ASTM E 2785a:2025

1.1 This practice evaluates a change in physical properties of firestop materials after exposure to an enhanced environmental factor. This practice does not evaluate the fire performance of the firestop materials. 1.2 This practice uses the following exposures: 1.2.1 Elevated temperature, 1.2.2 High humidity, 1.2.3 Carbon dioxide and sulfur dioxide with moisture present, 1.2.4 Water immersion, 1.2.5 Temperature cycling, 1.2.6 Wet-freeze-dry cycling, and 1.2.7 Weathering. 1.3 This practice establishes indicators that will aid in determining the use of the tested material in buildings. 1.4 This practice evaluates the properties of component products used within a firestop system, and does not evaluate the properties of assembled firestop systems. Note 1: This practice does not preclude the possibility of exposing complete firestop systems to one or more severe environmental exposures and then exposing the complete firestop system to a fire test. After subjecting materials to exposures covered in this practice, the results of a fire test can be affected positively or negatively. 1.5 This practice is intended to be a screening method in the evaluation of the change in physical properties of a specific material before and after various specified enhanced environmental factors. Individual tests are not intended to be the only determining factor in evaluating or selecting a firestop material because each test has limitations. 1.6 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.7 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

13.220.10, 13.220.40