To remove paint from concrete, simply wash the concrete surface with soap, apply a suitable chemical paint stripper, and then wash again. You need chemical paint stripper, a broom, a putty knife, soap, a wire scrub brush and water. The process takes at least 10 hours.
- Sweep the concrete surface
Sweep the concrete surface to remove the loose dirt. Prepare a solution of soap and water, and wash the surface using the wire scrub brush. Rinse the surface, and allow about three hours for it to dry.
- Scrape the surface, and apply the chemical paint stripper
Using a putty knife, scrape away any paint that peels. Sweep the surface again. Don the protective gear, and apply a layer of the chemical paint stripper on the concrete surface. Use oil-based stripper if the paint is oil-based. Allow the surface to sit for six to eight hours for the chemical reaction to take place.
- Wash and rinse the surface
Once the reaction has taken place, wash off the paint with water using a wire scrub brush and rinse the surface. Repeat the washing if necessary to remove any residue. For large surfaces, use a pressure washer. Leave the concrete surface to dry.