Burst Pipe: Exactly What to Do in the First 5 Minutes

A burst pipe is one of the few plumbing problems where the first five minutes genuinely change the outcome. A half-inch supply line pushes a startling amount of water into a house. The difference between a wet closet and a gutted ceiling is usually just how fast somebody found the shutoff.

So here is the order. Read it now, before you need it, and go find your shutoff while you are calm.

Step 1: Shut off the water at the main

Do not go looking for the leak first. Kill the water, then investigate. Everything else is easier once the supply stops.

In most Rockwall County homes the main shutoff is in one of two places. Inside, look on the wall where the water line enters the house, often in the garage, a utility closet, or near the water heater. Outside, look for the meter box near the curb — a rectangular plastic or concrete lid, usually flush with the ground. Inside the box is a valve on the house side of the meter.

Ball valves turn a quarter turn: handle parallel to the pipe is open, perpendicular is closed. Older gate valves are a round wheel that takes several full turns clockwise. Turn until it stops, then leave it. Forcing an old gate valve past its stop is how you snap the stem and turn one problem into two.

If you cannot get the meter valve to move, a curb key from any hardware store fits it. Keep one in the garage. On a night when the neighborhood is freezing, that ten-dollar tool is worth more than anything else you own.

Step 2: Deal with electricity before you wade in

Water and live circuits do not mix, and burst pipes love to find their way into ceilings above light fixtures and down inside walls where outlets live.

If water is running through a ceiling, near a panel, or pooling anywhere close to outlets or appliances, shut off the affected circuits at the breaker panel. If the panel itself is wet, or you would have to stand in water to reach it, do not touch it. Leave the house and call an electrician and us from outside.

Step 3: Drain the pressure out of the system

Closing the main does not empty the pipes. There is still water sitting in the lines above the break, and it will keep draining out of the hole until it runs dry.

Open the lowest cold water faucet in the house — usually a tub spout or a laundry sink on the ground floor — and let it run. Then open a faucet upstairs to break the vacuum. That pulls the standing water down and out through the drain instead of through your drywall.

If the break is on the hot side, turn the water heater off too. Gas units have a control dial you can turn to the pilot or off position. Electric units get shut off at the breaker. A tank that keeps firing with no incoming water is a good way to ruin the heater on top of everything else.

Step 4: Get water out and air moving

Water damage is mostly a time problem. Drywall and framing that dry out in a day usually recover. Left wet for three days in a closed-up North Texas house in July, you are dealing with mold.

1. Move furniture, rugs, and anything with feet off the wet floor before it wicks.
2. Pull up standing water with a wet vac, towels, or a mop — whatever you have, right now beats the perfect tool later.
3. Open interior doors and closet doors so air can circulate.
4. Set up fans pointed at wet baseboards and walls, not just the floor.
5. Run the AC. Cooling dehumidifies, and in a Texas summer that does real work.
6. Photograph everything — wet floors, ceilings, damaged belongings — before you clean it up. Your insurance carrier will want that.

If a ceiling is sagging and holding water, do not stand under it. A trapped bubble of water in drywall weighs more than people expect. From the side, poke a small hole at the lowest point with a screwdriver and let it drain into a bucket. A controlled hole is far cheaper than the whole ceiling letting go at once.

Step 5: Call, and know what to tell us

When you call (469) 338-5533, the more of this you can answer, the faster the tech shows up with the right parts on the truck.

• Is the main shut off, or do you need help finding it?
• Where is the water coming from — ceiling, wall, under the slab, outside?
• Is it hot or cold side, if you can tell?
• What is the pipe made of — copper, PEX, CPVC, galvanized?
• How old is the house, roughly?
• Is the water still running after the main was closed?

That last one matters more than it sounds. If water keeps coming after the main is off, the break is often on the irrigation system or on a line fed ahead of the shutoff, and that changes what we bring.

Why pipes burst around here

Freezes get the blame, and during a hard freeze they earn it. Water expands as it turns to ice and the pressure builds between the ice plug and a closed faucet until something splits. Hose bibbs, garage walls, attic runs and anything on an exterior wall go first, because that is where the insulation stops.

But we pull plenty of failed pipe in July too. Hard North Texas water is rough on plumbing over time. Mineral content plus high pressure works on copper from the inside, and pinhole leaks turn into real breaks. Older galvanized lines corrode closed, pressure spikes behind the restriction, and a joint gives. If your static pressure is running high because a pressure regulator has quietly failed, every fixture and every joint in the house is living under stress it was never sized for.

That is worth checking whether or not you have had a break yet. A pressure gauge on a hose bibb takes two minutes and tells you a lot.

What a proper repair looks like

A burst pipe repair has two halves: stop the leak, and figure out why it happened. A tech who does only the first half will be back.

For a single freeze break on an otherwise healthy line, cutting out the damaged section and splicing in new pipe is a straightforward repair, and cost mostly comes down to access. A break in an exposed garage wall is a different job from one behind finished drywall in a two-story, and one under the slab is different again. Anyone quoting a repipe over the phone before they have seen the line and checked your pressure is guessing.

What we do is find the break, check your static pressure and your regulator, and look at the condition of the surrounding pipe. If we cut into a copper line and the wall thickness is gone, we will tell you straight that patching one spot is buying a few months. If the pipe is sound and this was a one-off freeze split, we will say that too and fix the one spot.

Before the next freeze

• Find your main shutoff today and make sure it actually turns. Old valves seize.
• Buy a curb key and keep it somewhere you can find in the dark.
• Insulate hose bibbs and any exposed pipe in the garage or attic.
• Disconnect garden hoses before a freeze — a connected hose traps water at the bibb.
• Open cabinet doors under sinks on exterior walls so warm air reaches the pipes.
• Know where your water heater shutoff and gas control are.

We are family-owned and based right here in Rockwall, licensed as a Texas Master Plumber, TXM11693. When a pipe lets go at two in the morning, you get a real technician on the phone, not a call center. Call (469) 338-5533 any hour.