1.1 本规范适用于用于提供防雨功能的人造聚合物材料，该功能是一种用于排放液体水分和通风进入地面以上外墙组件的蒸汽水分的方法。符合本规范的防雨材料拟用于外部覆层产品后面，并覆盖100%（100 %) 设计用于提供防雨功能以抵抗水渗透的墙面积。 1.2 本规范涉及以下类型的挡风玻璃材料: 1.2.1 A型- 缠结网格材料。 1.2.2 B类- 成型/纹理板材。 1.2.3 C类- 成型板条。 1.3 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。

1.1 This specification is applicable to manufactured polymeric materials used to provide a rainscreen function, a means for the drainage of liquid moisture and the ventilation of vapor moisture that enters an above-grade exterior wall assembly. Rainscreen materials that comply with this specification are intended to be used behind exterior cladding products and intended to cover one hundred percent (100 %) of the wall area that is designed to provide a rainscreen function to resist water infiltration. 1.2 This specification addresses the following types of rainscreen materials: 1.2.1 Type A— entangled mesh materials. 1.2.2 Type B— formed/textured sheet material. 1.2.3 Type C— formed battens. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 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.