When water freezes, it expands and puts tremendous pressure on whatever is containing it, including metal or plastic pipes. (Photo by Molly Rippinger)
Pipes that freeze most frequently are those that are exposed to severe cold, like outdoor hose bibs, water sprinkler lines and water supply pipes in unheated interior areas like basements and crawl spaces, attics, garages or kitchen cabinets. Pipes that run against exterior walls that have little or no insulation are also subject to freezing.
During cold weather, take preventative action.
- Keep garage doors closed if there are water supply lines in the garage.
- Open kitchen and bathroom cabinet doors to allow warmer air to circulate around the plumbing. Be sure to move any harmful cleaners and household chemicals out of the reach of children.
- When the weather is very cold outside, let cold water drip from the faucet served by exposed pipes. Running water through the pipe—even at a trickle—helps prevent pipes from freezing.
- Keep the thermostat set to the same temperature both during the day and at night.
- If you will be going away during cold weather, leave the heat on in your home, set to a temperature no lower than 55 degrees.
How to thaw frozen pipes.
- If you turn on a faucet and only a trickle comes out, suspect a frozen pipe. Likely places for frozen pipes include against exterior walls or where your water service enters your home through the foundation.
- Keep the faucet open. As you treat the frozen pipe and the frozen area begins to melt, water will begin to flow through the frozen area. Running water through the pipe will help melt ice in the pipe.
- Apply heat to the section of pipe using an electric heating pad wrapped around the pipe, an electric hair dryer, a portable space heater (kept away from flammable materials) or by wrapping pipes with towels soaked in hot water. Do not use a blowtorch, kerosene or propane heater, charcoal stove or other open flame device.
- Apply heat until full water pressure is restored. If you are unable to locate the frozen area, if the frozen area is not accessible or if you cannot thaw the pipe, call a licensed plumber.
- Check all other faucets in your home to find out if you have additional frozen pipes. If one pipe freezes, others may freeze, too.
Future protection to prevent frozen pipes.
- Consider relocating exposed pipes to provide increased protection from freezing.
- If the home is remodeled, a professional can relocate the pipes.
- Add insulation to attics, basements and crawl spaces. Insulation will maintain higher temperatures in these areas.
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