This water-based urethane sealer and finish revolutionizes the way hard surface floors are sealed. It can be applied effortlessly over new and old hard surface floors. It is resistant to a variety of chemicals. Ease of maintenance is exceptional and requires no etching before application. Recommended for use on all types of stone flooring (brick, marble, slate, terrazzo and concrete-new and old, resilient tile, quarry and non-glazed ceramic tile).