Plumbing guide · Klamath Falls, OR
What to Do When a Pipe Bursts
Close the main valve, stay clear of electricity and call for help. Here is what to do when a pipe bursts, in the order that limits the damage.
Emergency? Call now, 24/7(541) 407-8900- Stop the waterClose the main shut-off valve.
- Make it safeKeep away from wet power sources.
- Call for repairA person answers 24/7.
The short version of what to do
- Shut off the main valve immediatelyEverything else is easier once the water stops.
- Avoid electrical hazardsDo not touch wet outlets, wet ceilings with lights or the panel standing in water.
- Drain the lines and turn off the water heaterOpen a low tap, flush toilets, stop the heater.
- Photograph the damage firstPhotos help with any claim and with the plumber’s plan.
- Call a plumber the same dayWet drywall and wood start to deteriorate in a day or two.
What to do when a pipe bursts: the first ten minutes
A burst line can put a lot of water into a house in a short time. The order of your actions matters more than speed alone.
Five moves, in this order
Your first job is to stop the flow. Go to the main shut-off valve and turn it all the way closed. In most homes it sits where the supply line enters the house, in a basement, a crawl space, a garage wall or a utility closet. If you have never located it, how to shut off main water valve shows what the common types look like.
Second, deal with electricity. Water and power do not mix. If water is dripping through a light fixture, pooling around outlets or reaching the panel, stay out of the area. Turn the breaker off only if you can reach the panel on dry ground. Otherwise leave and call for help.
Third, open the lowest cold tap in the house and flush a toilet or two to drain what is left in the lines. Fourth, shut off the water heater so that it does not run dry and overheat. Fifth, photograph everything before you move a single item. Then call a plumber.
Close the main valve
Clockwise for a gate valve, quarter turn for a ball valve.
Make the area safe
Stay clear of wet outlets, ceiling lights and the panel.
Drain the lines
Open a low tap and flush toilets to relieve pressure.
Turn off the heater
Gas control to pilot or off, electric breaker off.
Record and call
Photos first, then one call for the repair.
Why pipes burst, and what that tells you about the repair
The cause shapes the fix. A pipe that froze fails differently from one that wore out.
| Cause | How the pipe fails | What it means for the repair |
|---|---|---|
| Freezing | Ice expands inside the pipe and splits the wall, often along a seam | The split is a clue that nearby lines may be damaged too |
| Corrosion and age | Metal thins until a pinhole or a rupture opens | More weak spots may follow, so ask about a wider repair |
| High water pressure | Fittings and fixtures are stressed beyond design | A pressure regulator may need a check |
| Water hammer | Sudden valve closure sends a shock wave through the line | Loose pipes and failing arrestors need attention |
| Ground movement or digging | Buried line is cracked or pulled from a coupling | Outdoor line work with excavation |
| Failed fitting or clamp | Joint lets go while the pipe stays intact | Often a faster repair than a full line |
In the Klamath Basin, hard freezes are the main seasonal cause. Lines in crawl spaces, garages, unheated additions and manufactured homes are the usual victims. The pipe often freezes on a cold night but only starts spraying as the ice melts. If you see a split on a thawed pipe, you can read how to prevent frozen pipes after the emergency is under control.
What to do when a pipe bursts and you are waiting for help
The minutes after the valve is closed are your chance to limit the damage. Do the following while you wait.
- Move valuables and electronicsLift anything off the floor and out of the wet zone. Pull rugs. Furniture legs on a wet floor can leave stains, so slide a plastic bag or foil under them.
- Remove standing waterUse towels, a mop, a wet vacuum or buckets. Shallow water comes up fast. Deep water near outlets is a job for a trained crew, not you.
- Open cabinet doorsLift toe-kicks and open vanity doors so that air reaches the wet wall cavity.
- Run fans and a dehumidifierAirflow slows swelling and mold. Use a heater only if the room is safe and dry underfoot.
- Check the ceiling belowA bulging, sagging or dripping ceiling holds water. Poke a small hole at the lowest spot over a bucket to let it drain.
- Protect the drainsDo not run the dishwasher, washer or shower while the line is open, since that adds water to a wet house.
- Take pictures and short videosWide shots and close-ups of the pipe, the water line on the wall and every damaged item. Date the folder on your phone.
Do not wait for an insurance reply before stopping the water or drying the area. Prompt steps to limit damage are sensible, and does insurance cover plumbing leaks and burst pipes has the general information on the claim process. Read your own policy and call your insurer for what applies to you.
Temporary fixes people use, and where they stop being safe
Plenty of homeowners reach for a quick patch. Some are fine for a night. Others cause trouble.
Clamps, tape and fittings
A rubber patch and a hose clamp can slow a small split on an exposed straight run. Self-fusing silicone tape wrapped tightly over a clean, dry pipe works as a stopgap on a low-pressure leak. Push-fit couplings let a handy homeowner replace a short section of copper or plastic when the cut ends are clean.
Where these stop being a good idea: anything near the main line, any pipe under the slab or inside a wall, any joint that is corroded, and any section that has been frozen over a long run. A patch can hold for an hour and fail while you sleep. If the main valve is closed and the house can wait, leave the line dry until a plumber arrives.
| Situation | Reasonable stopgap? | Better path |
|---|---|---|
| Pinhole on an exposed copper run | Yes, a clamp for a short time | Replace the section |
| Split along a frozen pipe | Rarely, damage often runs far | Cut out and replace the run |
| Burst at a fitting | Sometimes tighten or replace the fitting | Redo the joint |
| Leak in a wall or under the floor | No | Water off, call for repair |
| Main supply line outside | No | Water off at the curb valve or main, then call |
A tight stopgap is fine for a night. For a lasting job, see burst pipe repair and pipe repair, which cover how sections are cut out and rejoined.
The cleanup and the days that follow a burst pipe
Even when the pipe is fixed, the house is still wet. A few steps in the next days decide whether you end up with a clean recovery or a mold problem.
Dry for several days
Run fans and a dehumidifier until wood, drywall and carpet pad read dry. A moisture meter helps. Surface dry does not mean wall dry.
Watch for the smell
A musty odor after the repair signals that moisture is still hiding in a cavity or under flooring.
Check the other lines
Freeze damage is rarely limited to one spot. Ask the plumber to look at neighboring pipes and fittings.
Test the system
Open the main slowly, run every fixture and check the meter with water off. Our guide on how to find a water leak in your house walks through that test.
Look at the weak points
Insulation, heat tape, a faulty regulator or an exposed hose bib may have caused the failure. Fix the cause, not only the break.
Burst pipes that need a wider fix
Sometimes one rupture is a symptom. These patterns suggest a larger repair.
Signs the whole line is tired
If several pinholes appear within a year, or the pipe walls look thin and rough where you cut, the metal is wearing out as a whole. Patching each hole is a cycle of short repairs and repeat damage. At that point it is worth asking about replacing a run or the whole system. See repiping and the guide on signs of corroded pipes to compare.
Burst pipes inside a manufactured home, a rental unit or a seasonal cabin often involve long exposed runs under the floor. In those, ask about insulation and heat protection when the repair is done, so the same spot does not freeze again the following winter.
- More than one leak in a yearA pattern of failures points to a tired line.
- Green crust or rust at fittingsThe metal is reacting and may fail near by.
- Brown water after a repairInterior scale or rust is being disturbed.
- Frequent water hammerFittings and pipe straps loosen over time.
- Pressure swings across fixturesA regulator or a failing section may be involved.
Get ready now so a burst is a short emergency
Ten minutes of preparation turns a scramble into a routine. Do these things on a calm afternoon.
A household plan
Walk every adult and older child in the house to the main shut-off valve and let each of them turn it once. A valve that has not moved in years can seize, so exercise it gently and replace it if it will not budge. A tag on the handle with the open and closed directions removes guesswork when someone is stressed.
Keep a small kit where you can reach it: a flashlight, a roll of towels, a bucket, rubber gloves, a clamp and a roll of self-fusing tape, plus the phone number you will call. Store the number in your phone as well as on paper. Know where the breaker panel is, and keep a clear path to it.
- Valve exercised and labeledEvery adult has turned it once.
- Water heater shut-off knownGas control or breaker located.
- Outdoor bibs drained before cold weatherHoses off, lines open, covers on.
- Exposed pipes insulatedCrawl space, garage, outside walls.
- Vacation plan setWater off and heat on low when you travel.
- Photo inventory of belongingsHelpful for any later claim.
If you travel in winter, a shut-off at the main and a low heat setting protect an empty house. The step-by-step version is in how to prevent frozen pipes.
When to call right now
A burst pipe is an urgent call, but some situations are more pressing than others.
Water is still flowing after you closed the main
The main valve may be failing. Call at once.
Water has reached outlets, lights or the panel
Leave the area and call. Do not touch electrical gear.
The ceiling below is bulging
Trapped water is heavy and can fall. Keep clear.
Pipe burst in the middle of the night
We are open 24/7 with same-day service available.
Services for a burst or damaged line
After the emergency, these services handle the repair.
Questions about what to do when a pipe bursts
What to do when a pipe bursts in the middle of the night?
Where is the main water shut-off valve?
What if the main valve will not close?
Can I use tape to fix a burst pipe myself?
How fast does water damage start?
Is a burst pipe covered by homeowners insurance?
What affects the price of a burst pipe repair?
What to do when a pipe bursts outside the house?
Why did my pipe burst after it warmed up?
Do I need to replace all my pipes after one burst?
Guides to read after the emergency
A pipe just burst? Call now
Open 24/7. One call, no forms, and a person answers. Same-day service is available.