现象天沟、雨水口、烟囱根部等泛水构造渗水、漏水等。原因分析 1.天沟排水坡度不够或反坡,在雨水口周围存水。2.天沟油毡粘贴不严造成渗漏水。3.雨水口固定不牢。4.油毡没铺至雨水口内或虽深入口内但没粘牢、粘严。5.烟 Phenomenon Gutters, rainwater outlets, chimney roots, and other flooding structures seep and leak. Analysis of reasons 1. Gutter drainage slope is not enough or back slope, in the water around the gutter. 2. The gutter linoleum lax results in leakage of water. 3 rain mouth is not fixed. 4. The linoleum was not laid in the mouth of the rainwater or deep in the entrance but it was not sticky and sticky. 5. Smoke