Key facts: First hour after a two-story leak
Short answer
What matters most when water is coming through a ceiling
Make yourself safe from electricity and failing ceilings, close the main water valve, open a low faucet to drain what is left in the upstairs lines, cut power to wet areas if you can do it from dry ground, photograph everything, then call for help. Almost everything else can wait a few minutes. People often run for towels first, and while that feels useful, every minute spent mopping is a minute the water keeps flowing.
The reason a low faucet matters is simple physics. After you close the main, the pipes in the upper part of the house still hold water. If there is a break upstairs, that water keeps leaving through it. Opening a downstairs faucet or an outdoor spigot gives it an easier way out.
At a glance
What you see, what it probably means and what to do
| What you see | Likely cause | What to do |
|---|---|---|
| Drip through a light fixture | Water following wiring or a ceiling cavity | Turn off that circuit at the breaker, do not touch the fixture |
| Ceiling bulge | Water sitting on drywall | Stay out of the room, keep others away |
| Wet carpet by an upstairs bathroom | Toilet, supply line or shower | Close the fixture stop and then the main if needed |
| Water from laundry room door | Washer hose or standpipe overflow | Close the washer valves, turn off the washer |
| Stain under the AC closet or attic | Condensate overflow | Turn off the AC at the thermostat |
| Water from a drain or toilet | Blockage, contaminated water | Stop water use across the whole house |
Minute by minute
A sensible order for the first hour
- 1
Minute one: stay safe
Do not walk through water that could reach outlets. Stay out from under any sagging ceiling. If you smell gas, leave and call from outside.
- 2
Minute two: close the main
In many homes the valve is in the garage, near the water heater or in a utility closet. If you cannot find it, use the meter box at the street if you can do so safely.
- 3
Minute three: drain the lines
Open a low faucet or outdoor spigot. Flush nothing upstairs.
- 4
Minute five: deal with power
Flip breakers for wet rooms only if the panel area is dry. If you are unsure, leave it for an electrician.
- 5
Minute ten: photos and video
Walk through wide shots then close-ups, including the source, ceilings, floors and belongings.
- 6
Minute fifteen: move what you can
Electronics, papers, rugs and small furniture go to a dry room. Put foil or blocks under the legs of bigger items.
- 7
Minute twenty: start the calls
A plumber for the source and a restoration contractor for the water; some firms handle both. Then your insurer.
- 8
The rest of the hour
Mop clean water on hard floors, keep the AC or heat running if it is safe and write down the time everything occurred.
Ceilings
Why sagging drywall deserves real respect
Ceiling drywall holds surprisingly little weight when wet, and water pooling above it plus soaked insulation can bring it down in one piece. A bulge means water is sitting there. Keep people and pets out, and move furniture only if you do not have to stand under it. Professionals often puncture a bulge deliberately to release water into a container in a controlled way, but this should only be attempted with the power off and from a safe position to the side. If in doubt, leave it alone.
Also, remember that the place where a drip appears can be well away from the source. Water follows joists, pipes and seams, then drops at a low point. A drip in the kitchen could come from a bathroom two rooms away.
Upstairs sources
The usual suspects on a second floor
Washer hoses, toilet supply connectors, sink supply lines, shower pans and refrigerator or ice-maker lines are common culprits, and an air handler in the attic is another. When you know the fixture, its own stop valve may be enough to halt it and you can restore water to the rest of the house. If you cannot identify it, keep the main closed until a plumber arrives. Laundry rooms are worth checking early because a failed hose can release a great deal of water while nobody is home.
Do not
Things that make the first hour worse
- Using a household vacuum on water
- Plugging fans into damp outlets
- Walking on a wet stair carpet in socks while carrying things
- Throwing away damaged items before the adjuster has seen them
- Making permanent repairs before the insurer has inspected
- Turning the water back on to see if the leak has stopped, without someone at the source
Who to call
A plumber, a restoration contractor or both?
A plumber stops and repairs the source. A restoration contractor removes the water, opens what needs opening and dries the house. On a small leak that was caught quickly you may need only the plumber and some towels. Once a ceiling, a wall cavity or carpet pad has become wet, restoration is usually worth at least a conversation, since hidden moisture is what causes trouble later. Extraction and drying explains what happens next.
Call your insurer early as well. The Texas Department of Insurance says to tell your company as soon as possible, and it notes hidden water damage usually must be reported within days after you first see it [2].
When you call
What to tell the person on the phone
- The number of stories, and which floor the water started on
- What you think the source is, and if it has stopped
- When you first noticed and when it may have begun
- Which rooms and materials are wet (carpet, wood, ceiling)
- Whether the water came from a clean line or a drain
- Whether anyone in the house has health concerns
Preparing
Five minutes of preparation you can do today
Find the main valve, label it and make sure it turns. Show everyone in the household, including older kids. Keep a flashlight near it. Look at the washer valves and know which way they close. Learn which breakers serve the upstairs. If you travel, consider closing washer valves before you leave, and think about adding leak sensors in the laundry room and near the water heater.
Questions
First-hour questions in two-story houses
Should I turn off the electricity for the whole house?
Only if you can reach the panel safely on dry ground. Turning off circuits for wet rooms is usually enough. If water is near the panel, stay away and call an electrician.
How do I stop water upstairs if I cannot find the main?
Try the fixture's own stop valve first. If that fails, try the valve at the water heater for hot water, then the meter box at the street if safe. Call a plumber in the meantime.
Do I need to leave the house?
Usually not for a contained clean-water leak, but leave if you smell gas, see a failing ceiling or have water near electrical gear. Sewage or major damage may also call for staying elsewhere.
Should I poke a hole in a bulging ceiling?
Only from a safe spot with the circuit off, and only if you are comfortable doing it. Otherwise keep everyone out of the room and leave it to a professional who has the right equipment.
How fast does mold start?
The EPA advises drying materials within 24 to 48 hours to help prevent growth. [1] That does not mean growth appears right on schedule, but it is a good reason to start immediately.
Can I use towels instead of calling anyone?
For a small, recent spill on a hard floor, yes. If water reached a wall, ceiling or carpet pad, towels will not touch the moisture you cannot see, so a moisture check is worthwhile.