Sealing Basement Floor Cracks Radon
Sealing is not consider to be a good stand alone technique for radon abatement.
Sealing basement floor cracks radon. Radonseal concrete sealer the 1 concrete sealer for waterproofing damp proofing radon mitigation and strengthening concrete. Sealing all cracks and applying non porous thick epoxy coatings over 10 mils dry film thickness would be a better step. I do not have a sump pump. Ok so my 1st test was 6 2 being 72 hrs long.
Seal your concrete before painting it or installing flooring to avoid trapping moisture. As a general rule of thumb we caulk accessible areas where the floor and wall meet and cracks big enough to slide a credit card into. Sealing all cracks and applying non porous thick epoxy coatings would be a better step. Caulk has a limited life span especially in basements where constant moisture changes can be expected in cement foundations and floors.
New cracks can occur as the basement ages. Treated surfaces remain suitable for paints adhesives and overlays. Diy crack repair kits repair and block water leaks through cracks in foundation walls and basement floors. Do it yourself basement waterproofing methods and solutions.
Keep in mind though that the acrylic and other soak in sealers marketed as radon mitigation systems are untested solutions. Sealing the basement floor can help but just sealing the cracks is unlikely to reduce your radon levels in the long term. I did and also went to the perimeter where slab meets the poured wall and sealed that seam as best as could. It does not change the surface of the concrete.
Ideally if you are trying sealing alone to reduce your radon level we see the best results in unfinished basements. Here are a few reasons for this. The following pictures are examples of common and some uncommon areas we seal. Radonseal concrete sealer permanently seals basement walls concrete blocks and floors against moisture.
My basement is a walkout located in mid indiana. Commonly used for sealing poured concrete basement walls and floors concrete blocks garage slabs and outdoor concrete. I was advised by a mitigator to seal my cracks in floor with silicone. Sealing the basement floor can help reduce the amount of radon entering the home.
But just sealing the cracks would be unlikely to reduce those amounts in the long term.