How About Concrete Preparation Methods?
The preferred method for concrete surface preparation in most cases is grinding of all horizontal surfaces. Shot-blasting is another good method for mechanically abrading concrete to receive a coating and is basically recommended for heavier duty epoxy mortars or urethane cement systems. Chemical preparation, although acceptable and commonly used, is a less desirable method of surface preparation due to the potential for insufficient recovery of the cleaning solutions and the surface being left un-abraded. Grinding of a concrete substrate is by far the most effective surface preparation technique able, both from a cost and environmental standpoint.
Grinders come in various sizes from smaller handheld grinders to large walk behind versions that rotate discs (cup wheels) basically embedded with diamonds across the concrete. There are many different types of cup wheels able from more to less aggressive for removing different types of existing floor coverings (mastic, epoxy, urethane and so on). Grinders remove the higher layer and opens up the concrete so a floor coating can readily penetrate and get a good mechanical bond. Grinders provide a more even surface as opposed to shot blasting which can leave the surface pitted. They are also good for smoothing out imperfections and high spots in the concrete which cannot be accomplished chemical preparation.
Horizon Epoxy Floor, as a company of many years of experience in this field, has been doing the best to make the customers happy and satisfied. In case you are interested or you have any question we will be highly glad to hear from you.