Johns Manville Nailboard® 1-1/2" x 4' x 8' with 7/16" OSB Facing R-6.8

Johns Manville Nailboard® is a rigid roof insulation board composed of a closed cell polyisocyanurate foam core bonded in the foaming process to either 7/16-inch (11 millimeters) or 5/8-inch (16 milimeters) oriented strand board (OSB) on one side and a universal fiberglass reinforced facer on the other. This Nailboard®meets the physical property requirements of ASTM C 1289 and Federal Specification HH-I-1972/Gen and HH-I-1972/2.