Concrete polishing involves a combination of chemical and mechanical steps to achieve a smooth and aesthetically pleasing concrete finish. The mechanical process involves the use of specialized tools, often encased with diamonds for easy honing and grinding of surfaces. The other parts of the process, the chemical process, uses chemicals like densifiers and hardeners to harden the concrete.
The Concrete Polishing Process
Concrete polishing involves various steps:
Floor Preparation
The first step is removing old flooring (carpets, vinyl, tile) and inspecting the floor and removing anything that can cause damage to the machines such as protruding nails.
Hardness Testing
This step involves testing the floor to establish if it is hard enough. The required hardness is 4000 psi or higher to ensure the floor is hard and won’t crack under pressure.
Patching
Patching is the process of adding self levelling compound and covering of any cracks and micro pits with grout for easy concrete polishing, in the aim of finishing with a level floor that will be smooth, level and free from bumps.
Initial Grinding
In this step, you are required to use low-grit diamonds (16-20 grit) to even out the surface until you achieve a flat floor.
Floor hardening or densifying.
In this step, densifying solutions are used to harden the concrete surface in readiness for polishing and grinding. The concrete surface needs to have at least a hardness of 32-40 MPa (mega pascals) for it to undergo grinding.
Honing
Honing is using progressively finer abrasives (200-400-grit resin) to refine the hard surface.
Polishing
Polishing is performed using a finer grit to achieve your desired sheen.
Key Benefits of Polished Surfaces
Polished surfaces have various benefits:
Provides Surface Strength
Polished concrete has incredible strength that enables it to withstand vibration caused by heavy equipment.
Builds Slip Resistance
A highly polished surface might give a wet and slippery illusion, but that is not the case. On the contrary, polished surfaces minimize slipping.
Performance, Durability, and Longevity
Grinding, honing, and concrete polishing minimize imperfections and improve the surface. Additionally, the densifiers harden the surface and protect it from wear and tear.
Aesthetically Pleasing
Unlike other surfaces, polished concrete has a visual appeal. The shine gives the concrete a luxurious look. Additionally, there are various designs to choose from, ensuring you are up to date with the latest designs.
Challenges of Concrete Polishing
Concrete polishing might not be the most suitable solution in some instances. It has a few limitations, including the following:
High-Moisture Levels
Polished concrete retains a lot of moisture, which brings about problems like peeling and cloudiness.
Dust Management Can Be Difficult
Managing dust during polishing and grinding can be daunting in spaces with poor ventilation.
The Process is time-consuming.
The polishing process requires a lot of time to complete. Rushing the process can result in an uneven finish, which may require you to redo the polishing.
Temperature Sensitivity
Polished concrete may not be an ideal solution for areas with a cold climate, as the concrete can get very cold. When this happens, you might need to look for a heating solution.
Final Thoughts
In conclusion, concrete polishing remains a superior flooring solution. It brings out aesthetics, and durability. However, you have to be financially well prepared, as the entire process can be quite expensive and time-consuming. Additionally, you might specifically need professional assistance as concrete polishing involves various steps. Nevertheless, concrete polishing is a worthy investment as it offers a long-lasting elegance.