First steps
Shut off the water
If plumbing is the likely source, close the main shutoff right away.
Cut power to the area
Switch off the breaker that serves the wet ceiling if you can reach the panel safely.
Catch the water
Put down buckets and towels and move furniture and electronics out of the way.
Deal with a sagging bulge
A bulging ceiling is holding water. Standing clear and to the side, a small hole made with a screwdriver at the lowest point can let it drain into a bucket in a controlled way rather than letting the panel collapse.
Document it
Photograph the ceiling, the stain and the room before cleanup.
Finding the likely source
| What is above | Possible source | Clue |
|---|---|---|
| Upstairs bathroom | Toilet seal, shower pan, tub drain, supply line | Leak worse after the fixture is used |
| Attic with water heater or lines | Water heater, supply pipe | Constant drip whether or not water is used |
| Attic with air conditioning | Condensate line or drain pan | Only drips when the AC runs |
| Roof | Roof leak | Only during or after rain |
| Neighbor's unit | Their plumbing or appliance | Condo or townhouse; tell the HOA and neighbor |
Narrowing it down
Main off: does it stop?
If the drip stops within a short time after closing the main, a pressurized supply line is likely. If it continues, it may be draining water or a drain line.
Run one fixture at a time
With the main back on, use each upstairs fixture separately while someone watches the ceiling.
Check the attic carefully
Step only on framing, not on the drywall between joists, and use a flashlight to look for wet insulation.
After the plumbing is fixed
Wet drywall and insulation need to dry fully or be replaced, or mold can follow. A plumber fixes the pipe, but drying and drywall repair are often handled by a separate water damage or drywall contractor.
Do not close up the ceiling until the area is completely dry. Moisture meters are the reliable way to confirm it, which is one reason a drying specialist can be worth involving.
Questions to ask
- Was the source a supply line, a drain or a fixture seal?
- Is anything else in that wall or ceiling showing wear?
- Who will open and repair the ceiling?
- Will you leave the access open until it dries?
Common questions
Should I poke a hole in a bulging ceiling?
Releasing trapped water in a controlled way can prevent a sudden collapse, but stay to the side and keep clear of wiring and fixtures. If in doubt, keep everyone out of the room.
The leak only happens when we shower. Is it urgent?
Stop using that shower until it is checked. It is less urgent than a constant leak but still causes hidden damage.
Who pays when the leak comes from a neighbor's condo?
That depends on your HOA rules and insurance. Notify the HOA and your insurer promptly.
General information for Anaheim, not a quote or professional advice. In an emergency, call 911.