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平顶屋盖,一般由结构层、找平层、蒸汽隔绝层、保温层、防水层、保护层等组成。防水层覆盖保护着其它结构层次,如果防水层渗漏,雨水就会浸透到保温层中,直接影响保温效果。在我们北方,屋盖雨季渗漏滴水,冬季室内顶棚结露,不仅降低了使用效能,而且会使屋面结构遭致破坏,影响建筑物的耐久性,因此,防水功能是主要的。
The flat roof is generally composed of a structural layer, a screed, a steam insulation layer, a thermal insulation layer, a waterproof layer, a protective layer, and the like. The waterproof layer covers the other structural layers. If the waterproof layer leaks, the rainwater will soak into the insulation layer, directly affecting the insulation effect. In northern China, leaking water in the roof during the rainy season and condensation in the indoor roof in winter not only reduce the use efficiency, but also cause damage to the roof structure and affect the durability of the building. Therefore, the waterproof function is the main one.