This scrub action should remove most of the paint as well.
How to remove paint off concrete patio.
How long can vary depending on how old and hard the paint is.
I would recommend using a pressure washer for your final rinse this ensures that the entire chemical is removed.
In most instances the stripper should be applied to the surface and left undisturbed for a specific amount of time.
Apply paint stripper in a thick even layer on the concrete until the stripper is twice as thick as the paint on the concrete.
It has a vacuum attachment which then cleans up the released beads dusts and debris by suction.
To get oil out of concrete or remove unsightly paint or other stains fill both buckets with hot or warm water and add several squirts of dish soap to one of the buckets.
Once most of the paint comes off the concrete wash it thoroughly with a hose to remove any stubborn residue.
Apply the acid directly from the bottle with a sponge or cloth.
Use the edge of a scraper to remove as much of the paint as possible.
Remove old paint from a smaller patio 10 x 10 or so by mixing 1 cup of dishwasher soap and 2 quarts of hot water.
The abrasive material forced out under high pressure on the affected spot of concrete surface helps in paint removal.
You will want to apply behr s concrete stain paint stripper to remove as much as you can of the existing material.
Repeat by sections until all of the old paint is gone.
Pour the solution on a small section of painted concrete and allow it to stand for 10 to 15 minutes.
Break up the paint with the wire brush and scrape it away with the scraper.
It may require a couple of applications to achieve your goal.
Shot blasters though costly can be used to remove paint stains from concrete.
Sweep the area to clean away dirt and debris.
Clean the concrete surface thoroughly and let dry.
Use a wire scrub brush or a scraper to remove the loosened paint.
Use a paintbrush or a paint sprayer to apply the paint stripper.
Allow it to remain on the paint long enough to dissolve the paint.
When the paint is soft you can pry it of with a hand scraper and wire brush then rinse with fresh water.