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Mold on concrete can take several forms. Concrete is really a porous substance, and your basement floor gets a great deal of moisture in the ground underneath it. Usually, concrete foundations use a dampness barrier. But, in some circumstances the wetness barrier is old or damaged, or it might not happen to be appropriately installed. In arid places like Southern California, Arizona and higher altitudes, you might not have a very moisture barrier built into your home. You typically don't require it, but should you have a heavy rain or perhaps a spell of humid weather, you're most likely to obtain that nasty mold growing on your concrete floors.
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