How to Prepare Your Plumbing for Winter Freezes

Winter can sneak up on your plumbing like a cold snap out of nowhere. One night, everything’s fine. The next, you wake up to a burst pipe and a flooded floor. No one wants that kind of surprise.

At Matrix Plumbing, we’ve seen how winter freezes turn small issues into big emergencies. We know the headaches, the costs, and the stress. But with a little preparation, you can keep your plumbing safe, dry, and running smoothly—even when temperatures drop below freezing.

Why Winter Freezes Threaten Plumbing ❄️

Cold weather is more than just a shiver down your spine. When temperatures plummet, water inside your pipes can freeze. Frozen water expands—like a soda can left in the freezer—putting pressure on your pipes from the inside. That’s when cracks form, joints split, and water starts pouring out as soon as things thaw.

Common Freeze-Related Damages

• Burst Pipes: The most dramatic—and expensive—result. Water expands as it freezes, splitting pipes wide open.
• Hidden Leaks: Not all damage is obvious. Hairline cracks can leak slowly, causing mold, rot, and structural damage.
• Clogged Drains: Ice can block drains, leading to backups or slow drainage.
• Water Heater Strain: Cold water makes your heater work overtime, risking breakdowns.
• Fixture Damage: Outdoor faucets, hose bibs, and exposed fixtures are especially vulnerable.

According to the International Association of Certified Home Inspectors (InterNACHI), pipes can burst when temperatures drop below 20°F. But even a brief cold snap can cause trouble if pipes aren’t protected.

Step-by-Step Winter Plumbing Preparation

Getting ready for winter isn’t complicated, but it does take a little time and attention. Think of it as putting a coat and boots on your plumbing.

1. Insulate Exposed Pipes

Wrap foam pipe insulation around any pipes in unheated spaces—garages, basements, crawl spaces, and attics. For extra cold-prone spots, use heat tape (UL-listed for safety). Don’t forget pipes under sinks along exterior walls.

2. Shut Off and Drain Outdoor Faucets

• Disconnect hoses and drain them.
• Shut off the water supply to outdoor faucets, then open the faucet to let any remaining water drain.
• Consider frost-proof hose bibs for extra protection.

3. Seal Gaps and Cracks

Cold air loves to sneak in through tiny gaps. Use caulk or expanding foam to seal cracks around pipes where they enter walls or foundations.

4. Check for Leaks

Small leaks become big problems in freezing weather. Inspect under sinks, around water heaters, and along exposed pipes. If you spot moisture or corrosion, call a plumber before winter sets in.

5. Keep Interior Temperatures Consistent

Set your thermostat to at least 55°F, even if you’re away. Open cabinet doors under sinks to let warm air circulate around pipes.

6. Service Water Heaters and Boilers

Schedule maintenance to ensure your water heater or boiler can handle winter’s demands. Sediment buildup or faulty parts can lead to breakdowns when you need hot water most.

7. Know Your Main Shut-Off Valve

If a pipe does burst, you’ll need to shut off your water fast. Make sure everyone in your household or business knows where the main valve is and how to use it.

Emergency Signs of Frozen Pipes 🚨

Sometimes, despite your best efforts, pipes freeze. Early detection can save you thousands in repairs. Watch for these warning signs:

• No water or reduced flow: If you turn on a faucet and only a trickle comes out, a pipe may be frozen.
• Frost on pipes: Visible frost or condensation on exposed pipes is a red flag.
• Strange odors: Blocked pipes can force unpleasant smells back up into your home.
• Bulging or cracked pipes: Any visible swelling or cracks mean it’s time to act—fast.

If you suspect a frozen pipe, don’t wait. Thaw it carefully with a hair dryer (never an open flame), starting at the faucet and working back toward the frozen section. If you can’t locate the freeze or if a pipe has burst, call for emergency plumbing help right away.

When to Call a Professional

DIY can only take you so far. Some situations call for a professional touch:

• You can’t find the frozen section.
• Pipes are already cracked or leaking.
• There’s water pooling, dripping, or flooding.
• You smell gas near your plumbing (this could signal a gas line issue).
• Your water heater or boiler isn’t working after a freeze.

Professional plumbers use specialized equipment—like thermal imaging cameras and pipe thawing machines—to locate and fix problems quickly and safely. They also know local plumbing codes and safety standards, ensuring repairs are up to par.

At Matrix Plumbing, our team is ready 24/7 for emergency plumbing calls. We’re equipped to handle everything from burst pipes to water heater failures, day or night.

Practical Tips for Ongoing Prevention

Winter plumbing prep isn’t a one-time job. Keep these habits in mind all season:

• Run a trickle of water: On the coldest nights, let faucets drip slightly to keep water moving.
• Check insulation after storms: Heavy snow or wind can dislodge pipe insulation.
• Schedule annual inspections: Preventative maintenance catches small issues before they escalate.
• Test your sump pump: If you have one, make sure it’s working before snow melts.

Refer to the Uniform Plumbing Code (UPC) and manufacturer guidelines for best practices on insulation and maintenance.

Costs and Time Factors

Prepping your plumbing for winter is an investment in peace of mind. Here’s what to expect:

• Pipe insulation: Materials are affordable, and most homes can be insulated in a few hours.
• Outdoor faucet prep: Shutting off and draining faucets takes less than an hour.
• Professional inspections: Annual checkups usually take 1–2 hours, depending on your property size.
• Emergency repairs: These can be costly, especially if water damage occurs. Prevention is almost always cheaper than cleanup.

Remember, every property is different. Older buildings or those with extensive outdoor plumbing may take more time and effort.

When It’s an Emergency

Not every plumbing problem can wait. Call for emergency plumbing help if:

• Water is actively leaking, flooding, or pooling inside.
• You lose all water pressure or supply.
• Major fixtures (toilets, water heaters, boilers) stop working suddenly.
• You suspect a gas leak or smell rotten eggs near plumbing.

In these moments, quick action makes all the difference. Shut off your main water supply and call Matrix Plumbing immediately.

Frequently Asked Questions

What temperature do pipes freeze at?

Pipes can begin to freeze when temperatures drop below 20°F, but poorly insulated pipes may freeze at higher temperatures, especially during sudden cold snaps.

Can I use a space heater to thaw frozen pipes?

A space heater can help warm the area around pipes, but never leave it unattended or use it near flammable materials. For direct thawing, use a hair dryer or call a plumber for safe, effective solutions.

How do I know if my pipes are properly insulated?

Check that all exposed pipes in unheated areas are covered with foam sleeves or wrap. If you’re unsure, a professional inspection can identify gaps or weaknesses.

Is preventative maintenance really necessary every year?

Yes—regular inspections and maintenance help catch small issues before they turn into emergencies, especially as pipes age or insulation wears out.

Special Considerations for Winter Plumbing

• Older homes: May have less insulation and more vulnerable pipes.
• Businesses with extended closures: Keep heat on and have someone check the property during cold spells.
• Properties with crawl spaces or attics: These areas need extra attention, as they’re often colder.
• Gas appliances: Schedule gas safety checks before winter to ensure everything operates safely.

Winter is tough enough without plumbing surprises. Take these steps now, and you’ll be ready for whatever the season brings.

Call Matrix Plumbing now — or reach us anytime at  855-506-6855 .