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本页汇总厂房漏水最常被问到的 14 个问题,每题给出判断依据与处理方式;需要现场确认时可直接拨打 020-66666666(24小时,广州11区免费上门检测,先报价后施工)。
螺钉钉眼、板与板搭接缝、屋脊与天沟收口。另有隐蔽源头:檩条锈蚀导致固定点松动,渗漏点随之下移。
雨后观察渗水起点:点状渗漏多为钉眼,沿板缝成条状多为搭接失效。屋脊附近成片渗漏,要查收口泛水与排水坡度。
局部点补与搭接修复可分区施工,不影响生产;整体翻新需配合停产或错峰。报价时把停工配合要求写清,避免后期争议。
除锈除尘、更换失效胶垫与螺钉、钉眼与搭接缝做专用密封、屋脊天沟加强、整体耐候涂层。除锈不到位,涂层必然脱层。
彩钢瓦选弹性金属漆或耐候丙烯酸体系,混凝土屋面选耐候卷材。工业酸碱环境下避免使用普通家装涂料,一两年就会失效。
点补按点计、整体翻新按平方米计,高空作业费与停产配合单列。屋面坡度大、需搭设脚手架或吊篮的,费用另计。
点补1至2天;1000平方米以内整体翻新3至5天,含除锈与两遍涂层。雨季要预留固化窗口,强行赶工是最常见的质量隐患。
淋水试验30分钟以上、钉眼与搭接无渗、涂层厚度抽检、留存施工前后对比照片。四项齐全再签验收单。
质保以合同约定(注浆类与卷材类分别约定)。金属屋面翻新按涂层体系与施工遍数约定年限,并写明不保情形:化学腐蚀、外力碰撞、私自搭接。
先由第三方检测区分屋面老化与结构缺陷。施工方对施工范围负责,原设计与原施工缺陷由产权方或建设单位承担。
板材完好、渗漏点少于总数的10%、檩条无锈蚀松动,可先点补观察一个雨季,再决定是否整体翻新。
螺钉松紧与胶垫老化、天沟落叶与落水口通畅、屋脊压顶、卷帘门与设备洞口收口、排水泵运行状态。五项按序检查一次,能挡住大部分暴雨渗漏。
除锈不彻底、潮气未散就刷涂、钉眼只封不换胶垫、把家装涂料用上金属屋面。四项都是工艺问题,不是材料问题。
厂房面积大、坡度长、金属基材多,必须考虑热胀冷缩与化学腐蚀;民宅以混凝土与瓷砖为主,重点是节点与闭水。做法不能互相套用。
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