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本页汇总屋顶漏水最常被问到的 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)。
卷材老化开裂、搭接边脱胶、落水口堵塞长期积水、出屋面构件收口不严。老屋面还有原防水层空鼓、保温层含水饱和的问题。
保温层含水未排出,水在层间窜流,表面补漏只是遮住了出口。必须切开排湿、干燥后再做防水,否则一个雨季就会复发。
分段淋水或蓄水观察、红外热成像扫含水区、检查落水口与天沟排水坡度。屋面渗漏常沿保温层横向窜流,室内渗点与真实漏点错位。
大面积规则屋面优先耐候卷材,厚度均匀、效率高;节点多、造型复杂的用涂料加胎体增强更贴合。长期外露暴晒必须选耐候型。
铲除旧层至基层、修补找坡(不低于2%)、做节点附加层、铺贴或涂刷防水、闭水24至48小时、做保护层。
按展开面积还是投影面积差别很大,签约前必须问清。旧层铲除、垃圾清运、高空作业费要单列。参考价80至150元每平方米。
局部点补1至2天;整体重做3至7天,含铲除与闭水。雨季要预留干燥窗口,赶工是最常见的返工原因。
蓄水或淋水24小时、落水口排水通畅、保护层无空鼓、连续观察7至15天无新渗痕。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)。外露卷材按耐候年限约定,需写明不保情形与复漏响应时限。
屋面属共有部分,由物业组织维修,可申请住宅专项维修资金;自建房由产权人负责。先出检测报告固定证据。
卷材整体完好、渗漏点少于三处、无大面积空鼓的,可点补加附加层;多点渗漏或卷材普遍老化时,点补只能拖延。
天沟与落水口、女儿墙与出屋面管根收口、卷材搭接边、排气孔与设备基座、屋面排水坡度。五项逐一过一遍。
在旧防水层上叠加新层、节点未做附加层、保护层施工破坏防水、保温层含水未排。
屋面长期日晒雨淋,需耐候体系并做保护层;露台常涉及种植与人员活动,还要阻根层与耐磨面层。
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