Protect Metal Garage Door From Rust

Let the primer dry.

Protect metal garage door from rust.

A spray primer is often easier to apply in even layers without brush marks. How to prevent rust buildup on your garage door keep the door clean. If paint or rust is flaking off the surface use a wire brush or sandpaper to remove it. The zinc chromate helps prevent further rust from developing.

Roughen the surface of the metal garage door with a hand sander and medium grit sandpaper. Primer can also help prevent future rust on the door. Cleaning the garage door on a regular basis is necessary to prevent dirt and salt from accumulating. Applying in a well ventilated area prime door using the krylon rust protector rust preventative primer gray holding the can 6 8 inches from the surface and using a sweeping side to side motion with slight overlap.

Choose a primer designed specifically for metal and for outdoor use if you re painting an exterior door. Brush the door with soap and water starting at the bottom where the rust is concentrated rinse thoroughly and let dry dip an old cloth in white vinegar do not use cider or spiced. Coat the sanded areas at the bottom of the garage door with a zinc chromate primer using a paintbrush. Sand the entire door not just the oxidized areas to help the primer stick to the door.