hi guysi have recently figured out that my bathroom extractor fan is not working very well. the bedroom above the bathroom now has bubbling on the wall, and i figure that recent hot showers are the culprit.pics of wall in room above bathroom: https://ift.tt/2WxgCkd am a diy noobie but i am hoping this is something i can do myself. i gather it might involve stripping the wall, or sanding the wall, and then repainting, possibly with anti-damp paint. i have done some searching on the internet but would love some clarification from a human! please ELI5 as much as possible :)thankyou via /r/DIY https://ift.tt/2OzfJFd
