硬泡聚氨酯是采用异氰酸酯、多元醇及发泡剂等添加剂,经反应形成的高闭孔率硬质发泡体,具有良好的保温和防水性能。本文结合工程实例,论述屋面采用Ⅲ型硬泡聚氨酯和SBS改性沥青防水卷材构筑复合防水体系设计、施工的主要内容及质量控制措施。 Rigid polyurethane is the use of isocyanate, polyol and foaming agents and other additives, formed by the reaction of high closed cell rigid foam, with good thermal insulation and waterproof properties. This paper discusses the design and construction of the composite waterproofing system with Ⅲ rigid foam polyurethane and SBS modified bitumen waterproofing membrane, and the main contents and quality control measures of the roof.