The most durable urethane mortar floor systems are typically trowelled, and are applied at ¼ to 3/8 inch thickness, and provide a seamless matte finish. These trowel applied urethane mortars have physical properties that are twice that of concrete. Self-leveling "slurry" systems were originally developed for contractors that were not able to install the urethane mortar floors.For more information please call us at1-800-808-7773 extension 13