Don t use a pressure washer.
Power washing garage door.
Start from the back of the garage and gradually push the dirty water outside.
With a soft sponge or cloth apply the soap to the door in a circular motion.
You don t have to flood your garage to get it clean.
All you have to do is dissolve about a cup of low phosphate detergent into 5 gallons of water and then wash your door.
Do not use harsh or abrasive detergents.
The high pressure will force the majority of the water outside.
If the door is very dirty or mildew stained you can also use a very soft bristled brush.
Wash both the interior and exterior using a sponge cloth and or soft brush.
Working from the bottom panel up wash the steel garage door with a cloth or sponge soaked in the cleaning solution.
Use a pressure washer.
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.
Pressure washers use 80 less water than a garden hose.
Using a clean bucket mix a small amount of dish soap or car wash soap preferred with water.
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.
When washing the garage door use one cup of nontoxic biodegradable cleaner mixed with two gallons of warm water.
Switch to high pressure and start spraying.
Rinse off with garden hose.
For steel or fiberglass doors apply a light coat of spray car wax.
You may also choose to use a pressure washer at a very low pressure setting.