best way to paint over galvanized metal
Here's how to paint galvanized metal: 1  Wash the metal thoroughly with hot soapy water. 2  Rinse the metal and let it dry completely for several hours. 3  Rinse the metal with a weak solution of water and ammonia and allow it to dry.4  Remove any handles or other attachments from the metal.ere's what you'll need to paint galvanized metal so that the paint won't peel off: 1  Ammonia. 2  Heavy duty sandpaper, 240 girt. 3  Metal primer. 4  Metal paint, preferably the same brand as the primer. 5  Tack cloths [source: Do It Yourself ].