Concrete, that dull, ugly, gray stuff used for sidewalks, garage floor, and bridges, is a material that we are all familiar with but, it does not have to look that way! Concrete can be as smooth, diverse, and glossy as granite or marble with the advantage of being durable, long lasting, and economical. Polishing is the environmentally friendly process used to accomplish this. Concrete can be polished after it has cured for 28 days or years after it has been poured. The process used to polish concrete is similar to that used to polish a rough piece of wood. Diamonds embedded in pads are used; starting with a low grit (40) metal bond pad and working up to a high grit (3,000) resin bond pads for the finish Polishing.
The first step in concrete polishing is to remove any old flooring. The concrete is then ground with low grit metal bond grinding pads to remove any remaining glue, epoxy, paint, or other coatings and to open up the concrete surface for the hardener. It might take 2-4 steps to produce a smooth, level surface. Once you have a surface that has been smoothed and is free from contaminates, and cracks and holes need to be filled. A variety of fillers can be used depending on the final finished desired.
Polished Concrete Floor
After the filler is set, the floor will then be ground again. If a lot of aggregate is desired in the floor, a floor planer can be used to remove concrete until aggregate can be see. Hardener is essential for soft or crumbly concrete. These concretes cannot be polished satisfactorily without the application of a hardener. At each step, the pads are replaced with a higher grit until the desired sheen is reached.