随着建材工业科学技术的发展,防水新材料日新月异。但是传统的卷材屋面在防水设计中仍占有很大的比例,只不过由二毡三油变为三毡四油,设计的可靠性明显加强。按说防水效果应该令人满意了,可事实上并非如此,卷材屋面漏水渗水现象随处可见。屋面漏水渗水几乎成了近几 With the development of science and technology of building materials industry, waterproof new materials are changing with each passing day. However, the traditional roll roof still occupies a large proportion in the waterproof design, but it is changed from two felt three oils to three felt four oils, and the reliability of the design is obviously strengthened. It should be said that the waterproof effect should be satisfactory, but in fact it is not the case. The seepage of water in the membrane roof can be seen everywhere. The leakage of water in the roof has almost become a few