There are wide ranges of flooring options available in the market these days, and one of them is the polished concrete flooring. This type of flooring has seen increased demand worldwide as these are durable and long lasting and these also do not require a lot of maintenance. There are specialized concrete floor grinders available in the market to help you with the polishing. These work the same way as used for the wood refinished – with the help of floor sanders. Concrete grinders use a metal bond of diamond abrasives. These are then followed by resin bond diamonds and so at the end the floor gets the shine and polish that is expected of them.
- Just as sandpaper has different levels of aggressiveness or abrasiveness, similarly the concrete diamond also has different levels. The lowest is 16grit and the highest is 3000 grit. When the grit is lower, the coarseness is more and the tool is more aggressive. When a high shine is needed, grits up to 3000 are used.
- A concrete floor that is densified and hardened and polished well has high durability. A tile normally lasts for up to 20 years but polished concrete has the potential to last many more years.
- Polished concrete and the terrazzo floorings use existing substrate. If any kind of flooring other than these are used, it normally goes above these substrate and so these are prone to crack, peel, chip, flake or bubble at some point of time or the other.
- When you want to polish a concrete floor, you will need to see what condition the concrete is in. The hardness of the concrete needs to be tested and the surface condition also needs to be seen. The hardness is checked and tested with MOHS which is a tester for concrete hardness.
- Once this is done, any coatings or sealers are to be removed. The surface cracks need to be repaired and filled in and if there are minor blemishes or even if there is a light coating; it will be removed during the initial grinding process.
- Then, the rough grinding needs to be done. This should be done with the metal bond diamond abrasive. This helps to prepare the concrete so that it can be smoothened. This normally involves three or four steps and this is entirely based on the condition that concrete is in.
- Then a liquid chemical hardener is applied to the concrete. This solidifies surface and it becomes dense which gives extra protection from penetration by water as well as from staining. When the concrete is hard, the polishing can be properly done on it.
- After this, there are several passes made. These buffs out the scratches that have taken place during the previous passes. As and when this gets smoother, the next grit level needs to be applied. This is totally dependent on not only the surface of the floor but also on the material and the amount of it that each pass is removing.
- The last step when you have got the look you have wanted and the level of polish has been achieved is to protect the surface of the floor. This protection is done by using a commercial product which is meant to guard against stains. This needed especially if the surface has grease or chemicals or oil on it. The way these work is that these solutions penetrate the surface of the concrete floor and thus the floor is then made more resistant to whatever dirt and stains are on the surface. These stain guard products are applied either by using a pump sprayer or using a wax applicator.