Old stain or active leak? Proving a ceiling mark is history

Every property has a ceiling stain with a story: the leak above was fixed two years ago, but the stain still reads as a question to an inspector standing under it. The difference between an old stain and an active problem is evidence. A moisture-meter reading at the stain, logged with a date, plus the work order from the original repair, turns an argument into a file. The field habit: when a leak repair finishes, photograph the repaired source, meter the ceiling below once it is dry, and keep both with the work order — then repaint, so the next walk is not re-litigating a closed job. How does your team mark a stain as closed? — Otto Mergl, Admin