DensDeck Prime Roof Boards combine the features of DensDeck Roof Boards (fire resistance, strength and dimensional stability) with an enhanced surface treatment. The coated surface of DensDeck Prime is designed to provide an ideal substrate for a wide variety of adhered roofing systems by allowing a uniform spread of adhesives, which results in a strong, consistent bond. It also demonstrates greater flexural strength and pull-through resistance, and can be used in cold mastic, torch-applied modified bitumen as well as fully adhered, single-ply systems. DensDeck Prime Roof Boards are resistant to mold growth, scoring a rating of 10 under the ASTM D 3273 test method. For more information, visit Booth 1143 or www.densdeck.com.