How to Prevent a Burst Pipe During Cold Weather 

3/21/2025

A burst pipe can cause extensive water damage, costly repairs, and major disruptions to your home. When temperatures drop, water inside your pipes can freeze and expand, creating immense pressure. If the pipe cannot handle the expansion, it may rupture, leading to leaks or even severe flooding. This kind of damage can happen quickly, often before homeowners realize there’s an issue.

In areas like Myrtle Beach, SC, winter temperatures may not be as extreme as in northern states, but unexpected cold snaps still pose a threat to plumbing systems. Many homes in the region have pipes that aren’t designed for prolonged freezing temperatures, making them more vulnerable when a sudden freeze occurs. Without proper precautions, a single night of freezing weather could lead to a burst pipe, causing thousands of dollars in damage.

At Benjamin Franklin Plumbing of Myrtle Beach, SC, we understand the importance of protecting your plumbing during winter. Taking preventive measures before temperatures drop is the best way to avoid frozen pipes and costly repairs. In this guide, we’ll cover why pipes freeze, how to prevent them from bursting, and what to do in case of an emergency. By following these expert tips, you can safeguard your home and enjoy peace of mind throughout the colder months.

Why Do Pipes Burst in Cold Weather?

A burst pipe is one of the most common plumbing emergencies during winter. But why does this happen? The answer lies in how water reacts when temperatures drop below freezing.

Water expands when it freezes, by nearly 10%. This expansion creates intense pressure inside a pipe, especially in sections where water has nowhere to go. If the pressure becomes too great, the pipe can crack or rupture, leading to leaks or even severe flooding once the ice thaws. Pipes made from various materials, including copper, PVC, and even flexible PEX, are all at risk of damage.

Certain pipes are more vulnerable than others. Exposed pipes in unheated areas, such as attics, basements, crawl spaces, and exterior walls, are at the highest risk. Homes in Myrtle Beach, SC, may not experience extreme winters, but occasional cold snaps can still threaten plumbing systems, especially in homes that aren’t insulated for freezing weather. Even buried pipes can be at risk if temperatures drop low enough to freeze the ground to the frost line.

Several warning signs indicate a pipe may be freezing. These include low water pressure, unusual banging or whistling noises from the plumbing system, and visible frost on exposed pipes. In severe cases, a pipe may completely block water flow, increasing the chances of bursting when the ice eventually melts. By recognizing these early signs and understanding the risks, homeowners can take preventive steps to avoid costly damage and emergency plumbing repairs.

Signs of a Frozen Pipe

Recognizing the early signs of a frozen pipe can help homeowners take action before it bursts. When temperatures drop, pipes can freeze within hours, especially if they are uninsulated or located in unheated areas. Knowing what to look for can prevent costly water damage and emergency plumbing repairs.

One of the first warning signs is reduced water pressure or no water coming from the faucet. If you turn on a tap and only a trickle comes out, the pipe feeding that fixture may be frozen. Another sign is frost or condensation forming on exposed pipes. This indicates that the pipe’s temperature has dropped dangerously low, increasing the risk of freezing.

Homeowners may also hear strange noises from their plumbing system. A whistling or banging sound when turning on a faucet could mean that ice is partially blocking the pipe. Additionally, a strong odor coming from drains might signal a frozen pipe in the sewer or vent lines, preventing normal airflow.

If any of these signs appear, it’s crucial to act quickly. Taking preventive measures, like warming the affected area, can help reduce the risk of a burst pipe. Ignoring these warning signals could lead to more serious issues, such as leaks, structural damage, and expensive repairs.

How to Insulate to Prevent Burst Pipe

Proper insulation is one of the most effective ways to prevent a burst pipe during cold weather. When pipes are well-insulated, they retain heat better, reducing the risk of freezing and potential damage. Homeowners in Myrtle Beach, SC, may not experience severe winters, but even brief cold snaps can expose plumbing to freezing temperatures. Since many homes in the region aren’t built for extended cold weather, taking preventive steps now can save time, money, and stress later.

There are several insulation materials available, each with unique benefits. Foam pipe sleeves are affordable and easy to install, making them a popular choice for protecting exposed pipes. Fiberglass insulation wraps provide a thicker layer of protection and are ideal for pipes exposed to extreme cold. For areas where pipes are more vulnerable, heat tape or heat cables offer an added layer of defense by using an electric heating element to maintain warmth.

Knowing which pipes to insulate is just as important as selecting the right materials. Pipes located in attics, basements, crawl spaces, garages, and along exterior walls are at the highest risk of freezing. These areas are often colder than the rest of the house, making insulation essential. Additionally, outdoor plumbing, such as hose bibs, sprinkler systems, and pool lines, should be insulated or properly winterized to prevent freezing and damage.

Keeping Your Home Warm to Protect Pipes

Maintaining a warm indoor temperature is crucial in preventing a burst pipe during cold weather. Even in Myrtle Beach, SC, where winters are generally mild, sudden temperature drops can put pipes at risk. When indoor temperatures fall too low, uninsulated or exposed pipes can freeze, increasing the chances of a rupture once the ice thaws.

One of the simplest ways to protect your plumbing is to keep your home’s thermostat set to at least 55°F, even when you’re away. Consistent heating prevents pipes from reaching freezing temperatures, especially in unoccupied areas like basements and crawl spaces. If possible, setting the thermostat slightly higher at night can offer extra protection during the coldest hours.

Another effective strategy is to keep cabinet doors open in kitchens and bathrooms. This allows warm air to circulate around pipes under sinks, reducing the risk of freezing. Homeowners can also use space heaters in areas prone to cold drafts, such as garages, attics, or poorly insulated rooms. However, space heaters should be used safely, with proper clearance from flammable materials.

For added protection, sealing drafts around doors and windows can help maintain indoor warmth. Using weatherstripping, caulk, or insulation film minimizes heat loss and prevents cold air from reaching vulnerable pipes. Additionally, allowing warm air to circulate throughout your home by keeping interior doors open can help regulate temperature evenly.

Letting Faucets Drip: Does It Help?

One simple yet effective way to prevent a burst pipe in cold weather is to let faucets drip. While it may seem like a waste of water, a slow and steady trickle can keep water moving through the pipes, reducing the risk of freezing. This small action can make a big difference, especially during sudden temperature drops in Myrtle Beach, SC.

Running water is less likely to freeze because the movement prevents ice from forming inside the pipe. Even if temperatures dip below freezing, the constant flow helps relieve pressure buildup. Since high pressure inside a frozen pipe is what causes it to burst, keeping a small stream of water running can prevent costly damage.

Not all faucets need to be left dripping. Homeowners should focus on pipes along exterior walls, in unheated areas, and those connected to outdoor plumbing. It’s best to turn on both the hot and cold taps slightly, as this keeps both supply lines moving.

A common concern is water waste, but the amount used is minimal compared to the cost of repairing water damage from a burst pipe. To reduce waste, homeowners can collect the dripping water in a container and use it for household tasks like watering plants or cleaning.

Letting faucets drip is a simple yet effective strategy that provides extra protection for vulnerable pipes. When combined with insulation and maintaining indoor warmth, it becomes a key step in preventing plumbing disasters during cold weather.

Outdoor Pipes and Hose Bibs: Winterizing Tips

Outdoor plumbing is especially vulnerable to freezing temperatures, making winterization essential to prevent a burst pipe. Even in Myrtle Beach, SC, where winters are relatively mild, unexpected cold snaps can cause outdoor pipes to freeze and burst. A burst pipe in an exterior plumbing line can lead to severe water damage, costly repairs, and even structural issues if not addressed quickly. Properly preparing your exterior plumbing before winter can help you avoid the stress and expense of dealing with a burst pipe.

The first step in protecting outdoor pipes is disconnecting garden hoses from outdoor faucets, also known as hose bibs. When a hose remains attached, water can become trapped inside, increasing the risk of freezing and expanding into the connected pipe. After disconnecting hoses, drain any remaining water and store them indoors until warmer weather returns.

Next, shut off the outdoor water supply if possible. Many homes have a dedicated shut-off valve for exterior faucets. After turning it off, open the outdoor spigots to allow any leftover water to drain out. This prevents water from sitting inside the pipe, where it could freeze and cause a rupture.

For extra protection, installing insulated faucet covers on hose bibs can help retain heat and shield them from cold air. These covers are inexpensive and easy to attach, making them a simple yet effective solution. If your home has exposed outdoor pipes, wrapping them with foam insulation, fiberglass sleeves, or heat tape adds another layer of defense against freezing.

What to Do If a Pipe Freezes

Even with proper precautions, pipes can still freeze during extreme cold. Taking quick action can prevent a burst pipe and minimize damage to your home. Knowing how to safely thaw a frozen pipe can make a big difference in avoiding costly plumbing repairs.

The first step is to identify the frozen pipe. If you turn on a faucet and only a trickle or no water comes out, a pipe in that section of the plumbing system is likely frozen. Check exposed pipes for signs of freezing, such as frost buildup, bulging, or condensation. If the pipe is hidden behind a wall, you might hear unusual noises like banging or cracking when you turn on the tap.

Once you locate the frozen section, open the affected faucet to relieve pressure. This allows water to flow once the ice melts. Next, gradually warm the pipe using a safe heat source. You can use a hairdryer, heating pad, or space heater to apply heat. Start warming the pipe near the faucet and work your way toward the frozen area to help melting ice escape.

Avoid using open flames, torches, or high-heat devices, as they can damage the pipe or create a fire hazard. If the frozen pipe is behind a wall, turn up the home’s thermostat, open cabinet doors, or use an infrared heater to warm the area.

Emergency Steps If a Pipe Bursts

A burst pipe can cause severe water damage in a short amount of time. If a pipe in your home bursts, taking immediate action can help minimize the damage and protect your property. Knowing the right emergency steps can prevent further issues and allow for quicker repairs.

Shut Off the Water Supply Immediately

The first and most important step in handling a burst pipe is shutting off the main water supply. This will stop water from flowing and reduce the amount of flooding in your home. The main shut-off valve is typically located in a basement, crawl space, garage, or outside near the water meter. If you don’t know where yours is, it’s a good idea to locate it before an emergency happens.

Turn Off Electricity in Affected Areas

If water from the burst pipe is near electrical outlets, appliances, or the breaker box, shut off power to the affected area. This helps prevent electrical hazards and reduces the risk of short circuits or fires. If you’re unsure whether water has reached any wiring, it’s best to call a professional electrician for safety.

Drain Remaining Water from Pipes

After shutting off the main water supply, open all faucets and flush toilets to drain the remaining water from your plumbing system. This relieves pressure in the pipes and helps prevent additional leaks. If possible, mop up standing water quickly to reduce the risk of structural damage and mold growth.

Temporarily Contain the Leak

If the burst pipe is visible, try to contain the leak with a rubber patch, pipe clamp, or heavy-duty tape until a professional plumber can make repairs. While this won’t be a permanent fix, it can help reduce water damage. If the pipe is hidden behind walls or ceilings, look for water stains, bulging drywall, or dripping sounds to locate the leak.

Call a Professional Plumber Immediately

A burst pipe requires professional repair to prevent further issues. Contact Benjamin Franklin Plumbing of Myrtle Beach, SC as soon as possible to assess the damage and replace the affected pipe. Even a small burst can weaken your plumbing system, so it’s essential to have an expert inspect for additional vulnerabilities.

By acting quickly, you can reduce the impact of a burst pipe and avoid costly water damage. Preventive maintenance and proper winterization are the best ways to protect your plumbing and ensure your home stays safe during cold weather.

FAQ: Preventing & Handling Burst Pipes

1. How cold does it have to be for pipes to freeze and burst?

Pipes begin to freeze when temperatures drop to 32°F (0°C), but the risk of a burst pipe increases when temperatures fall below 20°F (-6°C). Homes in Myrtle Beach, SC, may not face prolonged freezing temperatures, but even a single cold night can cause unprotected pipes to freeze and burst.

2. Should I leave my heat on if I’m away during winter?

Yes, keeping your thermostat set to at least 55°F when you’re away helps prevent a burst pipe. Turning off the heat completely increases the risk of frozen pipes, especially in unheated areas like basements and crawl spaces.

3. Can I use a hairdryer to thaw a frozen pipe?

Yes, using a hairdryer, heating pad, or space heater can safely thaw a frozen pipe. However, never use an open flame, blowtorch, or propane heater, as these can damage pipes or start a fire. If a pipe remains frozen despite your efforts, call a plumber to prevent a burst pipe.

4. How do I know if a pipe burst behind a wall?

Signs of a hidden burst pipe include water stains, bulging drywall, a musty smell, or unexplained increases in your water bill. If you hear dripping sounds behind walls or notice water pooling in unusual places, shut off the water supply and call a professional immediately.

5. Will my homeowner’s insurance cover a burst pipe?

Most homeowner’s insurance policies cover damage from a burst pipe, but coverage may depend on whether proper maintenance was performed. Insurers may deny claims if the homeowner neglected to insulate pipes or keep the home heated during freezing temperatures. Always check your policy and take preventive measures to reduce risk.