Powdery White Stuff on Retaining Walls: The Efflorescence Mystery
Did you know that the white, powdery tint on brick and stone has a name? Yep. It’s Efflorescence. This substance is a deposit of salts which form if water is present. Some people like the look on clay pots for a vintage appearance but on retaining walls and other building surfaces it looks like structures are grimy and not well kept.
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