How to Paint a Galvanized Trailer

Remove all rust from the metal using a wire brush. Remove flaking or peeling areas with a scraper.

Wash the metal trailer with TSP (trisodium phosphate cleaner) degreasing cleaner to remove all grease and grime. Rinse the trailer with clear water using a hose. Allow the trailer to dry completely.

Apply a coat of galvanized metal primer to the trailer. Allow the prime to dry for the amount of time recommended by the manufacturer. When the primer is dry, apply a second coat.

Apply a coat of metal paint to the trailer. Allow the paint to dry for the amount of time recommended by the manufacturer. When the paint is dry, apply a second coat.