How do I paint aluminum trim?
PreparationLightly sand the aluminum trim with 220-grit sandpaper to remove rust or loose, flaking paint. Wipe the residue off with a clean rag. Wash new, unpainted trim with hot soapy water, and rinse with a damp rag. Allow the metal to dry before you apply a coat of primer.PrimerApply a metal bonding primer to the aluminum trim with a paint brush and a 4-inch foam roller. The foam roller will eliminate brush marks. Allow the primer to dry according to the manufacturer’s recommendations. Painting too soon will prevent the primer from properly bonding to the metal.PaintCover the trim with a high-quality exterior latex paint, and allow it to dry thoroughly.
