Galvanized metal is a form of steel that has been thinly coated in zinc oxide. This zinc oxide coating serves as a critical barrier that helps to protect the underlying steel from corrosion, oxidation and other damage from the elements. Galvanized metal is widely used in the building outdoor structures. Several methods can be used to clean various issues that occur on the material.
Wash With Soap and Water
Mix 1/4 cup dish soap in a gallon of hot (not scalding) water.
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Scrub the metal surface with firm, circular strokes using a soft-bristled brush.
Rinse this off thoroughly with hot water and then wipe it dry using a lint-free cloth.
Clean Off Hard Water
Create a solution of equal parts white distilled vinegar and water.
Rub the solution into the metal with a soft cloth or spray with a spray bottle.
Dry with a cloth.
Neutralize Alkaline Deposits
Mix one part baby powder with two parts milk.
Use a toothbrush to apply this solution to the metal surface.
Rinse off and dry thoroughly.