How to Polish Stained Concrete
- 1). Clean the floor to remove as much dirt and debris as possible. Sweep out the entire room thoroughly, so you do not drive any dirt deeper into the floor.
- 2). Polish the floor with the coarsest-grit polishing disk that you have. This should be from 250 to 500. If you do not believe that the stain has permeated the concrete very well, start with 500 instead of 250. The coarse grit will remove any stains and extremely rough patches from the concrete's surface. Go over the entire floor with the coarse-grit disk. Use circular motions, but overlap as little as possible.
- 3). Move on to a finer-grit polishing disk. Keep an eye on the color of the concrete. As you polish, you will wear away a layer of the stain. Limit the number of times you go over any one place in the concrete floor until you have reached the finest grit. Continue to use circular motions and limit overlapping as much as you can without missing any spots on the floor.
- 4). Finish off the floor with the finest-grit polishing disk (1500). This will give the concrete floor a glass-like sheen. Using great care and observing closely, start "lapping" as you polish; continue to use circular motions, but start to overlap your circles. If you wish, apply the concrete floor polish at this time using the floor grinder and the finest-grit disk to get extra sheen with less grinding. This will also give you a dirt-resistant finish.
