Go over the entire door until all the white rust is removed.
Painting galvanised steel garage door.
If your galvanised metal garage door is brand new you will not have to do this since the rust hasn t formed yet.
Use a dull putty knife to remove all loose residue and rust.
If you have exposed metal do not destroy the galvanized surface.
Scrub the surface of the garage door with a wire brush.
Preparation is key to painting a domestic or industrial metal garage door.
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.
The secret to painting galvanized steel is white vinegar.
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.
To prep metal for paint adhesion you must first.
Garage doors are typically made from galvanized metal which conventional paints have trouble sticking to.
Acrylic latex exterior house paint is the best choice but be sure to choose a high quality paint.
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.
All you have to do is simply apply the vinegar to a clean rag and then wipe down the galvanized surface.
Re apply several coats of paint until the metal is completely coloured with no metal shining through.
If you have a kitchen then you probably already have this handy solution.
Portions of this information supplied by akzo coatings incorporated columbus oh 614 294 3361 helpful tips proper painting practices for steel garage doors have you ever been asked when it s time to repaint my garage door what type of paint.
Make sure to allow each coat of paint to dry before you apply the next.
Both the oil and the rust need to be removed before you can paint your galvanised metal garage doors.
Paint a metal door metal doors offer great benefits in security and weather resistance but to keep their surfaces welcoming and rust free you have to keep up with the painting.
Before priming the steel door test the surface for adequate intercoat adhesion see page 74.
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.
Due to its slick smooth surface metal can be challenging to paint and that can you ve got sitting around in the garage probably won t cut it.