How Do You Prevent Frozen Pipes Before Winter?
Last updated October 31, 2026
The short answer
Insulate Your Pipes
Wrap pipes in unheated areas like attics, garages, and crawl spaces with foam pipe insulation. Pay special attention to pipes running along exterior walls, as these freeze first. Use pipe sleeves or heat tape for extra protection in very cold spots.
Check for gaps around pipe entry points into your home and seal them with caulk or spray foam. This keeps cold air from reaching the pipes. Insulation is a simple weekend project that makes a big difference when temperatures drop.
- Foam pipe sleeves for straight runs
- Heat tape for problem areas
- Caulk around pipe entry points
- Insulate the attic floor and garage walls
- Wrap outdoor spigots with covers
Seal Drafts and Air Leaks
Cold air sneaks in through gaps around windows, doors, and vents, chilling the pipes behind walls. Use weatherstripping on doors and windows, and add door sweeps to block drafts. Check the foundation for cracks and seal them to keep the cold out.
Inspect your crawl space and attic for open vents or broken seals. Cover any openings with rigid foam board or spray foam. The less cold air that reaches your pipes, the lower the risk of freezing.
Drain Outdoor Water Lines
Disconnect garden hoses and drain outdoor spigots before winter. Shut off the water supply to exterior faucets from inside your home, then open the spigot to let remaining water drain. Leave the spigot open so any leftover water can expand without breaking the pipe.
If you have an irrigation system, drain it thoroughly and blow out the lines if possible. For homes in colder climates, consider installing frost-proof spigots. This step prevents the most common freeze-related bursts.
Keep a Slow Drip During Freezing Nights
When temperatures are forecast to drop below freezing, let a faucet in your home drip slowly. Running water is less likely to freeze because it keeps moving. Drip both hot and cold taps, and open cabinet doors under sinks to let warm air circulate around the pipes.
A slow drip is a simple habit that can save you from a burst pipe. If you leave home for several days during cold weather, keep the heat on at a low setting and consider shutting off the main water valve and draining the system.
Know Your Shutoff Valve Location
If a pipe does freeze and burst, the first step is to shut off the main water valve to limit flooding. Find this valve now, before an emergency, and make sure it turns easily. If you live in Mesa, write the location down and share it with everyone in your household.
A frozen pipe can cause significant water damage in a short time. If you experience a burst pipe, drying out the area quickly is key. Local water damage pros can help with water extraction and drying to prevent mold and structural issues.
- Locate the main shutoff valve near your water meter
- Test the valve to ensure it works
- Label the valve clearly
- Teach family members how to turn it off
- Keep tools nearby to operate the valve
Talk to someone now
Phones are answered 24/7 for Mesa and nearby communities.
Call Now (480) 898-4279Frequently asked questions
What temperature should I keep my house to prevent frozen pipes?
Keep your thermostat at 55 degrees Fahrenheit or higher, even when you are away. This is warm enough to keep pipes from freezing in most homes. If you plan to be gone for an extended period, shut off the water supply and drain the pipes.
How do I thaw a frozen pipe safely?
First, open the faucet so water can flow as the ice melts. Use a space heater, hair dryer, or warm towels to gently heat the pipe, starting from the faucet end. Never use an open flame. If the pipe is cracked or leaking, shut off the main water valve and call a plumber.
What should I do if a pipe bursts?
Shut off the main water valve immediately to stop the flow. Then turn off your electricity if water may have reached outlets or appliances. Remove as much water as possible with towels or a wet vacuum. Contact a plumber for the pipe repair and consider water damage cleanup services to dry the area thoroughly.