A burst pipe is one of the most stressful plumbing emergencies a homeowner can experience. In just a few minutes, a broken pipe can flood your home, damage walls and floors, ruin furniture, and create the perfect environment for mold growth. Knowing what to do when a pipe bursts can save you thousands of dollars in repairs and help protect your home.

In this guide, we’ll explain the immediate steps you should take, common causes of burst pipes, how to prevent future incidents, and when it’s time to call a professional plumber.

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What Causes a Pipe to Burst?

Pipes can burst for several reasons, including:

• Freezing temperatures causing water inside pipes to expand
• High water pressure placing excessive stress on plumbing
• Corrosion in older metal pipes
• Rust weakening the pipe walls
• Tree roots damaging underground pipes
• Poor installation or defective plumbing materials
• Accidental impact during construction or renovations
• Clogged pipes causing pressure buildup

Understanding the cause can help prevent future plumbing emergencies.

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Step 1: Shut Off the Main Water Supply

The very first thing you should do is stop the flow of water.

Locate your home’s main water shutoff valve and turn it off immediately. This prevents additional water from entering the damaged pipe and minimizes flooding.

Every homeowner should know where this valve is located before an emergency occurs.

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Step 2: Turn Off Electricity if Necessary

If water is approaching electrical outlets, appliances, or your breaker panel:

• Do not walk through standing water if electrical hazards exist.
• Turn off electricity only if it is safe to do so.
• If you’re unsure, contact your electric utility or emergency services.

Safety should always come first.

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Step 3: Drain the Plumbing System

After shutting off the water:

• Turn on all cold-water faucets.
• Flush toilets.
• Open outdoor spigots if available.

This helps relieve pressure inside the plumbing system and drains remaining water from the pipes.

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Step 4: Turn Off Your Water Heater

If your water heater continues operating without sufficient water, it could become damaged.

• Turn off electric water heaters at the breaker.
• For gas units, switch the gas control to the “Pilot” setting or turn it off according to the manufacturer’s instructions.

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Step 5: Contain the Leak

While waiting for repairs:

• Place buckets under leaking pipes.
• Use towels or mops to absorb water.
• Move furniture and electronics away from affected areas.
• Cover valuables with plastic sheeting.

The faster you remove water, the less damage your home will suffer.

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Step 6: Remove Standing Water Quickly

Standing water can cause serious damage within hours.

Use:

• Wet/dry vacuum
• Mop
• Towels
• Fans
• Dehumidifiers

Quick drying also reduces the risk of mold growth.

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Step 7: Document the Damage

Before cleaning everything up:

• Take photos
• Record videos
• Document damaged belongings

This information can help support insurance claims.

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Step 8: Call a Licensed Plumber

Temporary repairs may slow a leak, but a burst pipe usually requires professional repair or replacement.

A plumber can:

• Locate hidden damage
• Replace broken sections
• Check for additional weak pipes
• Test the plumbing system for leaks

Never ignore even a small pipe burst, as hidden leaks can lead to extensive structural damage.

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Temporary Emergency Fixes

If you must wait for a plumber, temporary fixes include:

• Pipe repair clamps
• Rubber patches secured with hose clamps
• Epoxy putty
• Plumbing repair tape

These should only be used as short-term solutions.

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Signs a Pipe May Burst Soon

Watch for these warning signs:

• Low water pressure
• Discolored water
• Strange banging or knocking noises
• Visible corrosion
• Water stains on walls or ceilings
• Unexplained increases in your water bill
• Damp spots on floors

Addressing these issues early can prevent a plumbing emergency.

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How to Prevent Burst Pipes

Preventive maintenance goes a long way.

Insulate Exposed Pipes

Protect pipes in:

• Basements
• Crawl spaces
• Attics
• Garages

Pipe insulation helps prevent freezing during winter.

Keep Your Home Warm

During freezing weather:

• Maintain indoor temperatures above 55°F (13°C), even when away.
• Open cabinet doors beneath sinks to allow warm air to circulate.

Let Faucets Drip

A slow drip during extremely cold weather helps reduce pressure buildup inside pipes.

Check Water Pressure

Household water pressure should generally stay between 40 and 60 PSI. Excessively high pressure can shorten the life of your plumbing system.

Replace Aging Pipes

Older galvanized steel pipes are more susceptible to corrosion and bursting than modern copper or PEX plumbing.

Schedule Routine Plumbing Inspections

Professional inspections can identify worn pipes before they fail.

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Can Homeowners Insurance Cover Burst Pipes?

Many homeowners insurance policies cover sudden and accidental pipe bursts.

Coverage may include:

• Water damage
• Drywall repairs
• Flooring replacement
• Personal belongings
• Mold remediation (depending on the policy)

However, damage caused by neglect or lack of maintenance may not be covered.

Always review your specific insurance policy.

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When Should You Call a Professional Immediately?

Contact a plumber immediately if:

• The pipe has completely burst
• Water is flooding your home
• You cannot locate the shutoff valve
• Multiple pipes are leaking
• You suspect hidden water damage
• Water is leaking near electrical systems

Quick professional repairs can significantly reduce long-term damage.

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Final Thoughts

A burst pipe can quickly become a costly disaster, but knowing how to respond can greatly reduce the damage. Shutting off the water, protecting your belongings, removing standing water, and contacting a qualified plumber are the most important steps to take. Regular plumbing maintenance, proper insulation, and monitoring your home’s water pressure can help prevent burst pipes before they happen.

Being prepared today can save you significant time, money, and stress if a plumbing emergency ever occurs.

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Frequently Asked Questions

How long does it take for a burst pipe to cause damage?

Water damage can begin within minutes, while mold may start developing within 24 to 48 hours if moisture is not removed.

Can I repair a burst pipe myself?

Temporary repairs are possible, but permanent repairs should usually be completed by a licensed plumber to ensure the system is safe and reliable.

What is the most common cause of burst pipes?

Freezing temperatures are one of the leading causes, though corrosion, aging pipes, high water pressure, and physical damage are also common.

Should I turn off my water heater after a pipe bursts?

Yes. Once the main water supply is shut off, turn off your water heater to help prevent damage to the unit.

Can burst pipes lead to mold?

Yes. Excess moisture can allow mold to grow within 24 to 48 hours if the affected area is not dried thoroughly.

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