Preventing Frozen and Burst Pipes in North Texas

Why North Texas Pipes Freeze When Northern Homes Don't

In Minnesota, plumbing is routed through conditioned interior spaces and buried below a deep frost line. In North Texas, it is the opposite. Our homes were designed for heat, not cold. Water supply lines commonly run through unconditioned attics, exterior walls with minimal insulation, and shallow crawlspaces — all of which are fine during a normal Texas winter and disastrous during a hard freeze.

The February 2021 winter storm (Winter Storm Uri) exposed this vulnerability at massive scale. Temperatures dropped into the single digits and stayed there for days, the power grid failed, and homes lost heat for extended periods. Pipes in attics and exterior walls froze solid, and when they thawed they split — flooding ceilings and walls. Restoration companies across DFW ran nonstop for weeks. The lesson: our infrastructure has a low tolerance for sustained cold, and preparation is the only defense.

How Frozen Pipes Actually Burst

Understanding the mechanism helps you prevent it. As water freezes it expands about 9% in volume. The burst, however, does not usually happen at the ice blockage itself — it happens downstream, between the ice and a closed faucet, where water pressure builds with nowhere to go. That trapped pressure ruptures the pipe. This is why a dripping faucet is such effective protection: it relieves pressure by giving water somewhere to escape.

The most vulnerable pipes are those exposed to unheated air: attic runs, lines in exterior walls, hose bibs and outdoor spigots, and pipes in unheated garages. A single unprotected line in an attic can dump hundreds of gallons through a ceiling in an hour once it thaws — which is precisely how so much of the 2021 damage occurred.

Before the Freeze: Preparation Checklist

Preparation is cheap; a burst-pipe restoration is not. When the National Weather Service forecasts temperatures at or below freezing — and especially when a multi-day hard freeze is predicted — work through this checklist.

• Disconnect and drain garden hoses; cover exterior hose bibs with insulated faucet covers.
• Insulate exposed pipes in the attic, garage, and exterior walls with foam pipe sleeves.
• Open cabinet doors under sinks on exterior walls so warm air reaches the pipes.
• Let faucets drip — a slow trickle from the fixtures farthest from the water main relieves pressure.
• Know where your main shutoff valve is and confirm it turns freely.
• Keep the thermostat at 55°F or higher even if you leave town.
• If you lose power (as many did in 2021), consider draining the system if the outage will be prolonged.

During an Extended Power Outage

The 2021 event was uniquely dangerous because the freeze coincided with grid failure — homes had no heat exactly when they needed it most. If you lose power during a hard freeze and cannot maintain heat, the risk shifts from 'a pipe might freeze' to 'pipes will freeze.'

In that scenario, consider shutting off the water at the main and opening faucets to drain the system, removing the water that can freeze and burst. Drain the water heater's supply as well if the outage is prolonged. It is far easier to recharge an empty system afterward than to repair a dozen split pipes and dry out flooded ceilings. If you use space heaters for warmth, keep them clear of combustibles — freeze events are also peak season for house fires from improvised heating.

If a Pipe Bursts: Immediate Steps

If you discover a burst — water pouring from a ceiling, a wall, or a fixture — act immediately. Shut off the water at the main to stop the flow. Cut power to affected areas at the breaker if water has reached outlets or fixtures. Then begin documenting for insurance and start moving belongings out of the water's path.

A frozen pipe burst is almost always a covered peril under a Texas homeowners policy, because it is sudden and accidental — provided you took reasonable steps to maintain heat. Document the failure, the source, and the damage before you clean up. Then get professional extraction and drying started fast, because attic and wall-cavity water hides and breeds mold within 24 to 48 hours.

• Shut off water at the main immediately.
• Cut power to affected circuits if water reached outlets or fixtures.
• Photograph and video the burst and resulting damage before cleanup.
• Call a restoration crew for extraction and structural drying — attic water spreads fast.

Why Fast Restoration Matters After a Freeze Event

Burst-pipe water rarely stays where you can see it. It travels along attic joists, saturates insulation, runs down inside wall cavities, and pools on top of ceilings before it breaks through. Surface drying is not enough — the trapped moisture in framing and insulation is what causes secondary damage and mold.

After a regional freeze event, demand for restoration can increase. Contact qualified providers to ask about their availability, drying plan, and documentation practices, and address immediate safety concerns first.