What Parts of a House Are Most at Risk for Frozen Pipes?
Last updated October 19, 2026
The short answer
Unheated Attics and Crawl Spaces
Your attic or crawl space plumbing is often the first to freeze. These areas have little to no heating, so temperatures can drop to match the outside air. An unprotected pipe in an attic is exposed on all sides to the cold. Any water left inside can quickly turn to ice, which expands and cracks the pipe, leading to a leak when it thaws.
Crawl spaces present a similar danger, as cold air can flow freely underneath your home. If your crawl space vents are not closed for winter, the space becomes a wind tunnel. Pipes running through here are highly susceptible. Sealing these vents and adding pipe insulation can be a critical winterization step.
Exterior Walls and Outdoor Faucets
Plumbing inside exterior walls is at significant risk. The wall cavity is often cooler than your home's interior, especially on north-facing sides. A pipe behind kitchen or bathroom cabinets on an outside wall has minimal insulation from the cold. A small gap in the siding can let freezing air directly contact the pipe.
Outdoor faucets, also called hose bibbs, are obvious freeze points. You must disconnect hoses and shut off the water supply to these faucets from inside your home. Draining the remaining water from the exterior line is essential. A properly installed frost-resistant faucet helps.
- North-facing walls lose heat fastest.
- Pipes behind kitchen sinks on outside walls.
- Pipes for bathtubs or showers on exterior walls.
- Uninsulated wall cavities with plumbing.
- Standard hose bibbs without a shutoff valve.
- Frost-resistant faucets that are improperly installed.
Basements, Garages, and Utility Rooms
Many basements are cooler than the rest of the house. While some are heated, others are not, or the heat may not reach plumbing in corners or near foundation walls. Pipes for laundry sinks, water heaters, or sump pumps can freeze if located in a cold basement zone. Keeping basement doors open to allow warm air circulation can help.
Garages are rarely insulated or heated. Any water supply line running through a garage door header or along an exterior wall is in danger. The same goes for utility rooms or mudrooms with exterior doors. Short, hard freezes can affect these areas.
Garages are rarely insulated or heated. Any water supply line running through a garage door header or along an exterior wall is in danger. The same goes for utility rooms or mudrooms with exterior doors. Short, hard freezes can affect these areas.
Signs a Pipe May Be Frozen
The first sign is often no water coming from a faucet when you turn it on. You might hear strange noises like clanking or bubbling from the pipes. Frost can form on visible sections of metal piping. Another clue is a strange odor from a drain, as ice blockages can trap sewer gases.
If you suspect a frozen pipe, act quickly to prevent it from bursting. Turn on the faucet to relieve pressure as it thaws. Apply gentle heat with a hair dryer or heating pad, starting near the faucet. Never use an open flame. If you cannot locate or thaw the pipe, you need to call a plumber.
What to Do After a Pipe Bursts
Your immediate action is to stop the water flow. Locate your home's main water shutoff valve and turn it off. If you live in DeSoto, keep your shutoff valve location written down. Then, call a qualified plumber to repair the broken pipe. Water damage can spread quickly into walls and floors.
Your immediate action is to stop the water flow. Locate your home's main water shutoff valve and turn it off. Then, call a qualified plumber to repair the broken pipe. Water damage can spread quickly into walls and floors.
After the leak is stopped, water damage restoration is often necessary. Standing water needs extraction, and affected materials require drying to prevent mold. Local water damage pros use tools like moisture meters and dehumidifiers for structural drying. Policies vary, and your insurer decides what is covered. Contact your insurance company to discuss your claim.
- Shut off the main water supply immediately.
- Call a plumber for the pipe repair.
- Remove standing water to prevent further damage.
- Dry out affected walls, floors, and belongings.
- Document the damage for an insurance claim.
- Address mold growth if drying is delayed.
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Call Now (469) 209-4452Frequently asked questions
Can pipes freeze in a generally mild climate?
Yes. Regions with generally mild winters still experience sudden winter cold snaps. Temperatures can drop below freezing overnight. Pipes in unheated areas are not accustomed to prolonged cold and can freeze during these sudden drops.
How can I prevent my pipes from freezing?
Insulate pipes in attics, crawl spaces, and garages. Seal air leaks near pipes with caulk or insulation. On very cold nights, let a trickle of water run from faucets served by vulnerable pipes. Keep cabinet doors open to allow warm air to circulate around plumbing.
Who should I call for water damage from a burst pipe?
First, call a plumber to stop the leak and repair the pipe. Then, for cleanup and drying, contact local water damage pros. They handle water extraction, structural drying, and moisture mapping to find hidden wetness and prevent mold.