Dura-Plate 2300 is a cementitious resurfacer for patching and filling voids in concrete and masonry structures. The coating consists of portland cement, hydrophobic thixotropes, fiber reinforcement, graded silica sand and other aggregates. Mixed from a three-component package, it is dry to the touch after three to four hours. The compound can be applied by trowel or by spray in temperatures as low as 40°F, with no need for additional heating. Sherwin-Williams; www.sherwin-williams.com