A ceiling stain is only the visible end of a leak. Water collects in insulation and along joists, so the wet area is often larger than the ring on the paint, and a sagging panel can drop without warning. When the water came from above, the roof leak page shows how that source is handled before the ceiling is dried.
Older buildings need a closer look
Piru's historic core has older buildings where leaks above a ceiling can go unnoticed for a long time. No particular material or age is assumed, so the crew relies on readings, not guesses, to decide how much of the ceiling is wet.
Sources behind the stain
The water may come from a roof, a supply pipe, a drain, an air conditioner or an upstairs bathroom. The source is stopped first, since drying a ceiling while water still arrives only repeats the damage. Sagging panels are cut out carefully, and the framing above is checked for stains, soft spots and trapped water before it is closed back up.
