For external walls both sandblasting and power washing are tried and tested methods of removing old paint from hard surfaces like concrete.
How to remove paint off concrete wall.
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.
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.
This is one option.
Meanwhile sweep or wipe off the concrete removing as much loose dust dirt and debris as possible.
The most common way to remove paint is by scraping it off and the same is true for concrete walls.
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.
Dunk a stiff bristle brush into the water bucket and scrub the painted surface of the concrete.
To remove paint from concrete first sweep the concrete to clean the area you ll be working on.
Basement walls present a challenge because the cement walls are porous and this makes paint removal difficult.
Both methods create relatively less dust as grinder wire brush.
The temptation is to scrape all the loose paint off and then repaint the walls.
Here is another video of removing a paint using an chain paint remover and diamond hole drill.
Then wipe the wall with a soft cloth to remove any loose paint or dirt before starting.
Method 2 to remove paint from concrete with soda blasting.
Use the edge of a scraper to remove as much of the paint as possible.
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.
Sweep the area to clean away dirt and debris.
Then put on a dust mask gloves and protective eyewear.
Use a paint scraper to scrape up any thick globs of paint that are sticking up off of the concrete.
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.
Soda blasting is a great way to remove paint from large areas of concrete.