My DevonStone cast stone pavers have a white haze on them. What is it?
It”s probably efflorescence. This occurs when the natural salts in the raw materials (including sand, cement, and stone) are drawn to the surface by moisture. Efflorescence is common to all concrete products, is completely natural and will disappear with time. There are cleaners available that are specifically formulated for cleaning concrete. Most of these contain acid and detergents, and we do not recommend that they be used on DevonStone. Clean DevonStone with warm water and a stiff nylon broom or brush. If a cleaning agent is required, try Simple Green. It is available at grocery and hardware stores.
