Reviewed by Tyler Bennett, Restoration Project Manager, IICRC WRT/ASD #291438, October 2026.
Short answer: Utah winter brings two separate water damage threats: freezing pipes (burst and flood) and condensation-driven mold. A short checklist in October-November prevents the first; monitoring humidity in December-March catches the second. This page gathers the full seasonal checklist, the “what to do if” guidance, and the specific services we handle through winter.
The two winter threats in Utah homes
Spanish Fork winter temperatures regularly drop below 20F, the point at which uninsulated interior supply lines can freeze. The water that bursts the pipe does not come from the ice itself — it builds in the trapped water between the ice plug and a closed faucet. When that pressure exceeds pipe tolerance, it ruptures.
Lines most at risk: hose bibs on exterior walls, lines in uninsulated garages or crawlspaces, supply lines in exterior walls, water heater supply in uninsulated utility rooms.
In winter, sealed homes with warm humid interior air (showers, cooking, breathing, laundry) have less ventilation to clear moisture. That humid air hits cold surfaces (exterior walls, uninsulated attic hatches, cold basement walls) and condenses. Over weeks of this cycle, liquid water accumulates in cavities and mold grows.
Mold growth sites: attic sheathing above bathrooms, inside north-facing exterior wall cavities, around windows that condense, in basements where humidity stays above 50%.
Pre-winter checklist (October-November)
- Shut off and drain hose bibs. Disconnect garden hoses, close interior shutoffs for hose bibs if you have them, drain the exterior line.
- Insulate exposed pipes. Foam pipe insulation on supply lines in garages, crawlspaces, and against exterior walls. Cheap, 15 minutes per line, prevents freeze.
- Check attic ventilation. Verify bath fans vent through the roof or wall (not into the attic), that soffit vents are not blocked by insulation, and that ridge or gable vents are clear.
- Clean window well drains and verify covers. Clogged drains overflow during snowmelt.
- Clean gutters. Clogged gutters cause ice dams, which push water into attics.
- Service your sump pump. Test with a bucket of water. Battery backup? Test the battery.
- Know where your main water shutoff is. Walk your family through it. In a burst, you may have minutes to find it.
- Install Wi-Fi leak sensors under sinks, behind the washer, at the water heater. $15-$30 each.
- Set a basement hygrometer. Watch for humidity creeping above 50%.
During-winter checklist (December-March)
- Keep heat at 55F minimum throughout the house, including rooms you do not use.
- Open under-sink cabinet doors on exterior walls during cold snaps so heat reaches pipes.
- Drip faucets during cold snaps. A slow trickle on faucets fed by vulnerable lines prevents the ice plug from forming.
- Run bath fans for 20-30 minutes after showers to clear humidity.
- Use kitchen exhaust during and after cooking.
- Avoid drying laundry indoors — it releases pints of water into the air.
- Watch for window condensation. Chronic window condensation means interior humidity is too high. Run a dehumidifier.
- Shut off water at the main before any trip over 3 days.
- Have someone check the house every 2-3 days during long trips.
If a pipe bursts this winter
- Shut off the main water valve. Open the lowest faucet to drain pressure.
- Cut power at the breaker to any wet rooms.
- Call 4Sure at (385) 247-9387. Live-answered 24/7, 45-minute arrival in Spanish Fork.
- Move what you can off the water. Photograph everything.
Winter-season services
- Burst pipe water damage — the most common winter call
- Water heater failure cleanup
- Ceiling leak repair — from ice damming
- Attic mold remediation — from winter condensation
- Basement mold remediation — found in spring, started in winter
Related reading
- Frozen pipe prevention tips for Utah winters
- Winter mold prevention for Utah homes
- Water damage during vacation
- How much humidity is too much in a Utah basement
Call (385) 247-9387. 24/7 live-answered, 45-minute arrival inside Spanish Fork.
Holiday season coming. See holiday fire safety for Utah homes — Thanksgiving cooking, Christmas trees, candles, fireplaces, holiday travel. Thanksgiving is the single highest-risk day of the year for home cooking fires.