What is the Best Method for Painting Galvanized Steel?
Before a drop of paint is applied in any form, each steel surface must be properly cleaned. The first step, no matter if the metal is corroded or brand new, is to sand it with a thick-grit sandpaper. Apply pressure until any bumps or irregularities are removed. Next, clean the entire surface with soapy water and rinse, letting the metal completely dry. Finally, purchase a galvanized metal primer and apply it to the entire surface.
Larger jobs, like railings and walkways constructed from galvanized metal, require hand painting. Professionals recommend polyurethane, epoxy or enamel paint in order to best protect against corrosion. Using a brush or roller, apply the paint in even strokes so every aspect of the exposed steel is covered. Painting galvanized steel by hand usually protects the metal from the elements better than spray painting because the coating is thicker and more weather-resistant.