Water stains on my ceiling appeared 3 weeks after a hidden leak
Back in March I noticed a tiny yellow spot on the bathroom ceiling, maybe the size of a quarter. I figured it was just old paint or a smudge, so I ignored it. Three weeks later that spot turned into a brown ring almost two feet wide, and the drywall started sagging. Turned out a pipe joint behind the wall had been dripping slowly for months, and the moisture had been traveling along the joists before it ever showed. Cost me $480 to have a plumber find it and another $220 to patch and repaint the ceiling myself. The lesson is that any stain, no matter how small, means water is doing damage somewhere you can't see. Has anyone else had a slow leak hide like that, and how did you track it down before it got worse?