USG ME's Cement Surfaces Finishing Solutions are crafted from a combination of Portland cement and dry latex polymers. They are ideal for both interior and exterior applications, offering superior durability and resistance to wet conditions. These solutions, when prepared on-site with water and strengthened with Durock brand external tape at board connections, inner corners, and outside edges, meet or surpass stringent standards such as EN 99E-1, ASTM C472-79, C266-86, and C109.