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How to Prevent Frozen Pipes This Winter: 10 Expert Tips

Last updated October 25, 2026

The short answer

Insulate Exposed Pipes

Pipes in unheated areas like attics, garages, and crawl spaces are most at risk. Wrap them with foam pipe insulation or heat tape, which you can find at most hardware stores. Pay special attention to elbows and joints where freezing often starts.

For a quick fix, use old towels or newspaper to wrap exposed pipes during a cold snap. This is not a permanent solution, but it can help in an emergency. Make sure insulation is dry and secure, and check it each winter for wear.

Keep Water Moving

When temperatures drop below freezing, let a slow trickle of water run from one faucet, preferably the one farthest from your main shutoff valve. Moving water is less likely to freeze, and the drip can relieve pressure in the system.

Open cabinet doors under sinks to allow warm indoor air to reach the plumbing. This is especially helpful in kitchens and bathrooms. Keep the house temperature set to at least 55 degrees Fahrenheit, even when you are away.

Seal Cold Air Leaks

Cold drafts can freeze pipes even in heated spaces. Inspect around windows, doors, and where pipes enter your home. Use caulk or spray foam to seal gaps and cracks that let in cold air.

Check for missing insulation in walls and floors near exterior pipes. If you live in Mesquite, keep a written record of your shutoff valve location and any areas that tend to get cold. This helps you act fast if a problem occurs.

Know Your Shutoff Valve

Before winter, find your main shutoff valve and make sure it works. If a pipe bursts, turning off the water quickly can limit damage. Label the valve clearly so everyone in your home knows where it is.

Keep a wrench or tool near the valve in case it is stiff. Practice turning it off and on once a year. This simple step can save you from a major mess and costly repairs.

  • Wrap pipes with foam insulation or heat tape
  • Let faucets drip during freezing nights
  • Open cabinet doors to warm pipes
  • Seal cracks and gaps with caulk
  • Keep thermostat at 55 degrees or higher
  • Locate and test your main shutoff valve

What to Do If Pipes Freeze

If a pipe freezes, turn off the water at the main valve immediately. Then use a hairdryer or space heater to warm the pipe slowly, starting from the faucet end. Never use an open flame, as it can damage the pipe or start a fire.

If the pipe has already burst, shut off the water and call local water damage pros. They can extract water and dry your home to prevent mold. For help, see the pages on pipe leak detection and cleanup and burst pipe damage cleanup.

  • Turn off the main water valve
  • Warm the pipe slowly with a hairdryer
  • Check for cracks or leaks as ice melts
  • Call local water damage pros if a pipe bursts
  • Take photos of any damage for your records

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Frequently asked questions

At what temperature should I drip my faucets?

Drip faucets when the outdoor temperature is expected to drop below 20 degrees Fahrenheit, especially if your home has poor insulation. The drip should be a steady trickle, not just a few drops, to keep water moving through the pipes.

How long does it take for pipes to freeze?

It depends on the pipe's location and insulation. Pipes in unheated areas can freeze within a few hours of exposure to temperatures below 20 degrees. Pipes inside heated walls may take longer. Always take precautions when a hard freeze is forecast.

Can I use a space heater to thaw frozen pipes?

Yes, but use it safely. Keep the heater away from flammable materials and never leave it unattended. Aim it at the frozen section, and open the faucet to allow water to flow as the ice melts. Never use a blowtorch or other open flame.

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