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Why Do More Pipe Bursts Happen in January and February?

Last updated October 31, 2026

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The short answer

The Physics of Freezing Water

Water is unique because it expands when it freezes. Inside a pipe, this expansion is confined, creating pressure that pushes outward in all directions. Metal or plastic pipes can only withstand so much force before they fail. This pressure, not just the cold itself, is the primary reason pipes crack or burst during a freeze. The risk is highest during prolonged cold snaps when pipes are exposed to sub-freezing temperatures for many hours.

Common Locations for Vulnerable Pipes

Pipes in unheated spaces are most at risk. This includes lines in attics, crawl spaces, garages, and inside exterior walls. Pipes running along an outside wall in a kitchen or bathroom are also vulnerable. Even a small gap in your home's insulation can let in enough cold air to freeze a water line overnight. Utility rooms with poor heating are other common problem areas for frozen pipes. In some regions, pipes in uninsulated slab foundations can be particularly susceptible to sudden temperature drops.

Preventing Frozen Pipes in Your Home

You can take several steps to prevent this common winter problem. Keep your home's thermostat set to at least 55 degrees, even when you are away. Open cabinet doors under sinks to let warm air circulate around pipes. Let a trickle of cold water drip from faucets connected to vulnerable lines during extreme cold spells. For longer absences, you might consider draining your home's plumbing system entirely to remove all water from the lines. These actions help by keeping water moving and preventing it from reaching freezing temperatures in vulnerable spots.

  • Insulate exposed pipes in attics, crawl spaces, and other unheated areas with foam sleeves.
  • Seal cracks and openings in walls and foundations where cold air enters.
  • Disconnect and drain outdoor garden hoses before winter.
  • Know the location of your main water shutoff valve.
  • If you plan to be away, consider draining your home's water system.
  • Never use an open flame to thaw a frozen pipe.

What to Do When a Pipe Bursts

Your first action is to shut off the main water supply to stop the flow. Move furniture and belongings away from the water if it is safe to do so. You should also turn off electricity to the affected area if any wiring or outlets are near standing water. The faster you act, the better your chance of limiting secondary damage like mold and structural rot. After securing the area, you can contact local water damage pros to assess the situation and begin the necessary cleanup and drying process. Acting quickly helps control the extent of the damage.

Addressing the Damage After a Burst

Water from a burst pipe can soak walls, floors, and personal items. The pros will first extract standing water. They then use specialized equipment like air movers and dehumidifiers to remove moisture from the air and materials. A critical step is checking for hidden dampness behind walls or under flooring. This thorough drying is essential to prevent mold, which can start growing within 24 to 48 hours in damp conditions. The process also helps preserve your home's structural integrity by preventing wood rot and other long-term damage. Proper drying techniques protect both your belongings and the building's frame.

  • Extract standing water with powerful truck-mounted or portable pumps.
  • Use moisture meters and infrared cameras to map all affected areas.
  • Set up industrial air movers and dehumidifiers to dry the structure.
  • Remove and dispose of damaged materials like soaked drywall or insulation.
  • Clean and sanitize affected surfaces to prevent microbial growth.
  • Monitor humidity and moisture levels until the space is completely dry.

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Water keeps spreading into floors and walls, so it is worth acting early. Calls are answered 24/7.

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Frequently asked questions

Can a pipe burst even if it hasn't frozen solid?

Yes. A partial ice blockage can create enough pressure upstream to cause a rupture. The burst often happens between the blockage and a closed faucet, where pressure has no escape. This is why even a slight freeze can lead to major water damage.

Does homeowners insurance cover burst pipe damage?

Many standard policies cover sudden, accidental water discharge from a burst pipe. However, coverage for the pipe repair itself may vary. Policies vary, and your insurer decides what is covered. Always check your specific policy and report the damage promptly.

How long does it take to dry a home after a pipe burst?

Drying time depends on the amount of water, the materials affected, and indoor humidity. A small, contained leak may dry in a few days. Extensive flooding that soaks walls and subfloors can take a week or more with professional drying equipment running continuously.

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