1.1本规程涵盖了现场或预制应用PI级外部绝缘和饰面系统（EIF）的最低要求和程序。PI类EIF是应用于聚异氰脲酸酯绝缘板上的系统，其中底漆范围不小于 1. / 16 在里面（1.6毫米）至 ¼ 在里面（6.4 mm），取决于封装在底漆中的非金属钢筋网层的数量。然后用各种纹理和颜色的不同厚度的面漆覆盖底涂层。绝缘板应涂覆在基材或开放框架上。 1.2本规程不包括带排水的PI类EIF。 有关信息，请咨询EIFS制作人。 1.3以英寸-磅为单位的数值应视为标准值。括号中给出的SI（公制）值是近似值，仅供参考。 1.4本标准的文本引用了提供解释性材料的注释和脚注。这些注释和脚注不应视为本标准的要求。 1.5 本标准可能涉及危险材料、操作和设备。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。 ====意义和用途====== 本规程提供了PI类EIF应用的最低要求。材料、混合物和细节的要求应包含在项目计划和规范中。请参阅指南 E1825 用于指导。

1.1 This practice covers the minimum requirements and procedures for field or prefabricated application of Class PI Exterior Insulation and Finish Systems (EIFS). Class PI EIFS are systems applied over polyisocyanurate insulation board, in which the base coat ranges from not less than 1 / 16 in. (1.6 mm) to ¼ in. (6.4 mm) in dry thickness, depending upon the number of nonmetallic reinforcing mesh layers encapsulated in the base coat. The base coat is then covered with a finish coat of various thickness in a variety of textures and colors. The insulation board shall be applied over a substrate or over open framing. 1.2 This practice does not cover Class PI EIFS with drainage. Consult the EIFS producer for information. 1.3 The values stated in inch-pound units are to be regarded as the standard. The SI (metric) values given in parentheses are approximate and are provided for information purposes only. 1.4 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes shall not be considered as requirements of the standard. 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 limitations prior to use. ====== Significance And Use ====== This practice provides minimum requirements for the application of Class PI EIFS. The requirements for materials, mixtures, and details shall be contained in the project plans and specifications. See Guide E1825 for guidance.