UCoat is a water-based epoxy primer designed for use over concrete or wood substrates. Ideal for UCoat It low-build epoxy systems, it can be applied to wet or damp surfaces to create a superior bond to the substrate. UCoat is available in 12 colors with a satin to semi-gloss finish and offers typical coverage of up to 575 sq. ft. per gallon. This low-odor, low-VOC, non-flammable coating is easy to apply and safe for a wide range of environments.