Etching Concrete Floor For Painting. Some homeowners shy away from acid etching of their concrete floors for fear of the harmful effects of using and handling muriatic acid, the main component of acid etch flooring. To avoid disappointment it is best to prepare your concrete floor before you start painting, or you may end up with premature chipping or peeling of the new coating. If the oil or grease has seeped deeply into the concrete, the oil or grease may bleed back even after you clean the surface.
A smooth concrete floor must be roughened before paint will stick to it. Part 1 how to epoxy a concrete garage floor. Most concrete paints require etching and if they don't, do it anyway.
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However, etching (or washing) concrete with acid opens the pores of the concrete and prepares the surface to accept its next treatment. The alkalinity of new concrete makes for poor adherence of paint. The original color chips floor coating system etch 'n clean will provide both the cleaning and the profiling in one operation. Use the hard bristle broom to apply the etching agent and scrub all of the concrete.
