How to Prevent Burst Pipes During Winter
When winter weather arrives, homeowners quickly shift their focus to heating systems, heavy blankets, and winterizing their wardrobes. However, one of the most critical zones of your home remains highly vulnerable to sub-zero temperatures: your plumbing system.
Frozen pipes are more than just a minor inconvenience—they are a ticking time bomb. When water freezes inside a pipe, it expands, creating immense pressure that can easily crack copper, PVC, or PEX lines. A single burst pipe can release hundreds of gallons of water per hour, leading to catastrophic structural damage, mold growth, and thousands of dollars in repair bills.
Fortunately, a few proactive steps can safeguard your home. Here is a definitive guide on how to prevent burst pipes during the coldest months of the year.
1. Insulate Exposed Plumbing Lines
Pipes located in unheated areas of your home are at the highest risk of freezing. Walk through your property and identify lines running through your:
Attic
Basement
Crawl spaces
Garage
Under kitchen and bathroom cabinets
Wrap these exposed pipes with foam pipe insulation sleeves, fiberglass wrap, or specialized heating tape. This inexpensive DIY fix acts as a thermal blanket, keeping the ambient temperature around the pipes well above freezing.
2. Let Your Faucets Drip
It might sound counterintuitive to intentionally run your water, but a slow, steady drip can prevent a plumbing disaster. When freezing temperatures hit a critical low, open faucets connected to pipes that run along exterior walls just enough to allow a constant drip.
This technique does not actually prevent the water from freezing because of the movement; rather, it relieves the pressure buildup inside the pipe between the icy blockage and the faucet. Without that pressure buildup, the pipe is significantly less likely to rupture.
3. Disconnect Outdoor Hoses and Valves
Your outdoor plumbing is the front line against winter weather. Before the first hard freeze, disconnect all garden hoses from outdoor spigots. If left attached, water trapped inside the hose will freeze and expand back into the spigot, bursting the pipe inside your wall.
Once the hoses are removed, shut off the indoor valve leading to the outdoor spigots and drain the remaining water from the line. For added protection, install insulated outdoor faucet covers over the spigots.
4. Keep Interior Doors Open and the Heat On
Maintaining consistent heat circulation throughout your home is key to keeping your plumbing safe.
Open Cabinet Doors: Keep kitchen and bathroom cabinet doors open during severe cold snaps. This allows warm air from your home’s heating system to circulate around the pipes hidden beneath the sinks.
Maintain a Steady Thermostat: Avoid dropping your thermostat too low at night. Keeping the temperature uniform day and night reduces stress on your heating unit and keeps pipes warm.
Never Turn Off the Heat While Away: If you travel during the winter, never turn your heating system completely off. Set your thermostat to no lower than 55°F (12°C) to ensure your internal lines stay safe from sudden cold fronts.
5. Seal Gaps and Air Leaks
Cold winter winds slipping through small gaps can create localized freezing zones. Inspect your home’s exterior walls, foundation, and areas where cables or pipes enter the house.
Use masonry caulk, expanding foam insulation, or weatherstripping to seal up any cracks. Eliminating these icy drafts will prevent freezing air from blowing directly onto nearby water lines.
What to Do If a Pipe Freezes
If you turn on your faucet during a freeze and only a trickle comes out, you likely have a frozen line. Turn off the main water valve immediately to minimize damage if a split has already occurred, and keep the faucet open.
Attempting to thaw a pipe yourself using an open flame is dangerous and can ruin your plumbing infrastructure. If you suspect a pipe is frozen or has already ruptured, it is critical to call emergency plumbing services right away. Expert intervention can safely resolve the blockage before it turns into a devastating flood.