We wash Sidewalk's, Garage Floors, Patio's, and Driveway's to large Concrete surface's also retaining walls and wood. You name it we can wash it. We have a 30" & 24" surface cleaners and several choice's of wands.
We use biodegradable commercial cleaning agents. Next we use heated water to surface clean the entire area. This loosens the dirt, gum, pop and algae. Then we rinse away all debris from the washed concrete area's.