Does foundation type affect radon entry?
No, because radon can literally be sucked into a home, any home can potentially have a radon problem. All conventional house construction types have been found to have radon levels exceeding the action level of 4 pCi/L. Basement Radon can enter through floor-to-wall joints and control joints and cracks in the slab. Slab-On-Grade Radon can enter a home regardless of whether or not there is a basement. Slabs built on grade can have just as many openings to allow radon to enter as do basements. Crawlspace The vacuums that exist within a home are exerted on the crawlspaces causing radon and other gases to enter the home from the earthen area below. Even with crawlspace vents, a slight vacuum is still exerted on the crawlspace. Measurements in homes with crawlspaces have shown elevated radon levels. Manufactured Homes Unless these buildings are set up on piers without any skirting placed around them, interior vacuums can cause radon to enter these types of homes as well. Can we keep radon o
