If a non-permeable hard flooring is installed over a concrete substrate that has issues with moisture in it, the moisture, which has always been there and always moves in and out of the concrete ...
that questions why the flooring industry ever abided by what it calls a “one size fits all” standard for evaluating concrete slab moisture. According to the article, “The literature from ...
leak or moisture coming up from below — which might be an issue if you’re installing laminate flooring directly over a concrete slab. Lower swell ratings make for a better flooring option ...