Electric power washers are safer than gas for use in enclosed spaces like in a garage start with a thorough sweeping to remove loose debris begin using your power washer at the back of your garage closest to the house and move forward toward the door.
Power washing garage door.
Use a pressure washer.
Don t use a pressure washer.
Rinse thoroughly with a hose but do not use a pressure washer.
You may also choose to use a pressure washer at a very low pressure setting.
Switch to high pressure and start spraying.
Pressure washers use 80 less water than a garden hose.
Wash both the interior and exterior using a sponge cloth and or soft brush.
Do not use harsh or abrasive detergents.
Start from the back of the garage and gradually push the dirty water outside.
Rinse off with garden hose.
You don t have to flood your garage to get it clean.
If the door is very dirty or mildew stained you can also use a very soft bristled brush.
When washing the garage door use one cup of nontoxic biodegradable cleaner mixed with two gallons of warm water.
Using a clean bucket mix a small amount of dish soap or car wash soap preferred with water.
Wash the door surfaces and windows of your garage with a mild liquid soap such as a car washing soap or dish washing soap and water.
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.
This can damage the painted surface of the door or the seals.
With a soft sponge or cloth apply the soap to the door in a circular motion.