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8303 CrownShield MVB is a moisture vapor barrier suitable for concrete. It is intended for use when high moisture levels are present in the concrete which may cause loss of bond of moisture-sensitive flooring systems, including impervious and semi-pervious flooring, polyurethane, carpets, vinyl tiles, wood floors, etc. It meets or exceeds ASTM F3010 Standard Practice for Two-Component Resin Based Membrane-Forming Moisture Mitigation Systems for Use Under Resilient Floor Coverings. It is VOC Compliant in all states and provinces in North America.