New Standard Specification for Liquid-Applied, Single-Component, Moisture-Triggered, Aliphatic Polyurethane Roofing and Waterproofing Membranes
1. Scope
1.1 This specification covers in-situ, applied, single-component, moisture-triggered, aliphatic polyurethanes intended to form an elastomeric single-ply primary
water and weather barrier. The cured membrane may or may not contain reinforcements.
1.2 This class of materials (single-component, aliphatic, polyurethane) is characterized by its ability to use atmospheric or ambient moisture or both to trigger the curing process only. Moisture takes no further part in the reaction.
1.3 The tests and property limits used to characterize the liquid material and cured membrane are values intended to ensure minimum quality for the intended purpose. In-place roof system design criteria, such as fire resistance, material compatibility, and uplift resistance, among others, are factors that shall be considered but are beyond the scope of this standard.
1.4 The values stated in SI units are to be regarded as the standard. The values stated in parentheses are for information only.
1.5 This standard may involve hazardous materials, operations, and equipment. 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 requirements prior to use.
WK7476 - New Standard Specification for Liquid-Applied, Single-Component, Moisture-Triggered, Aliphatic Polyurethane Roofing and Waterproofing Membranes | ASTM
