Concrete floors can become covered with oil or grease stains, or shows signs of mildew or mold. Rough-textured concrete is the most difficult type of concrete to clean, because you lack a smooth canvas. You need some backup power to draw the dust and debris from the crevices in rough-textured concrete.
Vacuum the concrete surface to remove surface dust and dirt. A hand-held vacuum draws out dirt effectively, and so does a vacuum cleaner hose extension.
Hose down the concrete surface with a strong spray nozzle or power washer, if you have one available.
Scrub the surface of the moistened concrete with a firm, wire scrubbing brush. Use your hose to rinse the concrete a second time.
Mix a gallon of warm water with 2 or 3 ounces of trisodium phosphate and pour it directly over any difficult stains on your concrete. Use your wire brush to scrub the concrete surface and then rinse with water. You can find trisodium phosphate, or TSP, for sale in home improvement stores.
Pour TSP powder directly over any stains that refuse to lift. Leave the TSP in place for several days, then vacuum it up and try rinsing and scrubbing the stain once again.
Things You Will Need
- Vacuum cleaner
- Spray nozzle
- Power washer
- Scrubbing brush
- Trisodium phosphate
- Do not attempt to put TSP or any other household cleaning supplies inside a power washer. A power washer should only be filled with water or power-washing detergents.
- Do not use a metallic brush on concrete, because it can scratch the concrete.
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