Don t use a pressure washer.
How to clean white metal garage doors.
When washing the garage door use one cup of nontoxic biodegradable cleaner mixed with two gallons of warm water.
With a soft sponge or cloth apply the soap to the door in a circular motion.
White tire cleaner was suggested for cleaning the white rubber strips around the doors.
Wear safety glasses and rubber gloves when working with cleaning products.
One cup of simple green or other non toxic biodegradable cleaner less than 0 5 phosphate into two gallons of warm water or household liquid dishwashing detergent such as dawn.
Lots of other suggested cleaners included bleach.
Using a clean bucket mix a small amount of dish soap or car wash soap preferred with water.
Apply a coat of car wax to keep dirt from sticking in the future.
Some people said mild dish detergent.
Roughen the surface of the metal garage door with a hand sander and medium grit sandpaper.
White vinegar is a perfect cleaner for your metal doors and it is safe to use.
Sand the entire door not just the oxidized areas to help the primer stick to the door.
Working from the bottom panel up wash the steel garage door with a cloth or sponge soaked in the cleaning solution.
For steel or fiberglass doors apply a light coat of spray car wax.
Just spray the white vinegar onto the door allow it to sit for five minutes and then go over it with a wet sponge.
Clean your door from top to bottom making sure to clean behind the stop molding on the sides and top of the door.
Rinse off with garden hose.