Protecting Your Pipes in a Texas Freeze

Ice blocks cause catastrophic flooding in Texas homes and cause major damage. Water expands when it freezes creating pressure that ruptures copper and plastic pipes. Pipes running through attics or inside exterior walls are often the very first to fail during a freeze in Northeast Houston. You can reduce this high risk by winterizing exposed systems and managing water flow. This guide covers which areas need the most attention, explains why running a faucet helps, and details how cabinet warmth protects your plumbing. These steps save you time and money on repairs later.

Identifying Vulnerable Pipes in Your Home

Ice expands with force. This expansion is what breaks pipes, not the freezing temperature itself. You must locate the long runs of plumbing in your home. The attic is the most dangerous spot. Pipes there lack insulation and are exposed to the freezing night air. Exterior walls are equally risky because the metal or copper conducts heat away from the house. Look for pipes in unheated garages or crawlspaces as well. Do not forget the exposed pipes around your pool equipment enclosures. These fixtures often sit directly under the sky and have no protective covering against the Texas frost.

Understanding the Drip Strategy

Many people believe the heat generated by running water keeps pipes warm. Running water is not a heater. It merely keeps the water moving. This prevents the water from stagnating in the line where it might freeze and form a blockage. When a blockage forms, the water behind it has nowhere to go. It expands and bursts the pipe. A steady drip maintains water movement and relieves the pressure. Set the faucet to a slow trickle rather than a heavy stream. This preserves the water supply while ensuring the pressure does not build up behind the ice obstruction.

Preparation Before the Freeze Arrives

Disconnect all garden hoses from the exterior spigots. Water trapped in the hose will freeze. When the ice expands, it exerts pressure on the connection point between the hose and the pipe. This ruptures the seal and the pipe itself. You should also know exactly where your main water shut-off valve is located. If a pipe ruptures during the night, turning off the supply stops the flood before it damages your floors. Open cabinet doors under sinks in the kitchen and bathroom. This action allows warm air to reach the plumbing inside the cabinet, which protects pipes that run through exterior walls.

Actions During a Freezing Warning

Set your thermostat to a minimum of 65 degrees. Lowering the heat to save money is dangerous. Keeping the heating system running prevents the ambient temperature of the house from dropping to the frost line. Leave your cabinet doors open and let your faucets drip. If a pipe freezes completely, you cannot fix it without turning off your water. Insulate any exposed pipes with foam sleeves or tape. These materials act as a barrier against the cold. Keep your garage door closed if you have plumbing running through it. The garage becomes an ice box when the temperature drops.

Inspecting the Damage After the Thaw

Turn on your faucets slowly one at a time. Check the flow rate and pressure. A sudden drop or a hissing sound indicates a crack in the line downstream from that valve. You should look for physical signs of damage. Hold your hands behind faucets or wet walls to feel for dampness. Drywall absorbs water and swells when it dries out, often pushing away from the studs. If you find a crack in a visible pipe, you will likely need a replacement. In Texas, replacing a water heater or working on gas lines requires a licensed plumber, and often a permit depending on the scope and jurisdiction. Gas work is illegal for unlicensed contractors, so always call a professional for major repairs.

Frequently asked questions