In order for paint to adhere on galvanized steel gutters and downsprouts, louvers, mailboxes and other area on the home's exterior, the metal must either age (oxidze) for a year or be treated with with a chemical that will etch the surface. Then clean off any grease, oil or handprints with a rag soaked in laquer thinner. Prime the metal with a galvanized metal primer (primer can be tinted the color of the top coat). Apply 2 coats of paint (check with your paint suppier to make sure the top coat is compatible with primer).
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