Wash the surface with a pressure washer or a cloth, and a solution of water and TSP. TSP is a degreaser used to wash surfaces before applying paint or stain.

If there is chalking (white powder) on the aluminum, wash it with an acid solution, such as pure vinegar, or a solution of 10% muriatic acid in water (always pour acid in water, and not the other way), or even a metal cleaner. Rinse well.

You might also like

See all our articles