These test methods provide a choice between two methods of exposing fire-retardant-treated wood products or assemblies to controlled accelerated weathering or conditioning.

The conditioning simulates effects of leaching, drying, temperature and, in one method, ultraviolet light.

Method A is the method normally specified for regulatory purposes when testing fire-retardant-treated wood that is intended for exterior applications.

1.1 This practice covers the durability of a fire-retardant treatment of wood under exposure to accelerated weathering. Two conditioning methods are described, both suitable for application to a test specimen prior to subjecting that specimen to an appropriate fire test.

1.2 This practice is applicable to wood products that have been treated with fire-retardant chemicals by pressure impregnation.

1.3 The test specimens are to be in the form of, or suitable for fabrication into, test specimens , such as those described in Test Methods E 84, E 108, and E 1354 and other standard test methods for evaluating the fire performance of fire-retardant-treated wood products.

1.4 The text of these test methods references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of these test methods.

1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are for information only.

1.6 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.