Galvanized metal is pre-coated with an oil that is designed to prevent rust from forming. Paint will not adhere to the oily residue. Use a wire brush to remove rust and clean the trailer well with a degreasing cleaner such as TSP. Prime the trailer with a metal primer to be followed with metal paint.Click to see full answer. Also asked, can I paint over my galvanized trailer?If you leave the galvanizing on you can go over it with a good self etching primer and then paint.Beside above, how do you restore a galvanized boat trailer? How to Clean a Galvanized Trailer Pour galvanized metal cleaner into a bucket and add water from a garden hose according the to package directions for mixing the product. Spray the trailer from top to bottom with a garden hose to wet all surfaces. Dip a soft bristled brush into the cleaning solution and brush it onto the metal. how do you paint a boat trailer? Re-paint a Boat Trailer Remove dirt and other contaminants by pressure washing or wire brushing. Clean with mildew retardant solution if necessary. Let dry thoroughly. Use a medium grit Scotch Brite pad or very fine sandpaper to remove oxidation. Wash surface to remove and sanding residue. Can you paint galvanized wheels?Galvanized metal is difficult to paint because it’s coated with a layer of oil to prevent white rust. Alkyd and oil-based paints may seem to stick at first, but the oily layer eventually “sheds” the paint. Metal paint, preferably the same brand as the primer. Look for a brand specially designed for galvanized metal.

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