Burst Pipes in a North Texas Freeze: Prevention, First Steps and Cleanup

Why do pipes burst in a North Texas freeze?

Water expands as it turns to ice, and the pressure between an ice plug and a closed faucet can split a pipe. Homes in North Texas are built for mild winters, so supply lines often run through unheated attics and exterior walls with little insulation. The pipe usually bursts during the freeze but leaks when the ice melts.

The ice itself does not always split the pipe where the ice sits. It is the trapped water between the ice and a closed fixture that is squeezed, and the weakest point of that section opens. When the temperature rises, the ice melts and water flows out of the crack, which is why a house can seem fine at night and flood by noon.

North Texas homes are designed for heat more than for cold. Many sit on slabs with supply lines running through the attic and the walls, and plastic PEX lines are common in newer homes. Fittings, hose bibs and anything outside can still fail.

A hard freeze is the exception here, not the rule. That is exactly what makes it costly: neither the home nor its owner has the habit of preparing for it, and the plumbers and crews that normally respond are all busy at once.

How often does it freeze around Celina?

At DFW Airport, the National Weather Service shows roughly 33 days a year at or below 32 F, with the average last freeze in mid-March and the first in late November. That station is about 35 miles south of Celina, so use it as a regional guide. Hard multi-day freezes are the rare, costly end of that range.

The numbers above describe a typical year at the airport station, not a forecast for your street, so treat the regional figure as the honest anchor. In a typical year, plan on freezing days showing up between late November and mid-March.

February 2021 is the local reference point for a severe event. The National Weather Service recorded DFW's low that month at minus 2 F, the second-coldest temperature ever recorded there. The storm put most of Texas below freezing for days, caused widespread power outages, burst pipes and boil-water advisories, and all 254 counties were under a winter-storm warning. We quote no hour count because published reports disagree.

The lesson for a newer home is that a power outage and a freeze can happen together. A house without heat for hours loses the warmth that was protecting the attic and wall lines, and a pump or a gas heater may not run.

Which pipes burst first, and how do I protect them?

Attic supply lines, lines in exterior walls, hose bibs and above-ground irrigation backflow assemblies are the usual failures. Before a hard freeze, cover outdoor fixtures, insulate exposed lines, open cabinet doors on exterior walls, let a faucet drip, and keep the heat on. Know where the main shut-off is before you need it.

Prevention in a new house is mostly cheap and tedious. The single most useful step is knowing where the main shut-off valve is and making sure everyone in the house can turn it. In a master-planned community, the valve is often inside the garage or at the meter box; find it now, not at midnight.

Drip a faucet only on lines you worry about, and keep the thermostat steady if you travel. Disconnect hoses from outdoor spigots. Cover or insulate above-ground irrigation backflow assemblies, and shut off the irrigation controller. If you plan to leave the house for a trip in winter, ask a neighbour to check it.

Our irrigation leak water damage page covers the wet slab edge that a split backflow assembly can leave behind.

What do I do in the first hour when a pipe bursts?

Close the main water valve, keep away from standing water near outlets and appliances, and switch off power to the area only if the panel is safely reachable. Photograph the damage, move valuables to dry ground, and call for water extraction. Do not run ceiling fixtures that are holding water.

Closing the main valve limits what comes out of the broken line. Once it is closed, open a low faucet to drain remaining water. Stay out from under a sagging or bulging ceiling, and leave anything that needs opening to a crew.

Photograph and video before you move things, because pictures support an insurance claim. Call your insurer early, since a standard homeowners policy often covers sudden and accidental water damage such as a burst pipe, though coverage is decided by your insurer under your own policy.

Then call a licensed plumber for the pipe and a crew for the water. During a widespread freeze, both are busy, and a crew is dispatched as fast as one is available. Phones here are answered 24/7, and what you can do in the meantime is limit the spread yourself.

• Close the main water valve, then open a low faucet to drain the lines
• Stay out of standing water near outlets; switch off power only if the panel is safely reachable
• Photograph and video the damage and the broken pipe
• Move furniture, electronics and rugs to dry ground
• Call your insurer, a licensed plumber and a restoration crew

What does cleanup look like after a freeze burst?

A crew extracts standing water, then checks the attic insulation, ceilings, wall bases and floors with moisture meters and thermal tools. Wet insulation and sagging drywall are often removed, and air movers and dehumidifiers dry the rest. Readings are re-checked until materials reach their dry goal.

Water from an attic line goes down. It soaks insulation, which holds water like a sponge, then drywall, then runs through light fixtures and into wall cavities. In a two-storey house the water can reach the floor below. The pipe's location tells the crew where to look, but a thermal camera finds the wet path.

Because the cause is a freeze, the water is typically clean to begin with, and the work is mostly removal and drying. That is a general pattern. Water that sat for days, or that mixed with other sources, is assessed again once someone sees it. Our pages on frozen pipe water damage and burst pipe water damage describe each stage.

The EPA says to dry water-damaged areas within 24 to 48 hours to limit mold. That is a guideline, not a deadline. Mold may have formed in materials that were wet through a long outage even if they later dry, so ask about hidden moisture and see the mold inspection page if you are unsure.

What if the freeze also knocks out power or water service?

A freeze that cuts power removes the heat protecting your pipes, and a boil-water advisory may follow. Keep the main valve location in mind, drain lines if you must leave a house without heat, and check your city's notices. During the February 2021 storm, outages, burst pipes and boil-water advisories were widespread across Texas.

If a long outage is likely, some homeowners shut off the main valve and open the lowest faucet to drain the lines before the house cools. Others ask a plumber how to winterize their particular setup. That step depends on the house and is worth deciding before the freeze, not during one.

Check your utility's notices. Celina buys treated water from the Upper Trinity Regional Water District, while other towns in the area, from Gunter to Savannah, have their own utilities or districts, so ask your city or water district what applies to you.

When service returns, open faucets slowly and look for leaks before leaving the house. A line cracked during the freeze may only leak once the pressure is back, which is another way a freeze turns into a flood hours later. For general guidance on filing, see water damage insurance claims in Texas.