Water Coming Through the Ceiling: What To Do
Short answer
Shut off the main water supply and cut power to the room. A bulging ceiling is holding water and can collapse — relieve it with a small hole into a bucket if it is safe to do so, then get a professional to find the source.
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Do this now
- Shut off the main water supply to the building.
- Turn off power at the breaker for that room — water travels along wiring and into fixtures.
- Move furniture and electronics out from underneath.
- If the ceiling is sagging, stand to the side and pierce the lowest point with a screwdriver over a bucket to drain it.
- Photograph everything for insurance before cleanup.
Likely causes
- A supply line or drain failure in the floor or unit above
- An overflowing fixture upstairs
- A failed shower pan or tub surround seal
- Roof or window flashing failure during rain (not plumbing)
- An air handler condensate line backup — very common in South Florida
How to tell plumbing from a roof or AC issue
Water that appears only during or after rain usually points to the roof or a window. Water that appears when the air conditioning runs often points to a clogged condensate drain. Water that appears regardless of weather or usage points to a plumbing leak — and continues after you shut the main only if it is already in the structure.
Frequently asked questions
Is a ceiling leak dangerous?
It can be. Saturated drywall gets heavy and can fall, and water near light fixtures and wiring creates shock and fire risk. Cut power to the area and keep people out from underneath.
Can the ceiling be saved?
Small, quickly dried areas often can be. Saturated or sagging drywall is normally removed so the cavity can dry, which also prevents mold in a humid climate.
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