Protecting Your Pipes Before the Next Texas Freeze

North Texas does not get cold often, and that is exactly the problem. Homes in Rockwall and across the DFW metro are built for long hot summers, which means pipe runs end up in places a house in Minnesota would never allow — through uninsulated attics, along exterior walls, out in the garage, under the slab with a hose bib sticking straight out into the weather.

Then a front drops in overnight, we sit below freezing for thirty-something hours, and the phone does not stop ringing. Almost every one of those calls was preventable with an afternoon of work done back in the fall.

Why pipes actually burst

There is a common misunderstanding worth clearing up. The ice expanding inside the pipe is not usually what splits it. What happens is that an ice plug forms somewhere in the line, and water on the far side of that plug — between the ice and a closed faucet — has nowhere to go. Pressure builds in that trapped section until something gives.

That is why the split often shows up several feet away from where the ice actually formed, and it is why leaving a faucet cracked open works. You are not keeping the water warm. You are giving the pressure an escape route.

It is also why the damage frequently is not discovered until the thaw. The pipe cracks while frozen, holds together as long as the ice is plugging the hole, then lets go the moment things warm up and nobody is home.

Do this before the cold arrives

None of this is expensive. The materials for most of it fit in one trip to a hardware store, and the whole list is a weekend afternoon at most.

1. Disconnect every garden hose. A hose left attached traps water in the bib, and that frozen water backs up into the pipe inside your wall. This one item causes more freeze damage in our area than anything else.
2. Cover outdoor hose bibs with insulated foam caps once the hoses are off. They cost a few dollars each.
3. Find your main water shutoff and confirm it actually turns. Most are at the meter box near the curb or on the exterior wall near the front hose bib. If the valve is seized, get it replaced now rather than discovering it during an emergency.
4. Insulate pipe runs in the attic, garage, and crawlspace. Foam sleeve insulation is cheap. Pay attention to anything running along an exterior wall or near a soffit vent, because that is where cold air pours in.
5. Insulate the water heater lines if the unit sits in the garage or attic, and insulate a tankless unit's exterior piping too. Tankless heaters mounted outside are common here and are genuinely vulnerable.
6. Seal obvious drafts in the garage and crawlspace with expanding foam or weatherstripping. Cold air moving across a pipe freezes it far faster than still cold air.
7. Know where your sprinkler backflow preventer is, drain it, and wrap it. That brass assembly above ground is one of the most expensive freeze casualties.

What to do when a hard freeze is forecast

Once a freeze is a day or two out, the prep gets shorter and more specific.

• Open cabinet doors under sinks on exterior walls so household heat reaches the supply lines. Kitchen sinks on an outside wall are the classic freeze point.
• Let cold water drip from the faucet farthest from where the water enters the house. A steady drip is enough. You are relieving pressure, not heating the line.
• If you have a fixture on a truly exposed run, drip both the hot and cold sides. Hot water lines freeze too.
• Leave the thermostat at a normal temperature, even if you are leaving town. Setting it to 50 degrees to save on the bill is how people come home to a flooded house.
• If you are traveling during the freeze, shut off the main and open a couple of faucets to drain pressure out of the system. Have someone check the house.
• Shut off and drain the sprinkler system if you have not already.

If a pipe freezes but has not burst yet

The tell is a faucet that gives you a trickle or nothing at all while the rest of the house works fine. Move quickly, because the window between frozen and split is not long.

Open the affected faucet first. That gives melting water an exit and shows you progress. Then apply gentle heat along the pipe, starting nearest the faucet. If it is an under-sink line, a space heater in the cabinet with the doors open often does it. Keep going until full flow returns, then leave that faucet dripping for the rest of the cold snap.

While you are thawing, walk the house and look for water. Check ceilings under attic runs, the garage floor, and baseboards along exterior walls. A stain that was not there yesterday means the pipe already cracked.

If a pipe bursts

1. Shut off the main immediately. This is why you tested that valve back in the fall.
2. Open faucets throughout the house to drain the remaining pressure and water out of the lines.
3. If water is anywhere near outlets, panels, or light fixtures, cut power to that area at the breaker. If reaching the panel means walking through standing water, do not. Leave the house and call an electrician and us from outside.
4. Move what you can off the floor and start pulling up soaked material. Water sitting in carpet pad and drywall for two days becomes a mold problem on top of a plumbing problem.
5. Photograph everything before cleanup for your insurance claim.
6. Call us at (469) 338-5533. We answer 24 hours a day, including during freeze events, which is exactly when everybody needs a plumber at once.

The hard water angle nobody mentions

Water in Rockwall County and most of the metro is hard. Over years, scale builds up inside supply lines and narrows them. A narrowed pipe freezes faster, plugs more completely, and fails at a lower amount of ice than a clean one would.

Scale does the same thing to a water heater, and a heater that is already struggling to keep up in mild weather will fall behind badly when incoming water is coming in near freezing. If your hot water was already marginal in November, the first cold snap is where it becomes a real problem. Flushing the tank annually and treating hard water addresses both issues at once.

A word on repairs after a freeze

After a widespread freeze, demand goes vertical and standards slip. Be careful of anyone who wants to re-pipe an entire house before actually locating the failure, or who quotes a repair without opening the wall to see what broke. A single split in a copper line is a section replacement, not a whole-home job.

Repair cost varies a lot and it comes down to three things: where the break is, how much has to be opened up to reach it, and what material the line is. An accessible split in an attic or garage run is a straightforward fix. A break under the slab is a different conversation entirely, and any honest tech will locate it first and give you options rather than a single number. We give you the range and what drives it up front, before we start.

Wilson Family Plumbing, Heating & Air is family-owned and based right here in Rockwall, licensed as TX Master Plumber TXM11693 and TX HVAC TACLB2360E. We serve Rockwall County and out across the metro to Rowlett, Wylie, Garland, Heath, Fate, Royse City, Sachse, Dallas, Richardson, Plano, McKinney and Allen. If you want the freeze prep done right, or you are staring at water on the floor, call (469) 338-5533.