How to Remove Spray Paint from Exterior Brick and Cement

Neal asked: How do I remove white spray paint from the exterior brick and cement floor of our house? It has been on for about two months. My 15 year old daughter used our house to hold up a mirror that she sprayed white. Due to overspray and not asking me first, we now have a line of paint on the brick and on the concrete floor. It has been there two months. We have used mineral spirits, Goof Off, Goo Gone and MEK to no avail. Please help. Thank you!

Spray paint is notoriously difficult to remove from porous surfaces like brick, mortar, and concrete. 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.

You Will Need:

Steps to Remove the Paint:

  1. Pour Wipe Out Porous Graffiti Remover into a clean spray bottle. To ensure you do not inadvertently mix chemicals, make sure the bottle is clean.
  2. Spray Wipe Out over the paint to be removed.
  3. Wait 15-20 minutes in warm weather, longer in cold. The paint will begin to dissolve on contact with the Wipe Out.
  4. Pressure wash the area at 1500-2000 psi. For best results, use hot water.
  5. Repeat if needed.

Additional Tips and Advice

  • One quart of Wipe Out will clean approximately 25 square feet of graffiti, depending on how thick the paint layers are.
  • Another option is to use paint thinner. Be sure to wear safety gear, eye protection in particular, and scrub with a nylon bristled brush until clean. This option will be labor intensive.
  • Do not use acids or a metal bristled brush for this job. Either one may etch the brick, and the metal bristles could leave rust stains behind. If you intend to etch the brick, be prepared to do the entire wall (or building) so it will match, then apply a sealer to protect stripped/etched brick or concrete.

Comments

  1. Robert says:

    You can also use automotive break cleaner/carburetor cleaner, which is compressed lacquer thinner. This will get into to the pores to liquefy the spray paint. Have a cloth for drips, as the liquid paint/thinner mix will run down your brickwork and spread the stain. Be aware, lacquer thinner works best on non-porous surfaces.

  2. Chris says:

    I just used brake cleaner to remove spray paint from my brick wall and it worked wonderfully…It blew it right off and I didn’t even have to get my hands dirty.

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