Frozen pipes are a serious winter threat that can cause thousands of dollars in water damage. The good news is that most frozen pipe incidents are preventable with proper preparation. This guide covers everything you need to know to protect your home.
Why Pipes Freeze
Water expands when it freezes, creating up to 40,000 pounds per square inch of pressure. This expansion is what causes pipes to burst. Pipes most vulnerable to freezing include:
Prevention Tips by Climate Zone
Essential Prevention Steps for All Homeowners
Use foam pipe insulation (R-3 or higher) on all exposed pipes in unheated areas. Cost: $0.50–$2 per foot.
Use caulk or spray foam to seal gaps around pipes where they enter the house. Check for drafts near pipes.
For pipes in extremely vulnerable areas, electric heat tape provides active warming. Cost: $50–$200 per pipe.
Every household member should know where the main water shutoff valve is and how to use it.
What to Do If Pipes Freeze
If you suspect a pipe has frozen, act quickly to prevent bursting:
- Shut off the water supply to prevent flooding if the pipe bursts
- Open the faucet connected to the frozen pipe to allow melting water to drain
- Apply gentle heat to the frozen section using a hair dryer, heating pad, or towels soaked in hot water
- Do not use open flame (propane torch, lighter) — this can damage the pipe and start a fire
- Call a plumber if you can't locate or access the frozen section
Signs of Frozen Pipes
Watch for these indicators that a pipe may be frozen:
Cost of Frozen Pipe Damage
Frozen pipe damage can be expensive. Here's what you might face:
| Damage Type | Typical Cost |
|---|---|
| Pipe repair (single pipe) | $200 – $600 |
| Water damage cleanup | $1,000 – $5,000 |
| Drywall repair | $300 – $1,500 |
| Flooring replacement | $500 – $5,000+ |
| Mold remediation | $1,500 – $10,000 |
| Full pipe replacement | $1,000 – $5,000 |
Frozen Pipe Emergency? Call Now.
Connect instantly with licensed emergency plumbers. Available 24/7.