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I have white chalky stuff on my basement wall, what is it?

April 26, 2017basement chalky stuff wall white

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I have white chalky stuff on my basement wall, what is it?

1 Answer

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It is called efflorescence. Concrete is made of sand, stone and lime cement. When moisture leeching into the wall causes a breakdown of the bond between the cement and the aggregate it forms as efflorescence on the surface of the wall. Easy to clean.