First 10 minutes: stop the water, kill the risk
- Find your main water shut-off valve. Usually in the basement, garage, or crawl space where the water line enters — or outside near the street in warm states. Turn it clockwise until it stops.
- If water is anywhere near lights or outlets, switch off the breaker for that area. Water + live wiring is the one way a leak becomes a 911 call.
- Bulging ceiling? Bucket underneath, small screwdriver hole at the center of the bulge. Controlled drip beats sudden collapse.
- Photograph everything — ceiling, source if visible, damaged belongings. Your insurance claim starts with these photos, not with the repair.
Plumber, roofer, or HVAC? Answer by timing first
This is the question people get stuck on, and the fastest way through it is not the stain — it’s when the stain appears. Geography narrows it afterwards, but timing is what names the trade.
It appears or worsens when it rains, and stays quiet in dry weather → roofer. Most “mystery” roof leaks turn out to be failed flashing rather than shingles — the parts glossary shows where that sits and what to call it on the phone, and if the stain is near the chimney, the flashing there fails first. This holds even when the stain sits directly below a bathroom; that room is a coincidence, and the real path is the roof or a vent stack flashing.
It appears when the air conditioning runs, or only in cooling season → HVAC technician. Air handlers produce condensate, and a blocked condensate drain line is one of the most common summer ceiling stains. Dry all winter is the tell.
Neither — it tracks water use in the house → plumber. The stain appears or worsens right after someone showers, runs a wash, or flushes. A supply line, a drain, or a failed toilet seal.
Then use what’s directly above the stain to sharpen the call:
A bathroom, kitchen, or laundry room is above it → plumber, and name the room when you phone.
A bedroom or hallway with nothing wet above it → still a plumber, but tell them it’s a concealed pipe run inside the ceiling so they bring a moisture meter.
The attic or roof is directly above → roofer, and this is the first thing to check after a storm.
An HVAC unit, air handler, or ductwork is above or nearby → HVAC technician, condensate line first.
Ring-shaped brown stain, dry to the touch, not growing → an old leak that was already fixed. Worth confirming with a moisture meter before you pay anyone to open the ceiling.
Where timing and geography disagree, timing wins.
Plumber or restoration company? The distinction that saves you money
This is the call most people get wrong. A plumber fixes the source. A restoration company fixes the damage. They are different trades with different equipment:
- Water still coming through → the source is alive → plumber first. Nothing a restoration crew does matters while the pipe still leaks.
- Water stopped (or it was a one-time event like an overflowed tub) → restoration company. They bring moisture meters, industrial dehumidifiers, and air movers; their job is making sure your ceiling cavity doesn’t quietly grow mold for the next month.
If the leak source is the roof rather than plumbing — stains appear after rain, not after water use — you need a roofer, and a tarp before the next storm.
Once more than one trade is involved, the order matters more than the choice. Who does what, and who pays whom maps the full sequence: plumber for the source, mitigation for the drying, restoration for the rebuild, insurer for some of the bill.
If you rent
Call the landlord’s emergency maintenance line before anyone else (after stopping what water you can). Building plumbing is their cost and their contractor choice. Two rules protect you: report it in writing (text or email, timestamped), and photograph your damaged belongings — the landlord’s policy covers the building, but only a renters policy covers your things. If the repair never happens, the escalation ladder runs from written notice to code enforcement.
The insurance call
Call your insurer’s claims line before authorizing repairs beyond emergency mitigation. Insurers can refuse costs they didn’t approve. What’s usually covered: sudden pipe bursts, appliance failures, and the resulting damage. What’s usually not: gradual leaks (“wear and tear”), and outside floodwater — that’s separate flood insurance. Say the words “sudden and accidental” if they apply; that’s the policy language that matters.
Two things worth knowing before you dial. For smaller losses, filing can cost more than it pays — one water claim raises premiums about 25% and sits in a shared claims database for seven years (the arithmetic). And if a denial arrives citing gradual damage, a leak found after a few days is not the same as one running for weeks — that distinction is often winnable.