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btribble t1_jabms9q wrote on February 28, 2023 at 6:50 AM

Reply to comment by ishitintheurinal in Fixing wall water ingress / what is that white stuff falling from the wall? by enava

But before that, figure out where the moisture is coming from and fix it. This looks like an upstairs wall, so I would assume it's coming from the roof. If those are stairs down to a basement the moisture could be wicking up the wall from somewhere.