旧房翻新墙面返潮发霉怎么处理再刷漆

旧房翻新墙面返潮发霉,不能直接刮掉刷漆。表面弄干净只能好看一阵子,水汽来源不处理,几个月后还会回来。我做过一个地下室墙面,前一手只是铲霉、批灰、刷防霉漆,客户搬进去没多久角落又黑了,后来才查到外墙排水和室内通风都有问题。 我处理这类墙面会先分清是渗水、冷凝还是室内湿度高。靠外墙的位置要看 gutter、地面坡度、窗井、防水层;室内要看排风、空调回风和家具是否贴墙太死。基层含水率没下来之前,不要急着批腻子。必要时用 moisture meter 多测几个点,别只看表面干了就开工。 真正施工时,发霉区域要清理到稳定基层,松散层去掉,必要时做封闭底漆或防潮处理。面漆只是最后一道,前面水源、通风、基层没处理好,再贵的漆也扛不住。

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