Ultra Flagship UV is an oil based polyurethane formulated for exterior and interior wood surfaces especially those surfaces that are subject to heavy wear such as doors, windows, floors and above waterline marine surfaces. Ultra Flagship may be applied to bare, bleached or stained wood. They are compatible with a variety of other Wood Kote products. Please refer to the Wood Kote Schedule of Product Compatibility and Recommended Dry Times. Ultra Flagship UV complies with the US Environmental Protection Agency (EPA) Volatile Organic Compound (VOC) emission requirements for Architectural and Industrial Maintenance coatings (effective 13Sep99). Ultra Flagship UV 250 complies with California SCAQMD Rule 1113 (effective 13 July 2007).