1K URETHANE is a water based, single component, protective finish designed to seal and enhance the color of concrete pavers. 1K Urethane penetrates into the surface and produces a tough, durable, clear film that will enhance the pavers color similar to its solvent based counterparts, bind the joint sand and protect against water damage, staining and UV ray damage. 1K Urethane also provides mildew protection and tremendous resistance against wear from both foot and vehicular traffic. 1K Urethane may be applied to damp pavers which allows for same day cleaning and sealing.