany, NY, is two years old, has a full basement and has fiberglass insulation under the first floor. I will probably insulate the walls and finish the basement at some point after the radon is reliably under control.

Thanks.

quote:

Will there be any positive moisture control benefits?

No.

I am thinking there should be at least some benefit. These systems are known to extract good amounts of moisture, to the extent that condensation can be a problem for the motor in the pump and freeze-up, and is the reason why the ducting has to be sloped back to the ground source. The surfaces will still be cool in the basement (without insulation), so I imagine the component of the mustiness helped along by condensing warm humid air in the summer on these surfaces won't be helped.

A two year old house, by Code, will have a vapor barrier below the concrete slab that will prevent nearly 100% of all moisture coming up into the basement from that source.

The radon mitigation system will add no benefit to already nearly 100% moisture prevention.

If you do have sources of water vapor that enter the basement, it is less likley from below the slab in a 2 year old basement than they are from the walls or other sources.

So the answers remains no.

A radon mitigation system will have no effect on the moisture levels in a basement.

It is not part of their design.