If there is still some paint leftover from the fist cycle let the concrete dry and repeat the process.
How to remove paint concrete wall.
When you set out to remove paint from concrete the first.
For exterior projects use a power washer to rid the wall of all dirt and dust.
Then wipe the wall with a soft cloth to remove any loose paint or dirt before starting.
If your project is indoors scrub the wall with soapy water and a scrub brush instead of using a power washer.
Clear out loose debris from any cracks or holes in the surface and repair with cement or filler such as latex masonry caulk.
Alcohol is a common household chemical that can be used to remove latex paint from concrete surfaces.
Remove loose paint with a scraper wire brush and cleaning solution.
Massage the alcohol into the stain to loosen the paint.
If some of the paint has already begun to chip or peel.
If possible remove any loose paint from concrete with a scraper or brush.
How to remove paint from concrete step 1.
Clean the concrete wall.
The most common way to remove paint is by scraping it off and the same is true for concrete walls.
If paint comes off on the rag the old paint is latex.
It is important that the area is free of loose paint oil grease or any foreign substance that may cause discoloration in your final paint job.
Before starting lay a cloth on the floor beneath the area you will be working on so that the flaking paint can be easily removed later on.
2 apply a chemical paint stripper to the concrete surface.
Clean a small area of the wall with warm water and detergent.
Dip a rag in alcohol and rub over the area.
This scrub action should remove most of the paint as well.
Scrub mortar joints and stubborn paint patches with a wire brush.
Dry the area with a towel.
If you applied a membrane much of the paint will come off when you remove it but you ll still have to scrape and scrub.
Use the edge of a scraper to remove as much of the paint as possible.
Once most of the paint comes off the concrete wash it thoroughly with a hose to remove any stubborn residue.
Dunk a stiff bristle brush into the water bucket and scrub the painted surface of the concrete.
Clean the concrete surface thoroughly and let dry.
Dip the brush into the soapy solution and scrub the area using circular motions.
Collect the paint residue and put it in contractor bags for disposal.
Peel the membrane if you used one and scrape off the paint using a paint scraper.
Scrape peeled or chipped areas and apply paint stripper.
After the stripper is set use the scrub brush to scrub it off.
Sweep the area to clean away dirt and debris.