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怎么样防止天沟、檐沟渗漏
文章来源:www.larcjc.cn  作者:瑞晨建材  更新时间:2019-04-01 21:09:20  Tag:  浏览:15

 天沟、檐沟是雨水最后流经的部位,被水流频繁冲刷,容易积水,而且天沟、檐沟的结构较薄,变形较大,阴阳角多,基面不平整,因此应遵照多道设防、附加增强、节点密封的原则。首先在雨水口、阴阳角、整个沟底、侧部作不同厚度要求的附加增强层。由于天沟、檐沟的基面转角多,宜采用涂膜增强,在屋面与沟交接处宜采取空铺方法,空铺宽度不少于200mm,且涂膜收头应用涂料多遍涂刷或密封材料密封。如天沟、檐沟采用卷材时,宜顺沟铺设,减少搭接缝,提高施工可靠率,并从沟底上翻至沟外檐顶部,卷材收头应用水泥钉固定,并用密封材料封严。如果屋面层为刚性细石混凝土防水层时,在与檐沟、天沟交接处应留凹槽,填嵌密封材料。

 

Tiangou and eaves ditch are the last part of rainwater flow, which are frequently washed by water flow and easy to accumulate water. Moreover, the structure of Tiangou and eaves ditch is thin, the deformation is large, the Yin and Yang angles are many, and the base surface is not even. Therefore, the principles of multi-channel fortification, additional reinforcement and joint sealing should be followed. Firstly, additional reinforcement layers with different thickness requirements are made at rainwater outlet, Yinyang angle, whole ditch bottom and side. Because of the large turning angles of the base of the gutter and eaves, it is advisable to use film to strengthen the roof. The space-laying method should be adopted at the junction of the roof and gutter. The width of the space-laying is not less than 200 mm, and the end of the film should be coated with paint or sealed with sealing materials. For example, when coiled materials are used in Tiangou and eaves ditch, it is advisable to lay along ditches, reduce lap joints, improve construction reliability, and turn over from the bottom of ditches to the top of eaves. The end of coiled materials is fixed with cement nails and sealed with sealing materials. If the roof is a rigid fine stone concrete waterproof layer, the groove should be left at the junction with eaves and gutters, and the sealing material should be filled in.

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