If you are committed to removing the paint using a stripper specifically for removing paint from concrete is going to be the best.
Remove paint from concrete block wall.
Remove paint stripper residue.
Lift off the paint with the edge of the scraper.
Paint stains on concrete completely disappear using this method leaving you with a clean surface for repainting if necessary soda blasting is also an environmentally friendly way to remove paint from concrete and causes no damage to the underlying concrete.
Removing old paint off basement walls is a time consuming effort.
For this stage of the job so long as you re working on a compact concrete patch you can probably get by with a wire scrub brush or a paint scraper.
Then wipe the wall with a soft cloth to remove any loose paint or dirt before starting.
Behr has a concrete and masonary stripper that is made for both vertical and horizontal surfaces.
In many places it s possible to pull off large strips of the paint white stuff right off the wall where it has bubbled away from the block.
Basement walls present a challenge because the cement walls are porous and this makes paint removal difficult.
You ll probably ultimately have to use a power washer but since most of the paint is gone you won t have to.
Use a putty knife or paint scraper to remove any current paint.
Chip away small portions at a time until as much of the paint is removed as possible.
The temptation is to scrape all the loose paint off and then repaint the walls.
In other places the latex paint comes off with a paint scraper but not nearly as easily.
Cinder blocks are mostly all a shade of gray or taupe so if your blocks are another color or have a shine to them they re probably painted.
Peeling does not always remove the pasty white.
Method 2 to remove paint from concrete with soda blasting.
Unfortunately there isn t a quick and easy solution to removing paint from a cinder block wall.
Soda blasting is a great way to remove paint from large areas of concrete.
This is one option.
The procedure for stripping cinder block and masonry walls is virtually the same as that for stripping paint from any material at the beginning of the job but because cinder block is so porous the end of the job the part where you remove the paint residue can be difficult.