In order to get a clean look from fresh paint or to revert to a bare concrete look you will need to begin the project by removing the old paint.
How to get paint off of concrete wall.
Exterior house paint can crack and peel on concrete.
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.
Use a paint scraper to scrape up any thick globs of paint that are sticking up off of the concrete.
Sweep the area to clean away dirt and debris.
Basement walls present a challenge because the cement walls are porous and this makes paint removal difficult.
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.
Masonry paint 20 per gallon can be tinted and is much thicker than exterior paint.
Dunk a stiff bristle brush into the water bucket and scrub the painted surface of the concrete.
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.
To remove paint from concrete first sweep the concrete to clean the area you ll be working on.
You ll probably ultimately have to use a power washer but since most of the paint is gone you won t have to.
Remove paint stripper residue.
Use the edge of a scraper to remove as much of the paint as possible.
Method 2 to remove paint from concrete with soda blasting.
Paint can be applied to the concrete to gain a fresh new look.
The temptation is to scrape all the loose paint off and then repaint the walls.
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.
Removing old paint off basement walls is a time consuming effort.
Soda blasting is a great way to remove paint from large areas of concrete.
The most common way to remove paint is by scraping it off and the same is true for concrete walls.
Masonry paint also called elastomeric paint or elastomeric wall coating is a good choice for concrete painting because it contains binders that contract and expand with the concrete.
Then wipe the wall with a soft cloth to remove any loose paint or dirt before starting.