Winterizing Your Home: The Checklist That Prevents the Expensive Calls
2 min read · Last reviewed March 2026
Nearly every emergency winter repair call traces back to one of about eight jobs that didn't get done in fall.
Winterizing isn't one job, it's a short list of unrelated tasks that each prevent a specific, common failure — frozen pipes, ice dams, drafts, and outdoor spigot cracking chief among them. None takes more than an hour.
Plumbing
- Disconnect and drain garden hoses, then shut off and drain any exterior hose bibs — a hose left attached traps water in the spigot and is a leading cause of cracked outdoor faucets.
- Insulate exposed pipes in unheated spaces: crawl spaces, garages, and attic runs.
- Know where the main water shutoff is before you need it in an emergency.
- Let faucets drip during extreme cold snaps if pipes run through an exterior wall.
Roof and gutters
Clean gutters fully before the first freeze — clogged gutters are the direct cause of most ice dams, since trapped water backs up under shingles when it refreezes. Check attic insulation and ventilation too; a warm, poorly ventilated attic melts roof snow unevenly and is the other major driver of ice dams.
Sealing and insulation
| Area | Fix | Why it matters |
|---|---|---|
| Windows and doors | Weatherstripping, caulking gaps | Drafts here can be a significant share of winter heat loss |
| Attic hatch | Insulated cover or weatherstripped seal | Often the single largest uninsulated gap in a home |
| Outlets on exterior walls | Foam gasket inserts | Small but easy and cheap to fix |
| Dryer and exhaust vents | Check flapper seals close fully | Prevents cold air infiltration and pest entry |
Outdoor and structural
- Trim tree branches that could break under ice or snow load and hit the roof or power lines.
- Store or cover patio furniture and grills to prevent moisture damage and rust.
- Check that downspouts direct water at least a few feet away from the foundation, since freeze-thaw cycling near the foundation can worsen cracks.
- Service the furnace or heat pump before the season starts, not after the first cold snap when service backlogs are longest.
A one-day order of operations
- Morning: clean gutters and check the roof for the season.
- Midday: drain and store hoses, shut off exterior spigots.
- Afternoon: caulk and weatherstrip doors and windows.
- End of day: schedule furnace service if not already done, and set the thermostat schedule.
What temperature causes pipes to freeze?
Risk rises sharply once sustained temperatures drop below about 20°F, especially for pipes in unheated or exterior-wall locations without insulation.
Do I need to winterize if I live in a mild climate?
A shortened version, yes — hose disconnection and gutter cleaning matter almost everywhere; pipe insulation and heavy weatherstripping matter less where hard freezes are rare.
Run the numbers for your own project
- Gutter and Downspout CalculatorHow much gutter and how many downspouts does my roof need?
- Project Cost EstimatorWhat will this project cost me?
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