Mechanically polished concrete is the ultimate in flooring and is an expensive and very time consuming process of up to 15 steps. Do not get this finish confused with a grind and seal. A polished concrete floor done properly is ground to the desired stone exposure, honed, densified and grouted and finished off at 800 to 3000 grit depending on gloss level. This finish suits a high quality properly specified 32mpa concrete mix. Polished concrete is suitable for domestic, commercial and industrial projects.