Conventional Plus The Conventional Plus system offers the same benefits as the Traditional but includes one more coat. The Conventional Plus adds a coat of Polyurethane over the 2 coats of 100% solid Hi-Build Epoxy. The urethane coat will provide increased strength as well as a high gloss chemical and scratch resistant shine. With the Conventional Plus your garage floor will be the envy of the neighborhood. This System includes the following: State of the Art Preperation Patching of Expansion Joints and Hairline fractures 2 coats of 100% solid Hi-Build epoxy A chemical resistant urethane top coat