HH-I-1972/2, FEDERAL SPECIFICATION, INSULATION BOARD, THERMAL, POLYURETHANE OR POLYISOCRYANURATE FACED WITH ASPHALT/ORGANIC FELT, ASPHALT/ASBESTOS FEL

HH-I-1972/2, FEDERAL SPECIFICATION, INSULATION BOARD, THERMAL, POLYURETHANE OR POLYISOCRYANURATE FACED WITH ASPHALT/ORGANIC FELT, ASPHALT/ASBESTOS FELT OR ASPHALT/GLASS FIBER FELT ON BOTH SIDES OF THE FOAM (12 AUG 1981)., This specification covers the requirements for faced thermal insulation boards composed of rigid cellular polyurethane or polyisocyanurate faced with asphalt/organic felts, asphalt/asbestos felts or asphalt/glass felts. This specification does not cover cryogenic applications. For intended use see 6.1 of HH-I-1972/GEN.