How to Galvanize Aluminum

Galvanized aluminum is more resistant to corrosion than untreated metal.
••• Jupiterimages/Photos.com/Getty Images

Galvanizing aluminum helps protect metal from oxidation and corrosion. It is an essential process for exterior aluminum items that are subject to harsh elements, including acid rain and saltwater spray from the ocean. Hot dip galvanizing is a commercial process that will often protect aluminum for more than 20 years; however, spray products are also available for home use. Cold galvanizing aluminum surfaces with zinc fusion provides effective metal protection in extreme temperatures and environments containing high concentrations of corrosive elements at a fraction of the cost for hot galvanizing.

    Mix 1 tbsp. of baking soda in 1 cup of vinegar. Remove any stains or oxidation by applying the mixture with a steel wool pad to the aluminum surface.

    Compare prices and features of galvanizing spray products, such as those offered by Clearco and Rust-Oleum, to find the spray that best fits your needs. Purchase the required amount for adequate coverage from a local hardware store or order directly from the manufacturer.

    Apply the galvanizing spray to the aluminum surface in accordance with package directions. Allow to dry at least 12 hours.

    Coat with an epoxy seal, if desired, for additional protection.

    Things You'll Need

    • Vinegar
    • Baking soda
    • Steel wool
    • Cold galvanizing spray
    • Epoxy

    Warnings

    • Do not coat galvanized surfaces with lacquer.