What Is Efflorescence and How Does It Affect Your Home?
May 6, 2026
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Home If you’ve ever seen a white, chalky substance on your basement walls or concrete floor, you might have wondered what it is. It’s easy to assume it’s mold or some kind of damage. In most cases, it’s something called efflorescence. And while it’s not dangerous on its own, it is a sign that moisture is present. Quick Answer Efflorescence is a white, powdery residue left behind when water moves through concrete or masonry and evaporates. It doesn’t damage your home directly, but it indicates
