Polished concrete floors are usually installed by first grinding a concrete slab to remove imperfections, then with progressively finer diamond-tipped grinding tools, the next few steps are known as ‘cutting’. After this step, the floor is sanded to produce a flat and smooth surface, and polishing is then used to make the floor nice and shiny. Polished concrete can also be made to resemble other materials like brick, so it can be used for outdoors, particularly in a backyard.
How to Choose Polish for Polished Concrete Floors
Diamond-tipped tools are often used when installing polished concrete floors because they have a higher level of reflectivity than other tools. Diamond reflectivity is necessary when working on polished concrete floors because the floor will have a very high reflective value if there are imperfections on the surface, because these imperfections will reflect light back into the room. In other words, you need to have high levels of reflectivity if you want to create a reflective floor. It’s also important to note that if you have uneven floors, then you should either sand them down using coarse grit sandpaper or clean them up with an acid cleaning solution, which will break up the dirt and remove small particulates. Polished floors will always have a high reflectivity level; however, this is not always the case and you might find that other floors have a lower reflectivity level than your polished floor.
There is another type of polishing that is sometimes seen on polished concrete floors – called exposed aggregate. This is when polishing is done on the top layer of the floor and leaves the lower layers untouched. With this type of polishing, imperfections are disguised by exposing aggregate on the underside of the floor. This is most commonly seen on surfaces like pool coping. Typically, it is better to expose aggregate exposed than polished aggregate exposed, since it produces a smoother surface overall.