Grinding (or “grind and seal”) is a swift process. Grinding saves an estimated 60% of the total steps required to achieve a full polished concrete finish. A grinder is used on the surface to remove as many imperfections as possible to achieve the desired exposure. A clear, penetrating sealer is then applied across the surface to make it impregnable to other substances. The result is a smooth surface, but one that is lacking the reflectiveness and high-gloss sheen that polishing achieves.