Previously, polished concrete floors were based on the standard grind and sealing process. This process required grinding to the required amount of aggregate exposure and removing scratches then applying different sealers (polyurethane commonly used) to create the finish wanted like a wet glossy look.
These sacrificial coatings require a long term maintenance program which consists of stripping and re-sealing the floor on a regular basis in order to keep the polished concrete looking its best. This represents expensive on-going maintenance costs. It also requires good ventilation, for the concrete to have cured for a minimum amount of time and for the floors to be left to dry for a few days before use. This means that there is more down time on a project and does not allow for fast turnaround times which can be critical in commercial projects.
This option is often used for older existing concrete where you want the polished concrete look but the concrete is of lessor quality that does not allow us to use the methods of diamond polished concrete. This method enables anyone to have the polished concrete look.