The fix usually depends on what kind of masonry you re cleaning and the type of paint used but when you use a product specifically designed to remove graffiti things get much easier.
How to get spray paint off concrete walls.
Use a paint scraper to scrape up any thick globs of paint that are sticking up off of the concrete.
Then put on a dust mask gloves and protective eyewear.
Removing spray paint from concrete.
Meanwhile sweep or wipe off the concrete removing as much loose dust dirt and debris as possible.
Now you re ready to start painting.
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.
Sweep the area to clean away dirt and debris.
Always make sure to wear protective gear like goggles respirator and clothes that fully cover and protect you because sandblasting will create a localized.
Over time layers of paint will build up on the concrete and eventually begin to flake and peel.
Brush paint onto the perimeter of the concrete.
Sweep the area or wipe it down with a dry cloth depending on the orientation of the surface.
Use the edge of a scraper to remove as much of the paint as possible.
Then maneuver the sandblaster over the concrete to blast off the spray paint that has embedded itself deep into the concrete.
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.
Then wipe the wall with a soft cloth to remove any loose paint or dirt before starting.
Now proceed to work the soapy water or tsp into the concrete by means of a long handled brush.
Apply the stripper again if needed.
Spray paint on a concrete surface either in the form of unwanted drift from a project or faded lines or designs that were once desired is unsightly and often.
Spray paint is notoriously difficult to remove from porous surfaces like brick mortar and concrete.
To remove paint from concrete first sweep the concrete to clean the area you ll be working on.
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.
Allow the stripper to remain on the surface for the recommended time period then scrape it off with a paint scraper or a squeegee.
This method gets rid of the fresh as well as deep old stains.
The most common way to remove paint is by scraping it off and the same is true for concrete walls.
Spread a thick layer of paint stripper over the paint with a cheap paintbrush.