How to Paint Aluminum Metal

A successful aluminum paint job is the direct result of proper surface preparation, involving cleaning and priming with the right product. The Paints and Coating Resource Center recommends purchasing paint and primer from an industrial paint store rather than your local hardware store. An industrial paint store is likely to have a wider selection and you'll benefit from the specialized knowledge of its employees.

Painting Aluminum Siding

  1. Clean the siding with a phosphate-free soap or general purpose cleaning solution and a scrub brush. Let it dry for two to three days.

  2. Prime the siding with a thinned down, oil-based, metal priming paint. Thin one gallon of oil-based primer with one pint of paint thinner.

  3. Finish with a high-quality, 100-percent acrylic latex exterior house paint. A paint formulated for metal siding is even better. Apply within 48 hours of applying the primer.

Paint a Small Piece of Aluminum

  1. Degrease the piece with phosphate-free soap and water. Let it dry completely.

  2. Apply a wash primer with a spray gun. Mix it exactly to the manufacturer's directions.

  3. Apply and polyurethane paint or acrylic paint to the primed piece.