How to Acid Wash Concrete: 12 Steps (with Pictures)
02/09/2020 · Hose down the entire area you want to wash, then use a plastic watering can to sprinkle your diluted acid onto the concrete. Brush the acid over the concrete with a push broom or a long masonry brush. Let the acid sit for 510 minutes, then rinse the area and scrub it with your push broom and neutralize the acid.