By David Parks · eXp Realty · The Apollo Group · 2 min read
The Short Answer
Pipes freeze when temperatures drop and water sits in exposed lines. Insulating pipes, sealing drafts, and knowing how to shut off water can save you from a costly burst.
Stock photo: Pexels
Why pipes freeze
Water expands as it freezes, which can crack pipes. The risk is highest in unheated spaces like crawl spaces, garages, exterior walls, and attics, especially during sudden cold snaps.
Prevention steps
Insulate exposed pipes with foam sleeves.
Seal gaps where pipes enter the house.
Disconnect hoses and winterize outdoor faucets.
Keep the thermostat set to a steady temperature, even when traveling.
Open cabinet doors under sinks on exterior walls during hard freezes.
Let a faucet drip slowly during extreme cold.
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If a pipe freezes
Turn off the water at the main shutoff, open the faucet, and warm the pipe gradually with a hair dryer or warm towels. Never use an open flame. If a pipe bursts, shut off water immediately and call a plumber.
Be ready
Know where your main shutoff is and make sure everyone in the house can find it. Take photos of damage for insurance, and run fans to dry the area quickly.
Key Takeaways
Why pipes freeze: Water expands as it freezes, which can crack pipes.
Prevention steps: Insulate exposed pipes with foam sleeves.
If a pipe freezes: Turn off the water at the main shutoff, open the faucet, and warm the pipe gradually with a hair dryer or warm towels.
Be ready: Know where your main shutoff is and make sure everyone in the house can find it.
This article is general information, not legal, tax, financial or inspection advice. Every home and situation is different, so confirm details with a licensed inspector, lender, attorney or tax professional.
David is a Greater Denver real estate advisor with eXp Realty and The Apollo Group (Colorado broker license FA100103211). He has closed more than $55 million in volume, earned eXp Icon status in 2025, and holds a 5.0 rating on Zillow from 27 verified reviews.