Frozen pipe burst: what to do in the first ten minutes

You have more control in these first minutes than at any other point. Work the list top to bottom.

1. Shut off the main water valve. It is usually where the water line enters the house, often near the front foundation wall. Turning it off stops the water from your side, even while the split pipe drips.
2. Open a faucet. With the main off, opening a tap lets the pressure and leftover water bleed out instead of pushing through the break.
3. Mind the electricity. If water reached outlets, cords, a plugged-in device, or the panel, do not wade in. More on this below.
4. Move what you can. Lift boxes, electronics, and furniture up off the wet floor so the water stops climbing into them.
5. Photograph everything before you clean. Wide shots of the room, then close shots of each wet item.
6. Call a cleanup crew. The water does damage every hour it sits, so this call starts the clock in your favor.

If you only remember one thing, remember step one. Water you have already shut off cannot flood the room any further.

It helps to know what actually broke, because it tells you where to look next time. Water expands as it freezes, and the American Red Cross explains that this expansion puts tremendous pressure on the pipe around it. No pipe is strong enough to win that fight. The ice does not split the pipe by pushing outward at the frozen spot. It builds pressure between the ice and a closed faucet until the weakest section gives.

The pipes that go first are the cold ones: lines against uninsulated exterior walls, and supply pipes in unheated spaces like basements, crawl spaces, garages, and the cabinet runs under sinks on outside walls. The National Weather Service puts it plainly in its extreme-cold safety guidance: pipes may freeze and burst in homes that are poorly insulated or without heat. A lot of the older housing from Tarentum up through the Alle-Kiski Valley fits that description exactly.

We saw a run of these calls after the January 24 and 25, 2026 storm. Pittsburgh media forecast 10 to 14 inches of snow and told everyone to winterize their pipes, and plenty of homes lost that race with the cold. When a whole house drops below freezing, more than one weak line can let go on the same night. That is not bad luck. It is old pipe meeting a hard freeze.

Sometimes you catch it early. A faucet gives only a trickle on a cold morning, which usually means ice in the line, not a break yet. This is your chance to prevent the burst.

The Red Cross thawing steps are simple and safe:

• Keep the faucet open. As the ice melts, running water helps clear the rest of it.
• Apply gentle heat to the frozen section with an electric heating pad, a hair dryer, or a portable space heater kept away from anything that can catch fire. Towels soaked in hot water work too.
• Never use a blowtorch, a kerosene or propane heater, a charcoal stove, or any open flame. That is how a frozen-pipe problem becomes a house fire.
• Check your other faucets. If one pipe froze, others in the same cold run may be frozen too.

If you cannot reach the frozen spot or the water will not come back, stop and call a licensed plumber. Thawing a hidden pipe with the wrong heat source does more harm than good.

This is the step people rush, and it is the one that can hurt you. A burst pipe puts water where electricity lives, and standing water near anything powered is a shock hazard. The CDC's disaster-water safety guidance is direct about it: shut off electrical power to avoid electrocution, never touch a fallen power line, and stay out of standing water that has a live wire in it.

The practical version is short. If water is pooled near outlets, extension cords, a running appliance, or the breaker panel, do not step into it. Cut the power to that part of the house only if you can reach the panel while standing somewhere dry. If you cannot reach it safely, leave it alone and wait for help. Anything that sat in the water stays unplugged and off, even after it looks dry.

If the water touches your skin, wash with soap and clean water. Clean-supply water from a burst pipe is not as dirty as sewage, but a soaked floor picks up whatever was on it, and any cut deserves a real wash.

When water and power are in the same room, that is the moment to hand it off. Call (412) 226-9468 and let a crew take the risk instead of you.

A burst pipe is two problems wearing one coat, and knowing the split saves you a second flood.

A plumber fixes the pipe. If the line is cracked or split, only a plumber makes it whole again, and until it is fixed the leak can come right back. We do not do pipe repair ourselves, and we say so plainly. Our owner also owns 1-Tom-Plumber Pittsburgh, so the repair and the dry-out can run through one contact instead of two companies pointing at each other.

The water is our half. We remove what pooled, pull the moisture out of the framing, subfloor, and wall cavities you cannot see into, and prove the structure is dry with meters instead of a guess. Hiring only the plumber is how a fixed pipe ends up sitting over a wall cavity that quietly grows mold. Both halves have to happen. You can read how our burst-pipe drying process actually works if you want the full step by step.

The honest line is this. A small drip you caught in minutes, on a hard floor, with nothing porous soaked, is a homeowner cleanup. Water that spread across the floor, ran into a finished room, or soaked carpet, drywall, or cabinets is past the DIY point.

Two reasons it crosses that line. First, the mold clock. The EPA is blunt: act quickly, because mold damages what it grows on and the longer it grows the more damage it causes. A basement holds moisture, so hidden materials can start to grow within a day or two while the surface still looks fine.

Second, the tools. A crew brings extraction pumps, real drying equipment, and moisture meters, and dries wet framing down to a target reading. The EPA also says that if you hire a contractor, make sure they have real experience and follow recognized standards like the IICRC guidelines for water and mold cleanup. Every one of our technicians is IICRC certified.

We are that call for the Alle-Kiski Valley: answered any hour, at your door in 2 hours or less, billing your insurance company directly and documenting the loss with photos and daily moisture readings so your adjuster sees proof instead of a one-line bill. Call (412) 226-9468 the moment the water is more than you want to mop, or start with our emergency water removal team and we will call you right back.

Once the mess is handled, an hour of prevention beats another burst line. The Red Cross list is cheap and it works:

• Let cold water drip from faucets served by exposed pipes when a hard freeze is forecast. A trickle keeps water moving so it cannot freeze solid.
• Open the cabinet doors under sinks on exterior walls so warm room air reaches the plumbing.
• Hold the thermostat at one temperature day and night. A lower nighttime setting saves a little on heat and risks a much bigger repair.
• If you leave for the winter, keep the heat on, set no lower than 55 degrees.
• Keep garage doors closed if water lines run through the garage, and insulate exposed pipes in unheated spaces.

Empty homes are where the worst calls come from. A rental between tenants or a house closed up while the family travels can drop below freezing, split a line on a Friday, and run until someone opens the door on Sunday. If a home sits empty in a Pennsylvania winter, keep the heat on and have someone check it after a cold snap.

None of this is expensive. A bag of foam pipe sleeves costs less than a single wet-drywall repair, and the cheapest night of your winter is the one where a faucet drips and nothing splits.