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PRAIRIE stone units do not require a field coat. However, the Midnight Groundface units are sampled with a glossy finish. A finish coat of a masonry commercial acrylic coating with a minimum of 20% solids may be applied. This would be applied to all PRAIRIE stone walls after cleandown and when the walls are completely dry. Use only in well-ventilated or open areas. Apply the acrylic evenly to cover the entire
surface without forming drips or runs. For maximum coverage and best appearance, apply the acrylic with airless spray equipment. Follow manufacturer's directions carefully. This coating will provide some extra resistance to moisture;
however, the facing is not intended for use as an impervious surface. If an impervious surface is required, compatible water repellent must be used to completely seal out moisture. Some interior applications may require a water-based coating material only. Always produce a sample area of the acrylic finish for architect/owner approval prior to applying the finish coat to the entire surface. Some approved sealers are: Chemprobe Coating Systems - Pylon 1422, TK Products - Brightseal and Diedrich Technologies Inc. - Kolorclassic Sealer.
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