How to Prevent Frozen Pipes in Colorado Winters

When temperatures in Fort Collins, Loveland, and across Northern Colorado drop below freezing, your water pipes are at risk. Water expands as it freezes, and the pressure can crack or burst pipes, causing thousands of dollars in water damage. The good news is that frozen pipes are almost entirely preventable with the right preparation. This guide covers what to do before, during, and after a freeze.

Key Takeaways

• Pipes freeze when exposed to temperatures below 20 degrees F for extended periods. Uninsulated pipes in garages, crawl spaces, and exterior walls are most vulnerable.
• A burst pipe can release 250+ gallons of water per hour, causing catastrophic damage to floors, walls, and belongings.
• Pipe insulation costs $0.50 to $2.00 per linear foot and takes minutes to install. It is the most cost-effective prevention measure.
• If a pipe does freeze, thaw it slowly with a hair dryer or warm towels. Never use a torch or open flame.

Which Pipes Are Most at Risk?

• Pipes in unheated spaces: Garages, crawl spaces, attics, and unfinished basements.
• Pipes in exterior walls: Especially on north-facing walls that get no sun exposure.
• Outdoor hose bibs and sprinkler lines: Any pipe with direct outdoor exposure.
• Pipes near windows or vents: Cold air drafts can drop local temperatures enough to freeze nearby pipes.

8 Ways to Prevent Frozen Pipes

1. Insulate Exposed Pipes

Foam pipe insulation sleeves are available at any hardware store for less than $2 per foot. Focus on pipes in the garage, crawl space, attic, and any exterior walls. For maximum protection in extremely cold areas, use heat tape (thermostatically controlled heating cable) under the insulation.

2. Disconnect and Drain Outdoor Hoses

Before the first freeze, disconnect all garden hoses from outdoor faucets. Drain the hose bibs by opening the outdoor valve and closing the indoor shut-off valve. If you have frost-free hose bibs, they still need the hose disconnected to drain properly.

3. Keep the Heat On

Never set your thermostat below 55 degrees F, even when you are away. If you are leaving for a winter vacation, keep the heat running. The cost of heating an empty house is far less than repairing burst pipe damage.

4. Open Cabinet Doors

During extreme cold snaps, open the cabinet doors under kitchen and bathroom sinks on exterior walls. This allows warm air from the room to reach the pipes behind the cabinets.

5. Let Faucets Drip

When temperatures drop below 20 degrees F, let faucets connected to vulnerable pipes drip slowly. Even a small flow of water prevents pressure buildup that causes pipes to burst. Focus on faucets served by pipes in exterior walls or unheated spaces.

6. Seal Air Leaks Near Pipes

Check for drafts around pipes where they enter the house through exterior walls. Seal gaps with caulk or spray foam. Even small openings can allow enough cold air to freeze a nearby pipe.

7. Insulate the Garage

If water supply lines run through your garage, keep the garage door closed as much as possible during cold weather. If your garage is uninsulated, consider adding insulation to the walls where pipes are located.

8. Know Where Your Main Shut-Off Valve Is

If a pipe does burst, you need to shut off the water supply immediately. Locate your main shut-off valve now (usually in the basement, crawl space, or utility closet) and make sure every adult in the household knows where it is and how to operate it.

What to Do If Your Pipes Freeze

1. Open the affected faucet. This allows water to flow once the ice begins to melt and relieves pressure in the pipe.
2. Apply heat to the frozen section. Use a hair dryer, heat lamp, or towels soaked in hot water. Start from the faucet end and work toward the frozen area.
3. Never use an open flame, propane torch, or heat gun. These can damage the pipe, start a fire, or cause steam explosions in the pipe.
4. Check for cracks or leaks. As the pipe thaws, watch for water escaping from cracks. If you see a leak, shut off the main water supply and call a plumber immediately.
5. If you cannot locate the frozen section or the pipe has burst, shut off the main water and call for emergency pipe repair.

Cost of Frozen Pipe Damage

Prevention is always the cheaper option. A $100 investment in insulation and preparation can save you $5,000 to $20,000 in emergency repairs and water damage restoration.

Frequently Asked Questions

At what temperature do pipes freeze? Pipes can freeze when temperatures drop below 20 degrees F for an extended period. Uninsulated pipes in exposed areas can freeze at higher temperatures if there is a wind chill or drafts.

How long does it take for pipes to freeze? In Northern Colorado, uninsulated pipes can freeze in as little as 4 to 6 hours when temperatures are below 20 degrees F. Insulated pipes can withstand much longer cold snaps without freezing.

Does homeowner’s insurance cover frozen pipe damage? Most policies cover sudden and accidental water damage from burst pipes, but they typically do not cover the pipe repair itself. Coverage may be denied if the insurer determines the homeowner was negligent (for example, leaving a vacant home unheated). Check your specific policy.

Should I call a plumber for frozen pipes? If you cannot locate the frozen section, if the pipe has burst, or if you are unable to thaw it safely, call a licensed plumber. They have the tools and experience to thaw pipes safely and repair any damage.