1.1 This specification covers asbestos-cement insulating panels consisting of a core of insulating fiber board sandwiched between, and bonded to, two sheets of asbestos-cement facing board. Asbestos-cement insulating panels are designed for exterior and interior walls, partitions, curtain walls, roof decks, and for decorative purposes.1.2 All measurements and tests necessary for determining the conformity of asbestos-cement insulating panels with this specification are made in accordan