How to Prevent Frozen Pipes in Iowa
Pipes freeze when water inside them is exposed to freezing temperatures long enough to turn into ice.
As the ice expands, pressure builds inside the pipe.
Contrary to popular belief, pipes don't usually burst because the ice expands—they burst because the pressure created by the blockage has nowhere to go.
Once the pipe thaws, water escapes through the damaged section, often causing extensive flooding.
Pipes Most Likely to Freeze
Some plumbing is more vulnerable than others.
Pay special attention to pipes located in:
- Exterior walls
- Garages
- Crawl spaces
- Unfinished basements
- Attics
- Under kitchen sinks along outside walls
These areas are more exposed to cold temperatures and should be monitored during severe weather.
1. Disconnect Garden Hoses
Before freezing temperatures arrive:
Disconnect all hoses.
Drain them completely.
Store them for the winter.
Leaving hoses attached can trap water inside the plumbing and increase the likelihood of freeze damage.
2. Insulate Exposed Pipes
Pipe insulation is one of the simplest ways to reduce the risk of freezing.
Insulating exposed plumbing in unheated areas helps slow heat loss and provides additional protection during cold weather.
3. Seal Cold Air Leaks
Small openings where plumbing enters your home can allow cold air to reach pipes.
Inspect areas around:
- Foundation penetrations
- Utility openings
- Basement walls
- Crawl spaces
Sealing these gaps can help keep warmer air around your plumbing.
4. Keep Your Home Warm
Even if you're leaving for a weekend or vacation, avoid turning your heat completely off.
Maintaining a consistent indoor temperature helps reduce the risk of frozen pipes.
5. Open Cabinet Doors
Pipes located under kitchen or bathroom sinks along exterior walls can benefit from warmer indoor air.
Opening cabinet doors during extreme cold allows heat to circulate around the plumbing.
6. Let Faucets Drip During Extreme Cold
During prolonged periods of subzero temperatures, allowing a small trickle of water to flow from vulnerable faucets can help prevent pressure from building inside the pipes.
This is most helpful for plumbing located along exterior walls.
7. Know Where Your Main Water Shutoff Is
If a pipe bursts, shutting off your home's water quickly can dramatically reduce water damage.
Every homeowner should know:
Where the shutoff valve is located.
How to operate it.
It only takes a few minutes to learn—and it could save thousands of dollars.
What If a Pipe Freezes?
If you suspect a frozen pipe:
Turn on the affected faucet to relieve pressure.
Warm the pipe gradually using a hair dryer, warm towels, or by increasing the room temperature.
Never use an open flame, propane torch, or other direct flame to thaw a pipe.
If the pipe has burst, shut off the main water supply immediately and contact a licensed plumbing contractor.
The sooner the issue is addressed, the less likely it is to result in significant water damage.
Frequently Asked Questions
At what temperature do pipes freeze?
Pipes become increasingly vulnerable when temperatures remain below 32°F, especially if they're exposed to cold air or poorly insulated. The risk rises significantly during extended periods below freezing.
Should I leave my heat on if I'm leaving town?
Yes. Even if you're away for several days, keeping your thermostat at a safe temperature helps protect your plumbing system.
Can frozen pipes thaw on their own?
Sometimes they do, but that's not always a good thing. If the pipe has already cracked, it may begin leaking or burst once the ice melts.
Trust Beebe Drain & Sewer Co.
At Beebe Drain & Sewer Co., we're proud to help homeowners throughout the Des Moines metro prepare for Iowa's toughest winters.
Whether you're dealing with frozen pipes, burst plumbing, water heater issues, or other winter plumbing concerns, we'll identify the problem, explain your options, and help protect your home from further damage.
Preparing before freezing temperatures arrive is one of the best ways to avoid costly plumbing emergencies.
Beebe Drain & Sewer Co. proudly serves homeowners in Des Moines, West Des Moines, Urbandale, Grimes, Johnston, Clive, Waukee, Ankeny, Altoona, Pleasant Hill, Norwalk, Indianola, Ames, and surrounding Central Iowa communities.
