There are two possibilities that can cause your garage floor to be damp: 1  When warm, humid air comes in contact with a cold concrete slab, water vapor in the air can condense on the surface of the concrete in the same way that a glass with ice sweats in summer.
flaw, fault, defect - an imperfection in an object or machine; a flaw caused the crystal to shatter; if there are any defects you should send it back to the manufacturer. wart - an imperfection in someone or something that is suggestive of a wart (especially in smallness or unattractiveness)
An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the sellerâs listing for full details and description of any imperfections.