Painting Galvanized Metal Garage Doors

Use a dull putty knife to remove all loose residue and rust.

Painting galvanized metal garage doors.

Make sure to allow each coat of paint to dry before you apply the next. Do not use sandpaper deglossers or liquid sandpaper to prepare the door surface. Go over the entire door until all the white rust is removed. Then use a primer specifically how to repaint a steel garage door 1 2 3 72 door access systems spring 2017 continued on.

Acrylic latex exterior house paint is the best choice but be sure to choose a high quality paint. Scrub the surface of the garage door with a wire brush. Rinse thoroughly with water and allow it to dry. If your galvanised metal garage door is brand new you will not have to do this since the rust hasn t formed yet.

You may also need to clean the door with a degreaser if the metal is oily as discussed in our article on how to paint galvanized metal. Next prime any bare spots with a latex primer designed for use on galvanized metal then topcoat the door with a high quality exterior acrylic latex paint. Use a high quality acrylic latex exterior paint. Before priming the steel door test the surface for adequate intercoat adhesion see page 74.

If you have exposed metal do not destroy the galvanized surface. Re apply several coats of paint until the metal is completely coloured with no metal shining through. In most cases a single coat of paint is all it takes but keep in mind it could take more than one coat to provide good coverage if you re painting the garage doors a color that s lighter than the original color.