1.1 本规程涵盖了高压喷涂聚氨酯泡沫（SPF）的安装，作为建筑围护组件的隔热材料，包括:墙壁、天花板、阁楼、地板和爬行空间。本规程不适用于严格用作空气屏障系统组件的SPF或屋顶应用中使用的SPF。 1.2 建筑设计标准和SPF的选择超出了本规范的范围。 1.3 本规程涵盖的SPF隔热材料的使用通常受建筑规范或其他涉及防火性能的机构的监管。如果需要，材料的防火性能应通过适当的管理文件制定的标准防火测试方法来解决。 1.4 以国际单位制表示的数值应视为标准。 括号中给出的值仅供参考。 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）。本标准的使用者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。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 5.1 本规程概述了建议在建筑围护结构中正确安装喷涂聚氨酯泡沫（SPF）作为隔热材料的一般程序，包括:； 墙壁、天花板、阁楼、地板、爬行空间、阁楼和地基。 注2: SPF屋面安装不在本文件范围内。用户可能希望查阅指南 第5469页 和规范 第7425天 . 5.2 这种做法并非包罗万象；本规范仅用于补充制造商的详细说明、SPF行业最佳实践和法律可能制定的安全要求。

1.1 This practice covers the installation of high-pressure spray polyurethane foam (SPF) as an insulation for building enclosure assemblies including: walls, ceilings, attics, floors, and crawl spaces. This practice does not apply to SPF used strictly as a component for an air barrier system or for SPF used in roofing applications. 1.2 Building design criteria and selection of SPF are beyond the scope of this practice. 1.3 The use of SPF insulation covered by this practice is typically regulated by building codes or other agencies that address fire performance. Where required the fire performance of the material shall be addressed through standard fire test methods established by the appropriate governing documents. 1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 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. ====== Significance And Use ====== 5.1 This practice outlines general procedures that are recommended for correct installation of spray polyurethane foam (SPF) as an insulation in the building enclosure including; walls, ceilings, attics, floors, crawl spaces, attics and foundations. Note 2: SPF roofing installations are not covered by this document. Users may wish to consult Guide D5469 and Specification D7425 . 5.2 This practice is not all-inclusive; this practice is intended only to supplement detailed instructions from manufacturers, SPF industry best practices and safety requirements as may be established by law.