When temperatures drop below freezing, the water inside your pipes can freeze and expand — causing pipes to crack or burst. A burst pipe can dump hundreds of gallons of water into your home in minutes. Here's how to prevent it.
Know Which Pipes Are at Risk
Pipes in unheated spaces — crawl spaces, attics, garages, and exterior walls — are the most vulnerable. Pipes along exterior walls that aren't properly insulated are also at risk.
Before the Cold Hits
- Disconnect and drain garden hoses
- Shut off and drain irrigation systems
- Insulate exposed pipes with foam pipe insulation (available at any hardware store)
- Seal gaps where cold air enters around pipes
During a Cold Snap
- Keep cabinet doors under sinks open to let warm air reach pipes
- Let faucets drip slightly — moving water freezes much more slowly
- Keep your thermostat at 55°F or above, even when away
If you have pipes that have frozen before, it's worth having a plumber assess your home's insulation and pipe routing before next winter.