The short answer
How Freezing Water Creates Pressure
Water is unique because it expands when it freezes. Inside a pipe, this expansion has nowhere to go. The resulting pressure pushes outward on the metal, plastic, or copper with tremendous force. This stress can cause even a sturdy pipe to split open, often at a seam or a weak spot.
The pipe may not burst exactly where the ice block forms. Pressure can build up between an ice blockage and a closed faucet. This trapped liquid water is compressed, and the force can find a weak point downstream. That is why you might find a burst in a section of pipe that is not frozen solid.
Common Locations for Pipe Bursts
Some parts of your home are naturally colder than others. Pipes in these areas lose heat faster and are the first to freeze. Areas with little to no insulation provide no buffer against the cold. A small draft over many hours can drop the temperature around a pipe below freezing.
Knowing where your pipes are vulnerable helps you protect them. Check for drafts near plumbing in basements, attics, and garages. Seal any cracks or openings that let cold air in. Pay special attention to pipes that run along exterior walls, as they have only drywall between them and the outside.
- Unheated basements or crawl spaces where cold air circulates.
- Attics where insulation around pipes is missing or inadequate.
- Exterior walls where plumbing lines are vulnerable to outdoor temperatures.
- Garages or under kitchen sinks on an outside wall.
- Outdoor spigots and swimming pool supply lines.
- Any pipe run in an area that drops below freezing.
Preventing Frozen and Burst Pipes
The best defense is to keep pipes from freezing in the first place. Let a small trickle of water run from faucets connected to vulnerable pipes. Moving water is much harder to freeze. Keep your home's thermostat set to at least 55 degrees, even if you are away for a few days.
Insulate pipes in unheated areas with foam pipe sleeves or heat tape. Open cabinet doors under sinks to allow warm room air to circulate around the plumbing. If you live in Oklahoma City, know where your main water shutoff valve is. Turning off the water quickly can minimize damage if a pipe does burst.
What to Do When a Pipe Bursts
Your first action should be to stop the water flow. Locate your main water shutoff valve and turn it off immediately. This valve is usually where the water line enters your home, often in a basement, garage, or near the water heater. Once the water is off, you can assess the damage safely.
Then, call local water damage pros for help. They have the equipment to extract standing water and begin the drying process. While you wait, you can remove small items and furniture from the wet area. Do not attempt to use electrical appliances or outlets near the water.
The Role of Professional Restoration
After a burst pipe, hidden water is the real concern. Water soaks into walls, floors, and subfloors, creating a perfect environment for mold. Local water damage pros use tools like moisture meters and infrared cameras to find all the wet areas. This process, called moisture mapping, is essential for a complete dry-out.
They then use industrial air movers and dehumidifiers to remove moisture from the structure and air. This structural drying prevents secondary damage like warped floors and mold growth. The cleanup may involve removing damaged drywall or flooring. Their goal is to restore your home to a dry, safe condition.
Water damage does not wait
Call (405) 565-9833 any time, day or night, and describe what happened.
Call Now (405) 565-9833Frequently asked questions
Can a pipe burst without freezing first?
Yes, though it's less common. A sudden pressure surge from a water hammer event or extreme corrosion can cause a pipe to fail. However, the vast majority of winter pipe bursts are directly caused by the pressure from freezing and expanding water inside the pipe.
Will my homeowners insurance cover a burst pipe?
Most standard policies cover sudden, accidental water damage from a burst pipe. However, they often do not cover damage from lack of maintenance, like a pipe that froze because you left the heat off. Policies vary, and your insurer decides what is covered.
How long does it take to dry out after a burst pipe?
Drying times depend on the amount of water, the materials affected, and indoor humidity. A small, contained leak might dry in a few days. Extensive flooding in a basement or between walls can take a week or more of continuous professional drying.