Ultra Z Poxy is an epoxy coating system for both countertops and floors. It is among the clearest and hardest epoxies on the market. It can be used over nearly any substrate including but not limited to concrete, wood, laminate and stone. Can be used as a clear coat sealer or add solid color pigments and metallic powders to create nearly any look imaginable. All of this is backed by the outstanding customer service and support that Concrete Countertop Solutions is known for. 100% countertop safe. Not intended for outdoor use. Will darken concrete if used as a clear coat. To prevent darkening, Aqua-Poxy can be used as a primer coat.