卷料防水屋面工程质量,使用年限短。其原因是多方面的。从屋面构造分析,三毡四油防水层直接与大气相接触,温差应力太大,太阳光紫外线对沥青材料的老化作用,促使卷材防水层早期破坏。根据国内,外防水工程专家们的建议,“倒铺式卷材屋面”是较为理想的构造形 Roll waterproof roof project quality, short service life. There are many reasons for this. From the analysis of the roof structure, the three-felt and four-oil waterproof layer is in direct contact with the atmosphere, and the temperature difference stress is too large. The aging effect of solar ultraviolet rays on the asphalt material promotes the early destruction of the coil waterproof layer. According to recommendations of domestic and foreign waterproof engineering experts, “down-rolled coil roofing” is an ideal structural shape.