When you set out to remove paint from concrete the first thing to do is clean the surface of the concrete thoroughly.
How do you remove paint from concrete block walls.
Basement walls present a challenge because the cement walls are porous and this makes paint removal difficult.
Paint the entire wall with a thin coat of a concrete sealer or concrete primer.
Use a paint scraper to scrape up any thick globs of paint that are sticking up off of the concrete.
You ll probably ultimately have to use a power washer but since most of the paint is gone you won t have to.
Fortunately this is not the case since there are several cheap ways of removing paint from concrete walls this allows room for renovation since you may decide to change the color of a particular room or to simply remove the paint and leave the room as it is.
The temptation is to scrape all the loose paint off and then repaint the walls.
This is one option.
Allow it to dry for four hours or for the time indicated on the sealer label.
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.
You may think that once you paint a concrete wall the paint can never be removed again.
Apply an even coat with a wide paintbrush.
To remove paint from concrete first sweep the concrete to clean the area you ll be working on.
Prepare a solution of soap and water or better yet diluted trisodium.