Painting Galvanized Metal Garage Doors

Before priming the steel door test the surface for adequate intercoat adhesion see page 74.

Painting galvanized metal garage doors.

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. Use a powder cleanser like comet diluted with water with a soft bristle brush to prepare the surface for better paint adhesion. Go over the entire door until all the white rust is removed. Use a dull putty knife to remove all loose residue and rust.

If your galvanised metal garage door is brand new you will not have to do this since the rust hasn t formed yet. Make sure to allow each coat of paint to dry before you apply the next. Metal garage doors can be painted by brush or by roller but if using a roller try and use one with natural fibers rather than man made. Both the oil and the rust need to be removed before you can paint your galvanised metal garage doors.

Use a high quality acrylic latex exterior paint. Re apply several coats of paint until the metal is completely coloured with no metal shining through. Do not use sandpaper deglossers or liquid sandpaper to prepare the door surface. Scrub the surface of the garage door with a wire brush.

Rinse thoroughly with water and allow it to dry. Then use a primer specifically how to repaint a steel garage door 1 2 3 72 door access systems spring 2017 continued on. 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.