Every major garage door manufacturer specifically says not to use a pressure washer because it will potentially damage your door and void your warranty.
Pressure wash garage walls.
From there water can damage insulation electrical wiring and can spur mold growth.
Bob vila interviews a contractor in the process of using a pressure washer to remove paint from exterior wood siding.
In general unless your garage is covered with caked on grease and dirt pressure washing with a cleaning solution like simple green should take care of most everything.
A pressure washer with about 3 gpm and 3000 psi is ideal for most concrete and brick cleaning jobs.
The water pressure is measured in pounds per square inch or psi.
Every spring homeowners set out to pressure wash their garage floors.
Plus if you re following along and washing your garage door at least twice a year you shouldn t have anything stuck on there that needs a pressure washer to get off.
Reasons to not pressure wash 1 water in the walls.
Check out my article on how to clean grease up off your garage floor for more details.
While it s possible to wash wood siding correctly there s also a good chance that water will find its way up and under the exterior surface if you use high pressure.
To me this is the worst kind of damage you can do with a high pressure washer to a house.
A high powered pressure washer can also dent aluminum and vinyl siding.
As the name suggests the machine is designed to shoot out water at great pressure which easily removes dirt and debris from a concrete garage floor.
Commercial pressure washers shoot water at pressures starting at 1500 psi which isn t too destructive but they can go upwards of 3300 psi which will blast through solid wood asphalt and even.
However a summer long onslaught of spider webs oil stains and dried leaves can turn any garage into a grease caked dirt haven.
If you do have grease or oil spills on your garage you should take care of them first.
Choose the tip with the widest angle that still gets the job done to prevent degrading the surface of the hardscape.