How to Clean Concrete Off Paint
- 1). Fill a spray bottle with vinegar or a mixture of muriatic acid and water (1 to 4 ratio). Muriatic acid is used to clean stone and pools. Use it if the concrete is dense and takes up a lot of space. If the concrete mark is small and looks like a shadow, use vinegar.
- 2). Spray the solution on the cement stain. Wait for it to bubble up. If you are using muriatic acid solution, wipe it with a foam sponge to remove the concrete. Wipe the cement with a cloth rag if you are using vinegar.
- 3). Rinse the spot with water once you remove the concrete. If you are outside, use a hose.
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