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Concrete Surfaces


In Part I of our series on concrete surface preparation, we looked at how to detect, remove and repair unsound concrete. In Part II, we saw the different kinds of surface contaminants for concrete and how to clean them. In Part III, we look at methods for roughening the surface in preparation for the coating or overlayment.

Adequately Roughened

With the concrete sound and contaminant-free, all that’s left is to adequately roughen the surface, but to what degree? The blasted concrete surface is too rough to be measured by tape and quantified in microns or mils.

The most effective reference tool for determining concrete surface profiles is the molded rubber comparator chips, available from the International Concrete Repair Institute. These samples replicate ten grades of surface roughness, and are designed for direct visual and tactile comparison to the concrete surface in question.

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