1.1 This specification covers nonvulcanized rubber sheet made of EPDM (elastomeric terpolymer synthesized from ethylene, propylene and diene monomer) or CR (polychloroprene) intended for use as watertight roof flashing exposed to the weather.

1.2 The tests and property limits used to characterize these flashing materials are specific for each classification.

1.3 SI units shall be used in referee decisions.

1.4 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.