1.1 本规范涵盖PB外部绝缘和饰面系统（EIFS），其定义为外部非承重墙覆盖物，在要求可燃或不可燃、耐火或不耐火的墙上提供耐候外墙围护结构。此外，PB EIFS是一种描述为应用于发泡聚苯乙烯或聚异氰脲酸酯绝缘板、绝缘板到基材的粘合剂或机械附件或两者、玻璃纤维增强网、绝缘板表面的底涂层和纹理保护面漆上的系统。 1.2 本规范不包括带排水的PB级EIF。 1.3 本规范规定了EIFS产品在正常使用条件下的使用资格，不用于评估在用EIFS安装。 1.4 以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 1.5 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和健康实践，并确定监管限制的适用性。

1.1 This specification covers PB Exterior Insulation and Finish Systems (EIFS) defined as an exterior, non-bearing wall covering providing a weather-resistant exterior wall envelope on walls required to be combustible or noncombustible, fire-resistance-rated or nonfire-resistance-rated. Further, PB EIFS is a system described as being applied over expanded polystyrene or polyisocyanurate insulation board, an adhesive or mechanical attachment of the insulation board to a substrate, or both, glass fiber reinforcing mesh, a base coat on the face of the insulation board, and a textured protective finish coat. 1.2 This specification does not cover Class PB EIFS with drainage. 1.3 This specification qualifies EIFS products for use in normal service conditions and is not for evaluating in service EIFS installations. 1.4 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. 1.5 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.