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.
How to remove paint off concrete wall.
Then put on a dust mask gloves and protective eyewear.
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.
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.
Basement walls present a challenge because the cement walls are porous and this makes paint removal difficult.
Seek advice from your rental company before deciding on these methods since both use high pressured water and could cause damage to your wall and yourself if not handled properly.
This is one option.
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.
Dunk a stiff bristle brush into the water bucket and scrub the painted surface of the concrete.
Both methods create relatively less dust as grinder wire brush.
Step 1 decide what method you ll use.
Now proceed to work the soapy water or tsp into the concrete by means of a long handled brush.
Soda blasting is a great way to remove paint from large areas of concrete.
The temptation is to scrape all the loose paint off and then repaint the walls.
Use a paint scraper to scrape up any thick globs of paint that are sticking up off of the concrete.
Use the edge of a scraper to remove as much of the paint as possible.
For external walls both sandblasting and power washing are tried and tested methods of removing old paint from hard surfaces like concrete.
Removing old paint off basement walls is a time consuming effort.
The most common way to remove paint is by scraping it off and the same is true for concrete walls.
You ll probably ultimately have to use a power washer but since most of the paint is gone you won t have to.
Method 2 to remove paint from concrete with soda blasting.
Then wipe the wall with a soft cloth to remove any loose paint or dirt before starting.
Here is another video of removing a paint using an chain paint remover and diamond hole drill.