brit1

thanks for all the input. brit

yes forgot to say they would vent it outside of roof through attic so would that be ok? the pipe would come up through a closet from the basement up into attic. I just thought that if something happened to the pipe or fan it would back draft into the attic and down into living area We have lived here many years and stupidly never tested for radon so am very distressed over it all. I was concerned whether just piping out of basement would be safer. We had originally tested with a home kit and then when it was high I purchased professional kits and placed one in family room and one in basement and they were there for a week.

I have had two proposals for mitigation after testing and finding radon levels above 4 in both basement and family room. One involves mitigating through the basement wall to remove radon from basement and then waiting to see if that takes care of radon in what was a garage but is now a family room and is built on a slab so is not over basement. Second proposal will include family room area and vent up through a closet and into attic. That worries me with fan going thru attic is if something went wrong wouldn't we have an incredible dose of radon coming up through the house vs venting out through basement? So I would really appreciate some opinions here. The first proposal is by someone in the field who has lots of great reviews and the second one doesn't have so many reviews but is well recommended.Both are licensed etc here in MD. Thanks for input. brit