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The Process of Concrete Polishing

The process begins with the use of coarse metal bond diamond segments. The segments are coarse enough to remove minor pits, blemishes, stains, or light coatings from the floor, giving it a smooth feel. Depending on the condition of the concrete, this initial rough grinding is generally a two- to three- step process.

The next steps involve fine grinding of the concrete surface using resin bond diamond abrasives. Crews use ever-finer grits of polishing disks (a process called lapping) until the floor has the desired sheen. For an extremely high-gloss finish, a final grit of 1500 or finer may be used. Experienced polishing crews know when to switch to the next-finer grit by observing the floor surface and the amount of material being removed.

During the final polishing step, some contractors spread a commercial polishing compound onto the surface to give the floor a bit more sheen. These compounds also help clean any residue remaining on the surface from the polishing process and leave a dirt-resistant finish.