How to remove paint overspray from concrete?

Concrete is porous and easily absorbs spray paint, so you'll need some supplies and high-strength materials to remove it. Two trisodium phosphate (TSP) pressure washing and cleaning techniques can remove splashes and scratches from exterior or interior concrete surfaces, such as patios, entrances, and basement floors. I asked for the methods depending on the level of difficulty. Start with Method 1 and, if that doesn't work, move on to the next one.

Method 1 consists of spraying paint off concrete with items that you already have in the house: water, soap and a stiff bristle brush. As a reminder, I ordered these methods by level of difficulty, so I suggest you start with Method 1 and work your way down. If simple household detergents just don't work, it's time to bring out heavy weapons. Solvents such as acetone, paint thinner, denaturated alcohol, and turpentine can be effective in softening spray paint and making it easier to remove from concrete.

To keep things simple, choose a small (4.5 inch) to medium (6 inch) manual grinder and a paint stripper wheel (disc). If you're familiar with an angle grinder, this is a quick and easy way to remove spray paint from concrete with a minimum of hassle. Removing spray paint from concrete entrances, floors, walls and sidewalks requires a little effort and patience, but it's entirely feasible. Once you've removed the paint, rinse the concrete with water and a sponge or, if you're outside, a garden hose will do the trick, too.

Pressure washing is a highly effective method for cleaning a variety of substances and surfaces, and it works wonders when it comes to removing spray paint from concrete. Solvents known to remove paint include acetone, turpentine, xylene, naphtha, methylethylketone (MEK) and denatured alcohol. Washing the spray-painted area of concrete with soap and water is not only ideal for water-based spray paints, but also for freshly sprayed paints. As you may have guessed, the added heat from a pressure washer will be more effective when it comes to removing spray paint from concrete.

If you've tried all of the above DIY methods and still can't get rid of spray paint, it might be time to call a professional. Therefore, it is important to completely remove all the rest of the thinner and paint from the concrete. WD40 is a light-penetrating oil that can be effective in loosening latex spray paint from concrete surfaces. Motsenbocker's Lift Off spray paint graffiti remover is highly recommended, as it works on a variety of hard and porous surfaces, such as concrete.

Soda blasting is a relatively new way to remove paint from concrete, and it works the same way as sandblasting, but is smoother on the concrete surface.

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