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. Asbestos-cement insulating panels shall be composed of an insulating core sandwiched between, and bonded to, two facing sheets of asbestos-cement. The following test methods shall be performed: flexural strength; vapor permeability; thermal resistance; adhesive line bond; and dimensional measurements.

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 accordance with the methods covered in Section 9 .

1.3 The values stated in SI units are to be regarded as the standard. The values stated in parentheses are provided for information only.

1.4 Warning-Breathing of asbestos dust is hazardous. Asbestos and asbestos products present demonstrated health risks for users and for those with whom they come into contact. In addition to other precautions, when working with asbestos-cement products, minimize the dust that results. For information on the safe use of chrysoltile asbestos, refer to "Safe Use of Chrysotile Asbestos: A Manual on Preventive and Control Measures."

1.5 The following safety hazards caveat pertains only to the test method portion, Section 9, of this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.See 1.4 for a specific hazard warning.