Frozen and Burst Pipes in North Texas: What Happens on the Thaw

Why do pipes freeze and leak in Kaufman County?

Water expands as it freezes, and the ice plug traps pressure between itself and the closed faucet. That pressure can split the pipe wall or a joint. The crack often stays sealed by ice until the line thaws, so the flooding begins when the weather warms and not on the coldest night.

North Texas is not Minnesota, and that is the trouble. Terrell's climate summaries show a January average low near 33 degrees Fahrenheit and roughly 40 to 50 frost days a year, with only about an inch of snow. Hard freezes happen on a handful of nights most winters, which means many houses were built or plumbed with less cold-weather protection than a northern home would have.

Lines in places that sit outside the heated envelope are the ones that fail. Water supply lines in exterior walls, attic runs, garage walls, and uncovered lines at outdoor hose bibs freeze first. On rural Kaufman County lots, long supply lines from a well or a meter at the road can run through open ground with little cover.

The part that surprises people is the timing. A pipe may split on a cold night and show nothing, because the ice acts like a plug. When the temperature rises above freezing, the plug melts and the water that was held back pours through the split. A home that was empty for the holidays can fill with water for hours before anyone notices.

Which parts of a North Texas house freeze first?

Anything on or inside an exterior wall, in an unheated attic, in a garage, or under a pier-and-beam floor is at risk, along with irrigation lines, outdoor spigots and rural supply lines. Slab homes are not immune, because some have plumbing and water heater lines in attics and exterior walls.

The table lists the places crews and plumbers most often see freeze damage in this part of Texas, with the usual reason and what to check on the thaw. It describes general patterns, so your house may have different routing. A plumber can tell you where the lines actually run.

Older homes in historic Terrell, Elmo, Lawrence and Crandall often have pier-and-beam floors, where supply and drain lines hang under the floor in a crawl space. Newer slab homes in Forney, Talty, Fate and Heath can have lines in the attic and exterior walls instead. The risk is the same in both: cold air reaching a pipe that has no insulation between it and the outdoors.

What should you do first when pipes thaw and leak?

Close the main shutoff valve, stay out of standing water near outlets, and turn off power to the wet area only if you can reach the panel safely. Then call a licensed plumber for the pipe and a restoration crew for extraction and drying. Take photos before anything is moved.

Find the main valve before the weather turns, not during the emergency. In some Terrell-area homes it is at the street meter box or on an exterior wall near the water heater. A shutoff that sticks or breaks is its own emergency, so test it now and again each fall.

If water is coming through a ceiling, do not stand under it, and do not flip switches on a wet circuit. Water in a light fixture can mean a hot wire in contact with moisture. If the breaker box is dry and reachable, turning off that area's breaker is reasonable. If you cannot reach it without standing in water, leave it and call for help.

Do not try to thaw a frozen pipe with an open flame or a torch. A hair dryer, a heating pad or warm towels on an exposed section of pipe are safer, with the faucet open so melting water can flow. If you cannot see where the freeze is, or a pipe has already split, leave it for a plumber.

• Shut off the main water valve and open the lowest faucet to drain the lines
• Move cars, furniture and electronics out of the wet area if it is safe to do so
• Photograph the source, the water and damaged items before moving anything
• Call a licensed plumber to repair the pipe, and a restoration crew to extract and dry
• Call your insurer early and ask how burst-pipe damage is covered under your policy

What did the February 2021 freeze show about North Texas houses?

The NWS Fort Worth summary of the February 13 to 17, 2021 storm records DFW Airport at minus 2 degrees on February 16, the coldest there since 1949, with 139 consecutive hours at or below freezing. Uninsulated exterior-wall pipes burst across North Texas, and water systems statewide struggled.

Those readings are for DFW Airport, not Terrell, but the storm hit the whole region. Water utilities asked customers to curtail non-essential use, including the North Texas Municipal Water District that supplies treated Lake Tawakoni water to Terrell, and boil-water advisories appeared across Texas. In Kaufman County, the District Attorney warned residents about plumbing scammers who asked for money up front while pipes were bursting.

The lesson for a homeowner is practical. A long freeze exposes every weak point in a house at once, and the thaw releases all of it together. Plumbers and restoration crews are busiest on exactly those days, so a quick call and a patient wait is realistic. Keep the number handy before you need it.

How do crews find hidden water after a burst pipe?

A crew traces water from the visible damage using moisture meters and thermal imaging, then opens walls or ceilings where readings stay high. It extracts standing water, sets air movers and dehumidifiers, and re-checks readings until materials are dry. The estimate is explained and approved before the work begins.

After a thaw leak, the visible stain is rarely the whole story. Water runs down inside a wall cavity, soaks insulation, and spreads along the bottom plate. A moisture meter reads the water content of drywall, wood and subfloor, and a thermal camera can show cooler, wetter areas without cutting anything open.

Extraction comes first, because every gallon removed is a gallon the equipment does not have to evaporate. Then drying starts, and the crew returns to compare readings against a dry reference. Some materials, such as wet carpet pad and soaked insulation, are usually removed instead of dried.

The EPA says to dry wet materials within 24 to 48 hours to limit mold growth. That is a guideline and not a deadline, and mold may already have started on a wet surface even when materials look dry later. If you see or smell mold after a leak, read the Texas mold rules guide before you hire anyone, because assessment and remediation are separately licensed.

How can you reduce the chance of frozen pipes next winter?

Insulate exposed lines, seal gaps that let cold air reach pipes, disconnect hoses and cover spigots before the first freeze, open cabinet doors on exterior walls, and let faucets drip on the coldest nights. If you leave town, know where the main shutoff is. None of this is a guarantee.

Prevention is mostly about keeping cold air away from the pipe and keeping water moving. Foam sleeves on accessible lines, caulk or foam at penetrations where pipes pass through walls, and covers on hose bibs all help. Before the first freeze, disconnect garden hoses and drain irrigation lines.

On a hard-freeze night, open the cabinet doors under sinks on exterior walls so room air reaches the pipes, and leave a trickle of water running at a faucet at the far end of the house. Keep the thermostat steady if you go away. Leaving the main off and the lines drained is the safest choice for a vacation home, and a plumber can show you how to do it.