Can concrete polishing remove oil stains?
It’s possible that the polishing process could remove an oil stain, or any other type of stain, depending on the size and age of the stain. The polishing process involves several rounds of grinding with a variety of grinding wheel grits. By grinding down the floor’s surface, it’s possible that we could grind down farther than the stain penetrated, thus removing it. However, many stains, especially oil stains, can deeply penetrate unsealed or aging concrete floors. It’s much more likely that concrete polishing would simply lighten the stain rather than altogether remove it.