Protect your home from expensive water damage with these proven prevention strategies
When temperatures plummet, frozen pipes become one of the most common and destructive plumbing emergencies homeowners face. A single burst pipe can dump hundreds of gallons of water per hour into your home, causing tens of thousands of dollars in damage. Fortunately, frozen pipes are entirely preventable with proper preparation and vigilance.
Pipes freeze when water inside them drops below 32°F. The real danger occurs when ice forms inside the pipe. Water expands when frozen, creating tremendous pressure—up to 4,000 psi—inside the pipe. This pressure doesn't just freeze the water; it stresses pipe joints and creates weak points. Most bursts actually happen when the ice begins to thaw, releasing pressurized water through the cracked pipe.
Understanding which pipes in your home face the greatest freezing risk helps you prioritize prevention efforts:
Pipe insulation is one of the most cost-effective preventative measures you can take. Foam pipe sleeves, available at any hardware store, are easy to install and relatively inexpensive. For added protection in extremely cold climates, consider heat tape or heat cables, which provide active warming when temperatures drop. Wrap insulation thoroughly around pipes in unheated areas, paying special attention to joints and valves.
Cold air infiltration through cracks and gaps rapidly drops temperatures around pipes. Inspect areas where pipes pass through walls, floors, and ceilings. Use caulk, spray foam, or weatherstripping to seal any gaps you find. Remember that even small openings can let in enough freezing air to freeze nearby pipes.
When temperatures drop below freezing, open cabinet doors under kitchen and bathroom sinks to allow warm air to circulate around pipes. Keep interior doors open throughout your home to maintain even temperatures. This simple step costs nothing and provides significant protection.
Running water—even a slow drip—generates friction heat and prevents ice from forming. When overnight temperatures fall into the teens or lower, let cold water drip from faucets served by exposed or vulnerable pipes. While this increases your water bill slightly, it's far less expensive than repairing burst pipes and water damage.
Your thermostat should be set to the same temperature day and night during cold snaps. Lowering nighttime temperatures might save on heating costs, but it can put your pipes at risk. If you're leaving town, set your thermostat no lower than 55°F and have someone check your home daily.
Before winter arrives, disconnect, drain, and store outdoor hoses. Close interior valves supplying outdoor hose bibs, then open outdoor faucets to drain remaining water. This prevents freezing water from backing up into pipes inside your home. See our guide on preventing plumbing emergencies for year-round tips.
When temperatures drop dramatically, take additional precautions:
Early detection can prevent disaster. Watch for these warning signs:
If you suspect a frozen pipe, turn off your main water supply immediately and call a plumber. Never try to thaw a pipe with an open flame—this creates fire risk and can damage pipes.
For homes in extremely cold climates or properties with histories of frozen pipes, consider professional solutions. Licensed plumbers can install frost-proof faucets, add pipe heat tracing systems, relocate vulnerable pipes, or improve your home's insulation. Our professional plumbing services include comprehensive winterization assessments.
If a pipe does freeze or burst, act quickly. Shut off your main water valve immediately. If you see any signs of electrical hazard—water near electrical outlets, panels, or appliances—leave the area and call an electrician. Document damage with photos for insurance purposes, then contact a licensed plumber for repairs.
Contact First Plumbing Pro immediately if you suspect frozen pipes. Our licensed professionals can safely thaw pipes, repair any damage, and implement prevention strategies to protect your home through the winter.