Water leaking through the ceiling: what to do now
Step by step
- Find out if it is plumbing. Is it raining or melting outside? If not, it is almost certainly a pipe. Close the main water valve and see if the drip slows over the next 10–20 minutes.
- Turn off power to circuits in the wet area if water is near lights, fans or outlets.
- Protect the floor and contents: buckets, towels, plastic sheeting; move furniture and electronics.
- Drain a water bubble only if it is safe (see the answer below). Stand to the side, never directly under it.
- Photograph the ceiling, the stain size and anything damaged before cleanup.
- Check the room above for a toilet base, tub, shower or supply line that is wet, and check the attic if you can do so safely.
- Call a plumber for the source and a drying company for the ceiling cavity. Insulation above a wet ceiling holds water and will not dry on its own.
Our 24/7 local pro line for Boise and the Treasure Valley is opening soon. Until then: stop the water using the steps on this page, then contact a licensed water damage restoration company in your area. Check that they are licensed and insured before work begins.
Common sources in Treasure Valley homes
| Clue | Likely source |
|---|---|
| Below a bathroom, leaks when someone showers or flushes | Shower or tub drain, toilet wax seal, overflow |
| Constant drip, worse with water pressure on | Supply line, fitting, or a pipe in the ceiling or exterior wall |
| Appears after a cold snap, when it warms up | Pipe that froze and split in an attic, exterior wall or unheated space |
| Summer, near the air handler in the attic | Clogged HVAC condensate line or pan |
| During rain or snowmelt, near exterior walls | Roof, flashing, or an ice dam pushing water under shingles |
Water travels along joists and pipes, so the stain is often a few feet away from the actual leak.
Can the ceiling be saved?
- Small stain, firm drywall, clean water, dried within 24–48 hours: often saved, then sealed with a stain-blocking primer and painted.
- Sagging, soft or crumbling drywall: replaced.
- Wet insulation above: usually removed and replaced; it compresses and holds moisture.
- Dirty water (toilet overflow, sewage): affected materials removed. See sewage backup.
The U.S. EPA advises drying wet materials within 24–48 hours to help prevent mold. Ceilings are hard to dry because the cavity above is closed, so professionals often open a small inspection hole or use moisture meters and thermal cameras. Ceiling repair typically costs more per square foot than wall drywall; see water damage restoration cost.
Winter in the Treasure Valley: ice dams and frozen attic pipes
Average overnight lows at the Boise airport are below freezing in December and January. Pipes in attics and exterior walls are vulnerable, and leaks often show up the day it warms up, not the night it freezes. On roofs, heat escaping from the house can melt snow that refreezes at the eaves and forms an ice dam, which can push water under shingles and through the ceiling near exterior walls. See burst and frozen pipes.
Quick answers
Should I poke a hole in a bulging ceiling?
If a section of drywall ceiling is bulging with water and it is safe to stand clear, many restoration pros puncture the lowest point with a screwdriver over a bucket to drain it in a controlled way. Do not do it if the ceiling is sagging badly, near a light fixture, or if you would have to stand under it. Leave the room and call a professional.
Where is the water coming from?
Common sources are a bathroom above (toilet seal, tub or shower drain, supply line), an attic pipe or HVAC condensate line, a frozen pipe in an exterior wall, or the roof, including ice dams in winter. The stain is often not directly under the source because water runs along joists.
Can a wet ceiling be saved?
Drywall that got wet from clean water and is dried quickly can sometimes be saved if it is not sagging. Sagging, crumbling or stained-through drywall, wet insulation above it, or dirty water usually means that section is replaced.
Does insurance cover a ceiling leak?
Sudden plumbing failures are often covered. Roof leaks from wear, long-running slow leaks and lack of maintenance are commonly excluded. Ice dam damage coverage varies by policy.
Related
- Burst or frozen pipe: the first 60 minutes
- Mold after water damage
- Water damage restoration cost (2026)