| Etch n' Clean Application Instructions [Click Here For A Printable Version ] Summary No matter how new OR clean the concrete is, it will need a rough textured surface in order to achieve maximum epoxy adhesion. The rougher the better. There are many ways to etch (or roughen) the surface of the concrete: Acid Etching (using muriatic acid or our etch n' clean solution), Grinding the surface with a Floor Grinder/Scarifier, or Shot Blasting. PROPERLY ETCHING THE CONCRETE IS THE SINGLE MOST IMPORTANT PART OF APPLYING AN EPOXY FLOOR SYSTEM. The key here is to open up the pores of the concrete so the epoxy has something to sink into. If the concrete is trowelled to a glass-like finish you may have to etch multiple times to get the surface to the right texture. In the case where you will need to etch the concrete again, Muriatic Acid is a more aggressive acid that should be considered. Though much less user-friendly than our etch n' clean (note: it does not have a cleaning agent so we advise using the Etch N' Clean prior to Muriatic Acid). If you wish you use the Muriatic Acid please use with caution. Follow the tutorial below: Concrete floors require preparation before applying epoxy coating system. The preparation usually involves cleaning the surface to remove oil and other unwanted contaminants then "profiling" the concrete by etching with acid or by mechanical abrasion (ie;shot-blasting or etching with a diamond grinder). If the concrete is new or does not have heavy oil contamination it still needs to be etched. Etching / Roughening the concrete will provide proper epoxy adhesion. The Original Color Chips Floor Coating System Etch 'n Clean will provide both the cleaning andthe profiling in one operation. New concrete may have been treated with a sealer (ie:"cure & seal") to provide resistance to water. Etch 'n Clean will NOT properly etch a sealed floor. However, if the concrete is very old, there could be a possibility the sealer has 'worn off'. You can pour water on the concrete to see if it soaks in to test. If the concrete has been steel-trowelled, the surface will be very smooth. This finishing technique works fine cement particles to the surface creating a very hard, dense finish. Steel-trowelled floorsmay require multiple applications to achieve the desired profile. Equipment
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