How to Winterize Your Plumbing System to Avoid Frozen Pipes

Trevor Harvey • October 15, 2025

When winter temperatures begin to fall, your plumbing system becomes vulnerable to one of the most common cold-weather disasters: frozen pipes. These are more than just a simple inconvenience. If they burst, it can cause major water damage, costly repairs, and serious disruption to the daily life within your home. According to the Insurance Institute for Business & Home Safety, burst pipes are one of the leading causes of property damage during the winter, with cleanup and repairs often totaling thousands of dollars.

The good news? Most frozen pipe issues are completely preventable with proper winterization. Colorado is an area where freezing temperatures can hit at any time, meaning it’s important to take the proper steps to protect your plumbing in Denver. Getting this protective winterization in place before the cold sets in is essential. Knowing why pipes freeze, what areas of your plumbing is at risk, and the step-by-step process to winterize your home can prevent frozen pipes going forward.

Why Frozen Pipes Are Dangerous

Understanding why pipes freeze and the risks involved helps highlight why winterization matters. When water freezes it expands by almost 10 percent. In a sealed pipe, this expansion creates immense pressure that can split even metal pipes. Once the ice melts, the water starts flowing again – and any crack or rupture turns into a leak or full-blown flood.

Burst pipes are one of the most common problems caused by frozen pipes, leading to extensive water damage. The lingering moisture after one of these leaks can also lead to mold growth. Water bills typically increase due to hidden leaks, which can also lead to structural damage to drywall, flooring, and even foundations. Sometimes you can even lose water service until repairs are made. Even a small crack in a pipe can release hundreds of gallons of water per day. Taking preventative action is far less expensive and stressful than dealing with an emergency repair later.

Which Pipes Are Most at Risk?

Not every pipe in your home has an equal chance of freezing. The most vulnerable pipes are those located in unheated or poorly insulated areas. Identifying these spots is the first step to protecting your plumbing system. Outdoor plumbing and exterior walls are high-risk areas. Garden hoses, hose bibs, sprinkler systems, and pool lines can all freeze, as can pipes that run along walls facing outside –especially if insulation is lacking.

Basements and crawl spaces are often cooler and drafty, making them a common problem area. Attics and garages also tend to have pipes exposed to outside air or poorly heated spaces. Cabinet pipes, such as those under kitchen or bathroom sinks, can be problematic, especially if they’re on exterior walls. If you know where your water lines run, focus your winterization efforts there. If you’re unsure, a plumber can help locate and assess vulnerable areas.

Winterizing Step 1: Disconnect

Outdoor plumbing is the first place you should focus when winterizing. Disconnect all garden hoses and store them indoors to prevent ice damage. Shut off the water supply to outdoor spigots using the interior shut-off valve (often located in the basement or utility room). Drain faucets completely by opening them and letting any remaining water run out. Install insulated faucet covers to add extra protection against freezing temperatures. If you have a sprinkler or irrigation system, follow the manufacturer’s instructions to drain and blow out the lines – or hire a professional to prevent damage.

Winterizing Step 2: Insulate & Seal

Adding insulation to vulnerable pipes helps them retain warmth and prevent freezing. Use foam pipe insulation sleeves, which are inexpensive and easy to install. For extremely cold areas, consider heat tape or heat cables that plug into an outlet and keep pipes warm. Focus on pipes in basements, crawl spaces, attics, and along exterior walls. Don’t forget short sections under sinks or near garage walls, which are common trouble spots. Insulating pipes also makes your home more energy efficient by reducing heat loss.

Also make sure to seal any drafts and/or air leaks. Cold air entering your home can quickly drop temperatures around pipes. Check for drafts near windows, doors, and where pipes pass through walls. Use caulk or spray foam insulation to seal gaps and cracks. Pay special attention to areas around dryer vents, electrical wiring, and plumbing penetrations. This step not only protects your pipes but also improves overall home efficiency.

Winterizing Step 3: Keep Interior Temps Stable

Even if you’re leaving home for just a few days, never let your house get too cold. Maintain indoor temperatures of at least 55 degrees, and open cabinet doors under sinks to allow warm air to circulate around pipes. If you’ll be away for an extended period, ask a neighbor to check on your home. This step is especially critical during power outages. Consider a backup generator if you live in an area with frequent winter storms.

Winterizing Step 4: Locate & Label Main Shut-Off Valve

Even with preparation, accidents can happen. Knowing where your main shut-off valve is – and how to operate it – can save thousands of dollars in damage. Locate the valve, usually in a basement, crawl space, or near the water meter. Label it clearly so everyone in your household can find it quickly. Practice turning it of so you’re ready in an emergency. If a pipe bursts, shutting off the water immediately minimizes the mess and damage.

For seasonal properties or homes that may sit vacant, you may need to take additional steps. Turn off the main water supply and locate all faucets. Open them all and completely drain the water from the pipes. Flush the toilets to empty the tanks and bowls. You can also consider adding RV antifreeze to drains and toilets for extra protection. All of these steps will ensure no water is left in the system to freeze and expand while you’re away from the property.

Other Tips for Successful Winterization

There are a number of other things you can do to ensure winter plumbing safety. One thing you can do, particularly if you experience extremely cold nights, is to keep a slow drip going. When temperatures plunge well below freezing, a slow trickle of water can help prevent frozen pipes. Turn on the faucet furthest away from the main water supply line. Allow both hot and cold water to drip slightly to keep water moving through the pipes. While this may give a little bump to your water bill, it’s far less expensive than replacing a burst pipe.

Another thing you can do is to get some upgrades to your system. Install a smart water monitor to keep tabs on your water usage. These devices track water usage and detect unusual patterns, like a sudden increase that may indicate a leak. Some even shut off the water automatically if they detect a problem. Frost-proof faucets are also an option. If you live in an area with frequent freezing, replacing standard outdoor spigots with frost-proof models can prevent many issues.

Water heaters also often work harder in the winter. To keep yours more efficient, drain the sediment from the tank annually, and insulate the tank and pipes leading to and from it. Check the temperature setting and keep it around 120 degrees for most households. You can also schedule regular plumbing inspections from a professional. These experts can identify hidden vulnerabilities you might miss. They can also test water pressure and check for small leaks. Plumbers can help insulate hard-to-reach pipes and winterize outdoor systems like sprinklers and pools. Consider having this done annually in late fall to catch problems early.

What to Do If a Pipe Freezes

Even with all of this preparation, sometimes pipes still freeze. Catching them early can prevent a disaster. Watch out for signs of a frozen pipe. This can include no water coming from the faucet, or unusual odors coming from a drain. If frost is visible on the outside of the pipe, or if you see bulging or cracked sections of pipe, there’s probably an issue worth investigating.

The immediate steps you can take are to turn off the water at the main shut-off valve and then turn on all faucets to relieve any pressure that’s build up. Gently warm the frozen pipe using a hair dryer, heating pad, or warm towels. Never use open flames or propane torches. Call a plumber right away if you can’t locate the frozen area or if a pipe has already burst.

Why Professional Help Is Worth It

While many homeowners can handle basic winterization tasks, a professional plumber offers extra expertise and peace of mind. They can identify at-risk areas you might overlook, install specialized heating systems or vulnerable pipes, and ensure your plumbing system is fully protected for the winter. The cost of a preventative plumbing inspection is minimal compared to that of emergency repairs following a burst pipe. Think of it as insurance for your home’s plumbing help. For more information, reach out to the experts at Afford-A-Rooter today.

< Older Post

The Afford-a-Rooter Plumbing Repair Guarantee

24/7 Immediate Response

Certified Emergency Plumbing Service Professionals

Affordable, High-Quality Services

Recent Blog Post

DIY Plumbing vs. Professional Services: What’s More Cost-Effective?

By Trevor Harvey • September 22, 2025

Doing plumbing fixes yourself can save you some money right now, but may result in more expensive problems in the future.

What to Do When You Smell Sewage in Your Home

By Trevor Harvey • September 16, 2025

Sewage odors are usually a signal that something is going wrong with the plumbing in your home. Don’t hesitate to fix any of these problems, as they could be a serious issue.

Top 5 Plumbing Emergencies and How to Handle Them

By Trevor Harvey • July 17, 2025

Plumbing issues can cause a lot of damage in a short period of time. Being prepared can make a world of difference.

Why Does My Sink Keep Backing Up? Common Causes & Fixes

By Trevor Harvey • May 24, 2025

A backed-up sink can quickly move from being a minor inconvenience to a major headache. Whether it’s in your kitchen, bathroom, or utility room, there are signs that something isn’t quite right. It can lead to standing water in the basin, foul smells, and slow drainage. If it keeps happening, the backed-up sink can be more than just a nuisance, it can signal serious plumbing problems that require immediate attention. If you’re ever unsure about how to deal with a clogged sink, always call in a professional. Getting the correct diagnosis from the outset can save you time and money. There can be a number of reasons why the sink is getting backed up, and we’ll look at some of the most common culprits. Some of them may be minor issues, but some are also best dealt with by an experienced plumber in Westminster . Clogged Drain Pipes The most frequent cause of a backed-up sink is a clog somewhere in the drainpipe. In kitchens, food scraps, grease, coffee grounds, and soap scum are the primary reasons behind these clogs. In bathrooms, it’s usually hair, soap residue and toothpaste. This happens because, over time, debris builds up on the walls of your drainpipes. Eventually, this buildup becomes thick enough to partially or fully block water flow, causing slow drainage or a complete backup. There are a few steps you can take to fix clogged drain pipe. Try a plunger first. Make sure to create a seal over the drain and plunge firmly. If that doesn’t clear up the clog, use a drain snake or auger to physically break up and remove the clog. Avoid chemical drain cleaners. They can cause corrosion in the pipes and often provide only a temporary fix. Grease Buildup Grease can be a sneaky villain when it comes to your kitchen sink. It might go down the drain like a liquid, but it solidifies as it cools. That causes it to stick to your pipes, which can clog your drain. That sticky, solidified grease also latches on to other debris over time, making the clog even more difficult. It’s a good practice to simply never pour grease down the drain. Instead, let it cool and dispose of it in the trash. If you suspect that there is some grease buildup clogging up your sink, there are some steps you can take to try and clear it out. Pour a mixture of hot water and dish soap down the drain to break up the grease. For those that are stubborn, you can use a mixture of baking soda and vinegar and flush down with hot water. You can also consider installing a grease trap if this is a recurring issue. Blocked P-Trap The P-trap is the U-shaped pup under your sink. It’s shaped this way to hold a small amount of water within the pipe to block sewer gases from entering your home. However, because it’s shape, it makes it a common spot for clogs in your system. Most of the time, if your P-trap is clogged, you can unclog the blockage yourself with a little do-it-yourself work. If you want to attempt to clear out the P-trap yourself, the first thing you need to do is place a bucket underneath the P-trap itself. This will help catch any water or whatever is clogging the P-trap without making a mess. Unscrew the connectors on either side of the trap and remove it. Be careful, as there is always water in there, so make sure you do this over the bucket. Clean out any debris from inside the stretch of pipe of the P-trap and then reattach it. Test the sink to see if that’s where the only clog was. If it’s still running slowly or seems blocked, reach out to a professional for help. Vent Pipe Blockage Your plumbing system includes vent pipes that let air in and maintain the proper pressure. If a vent pipe becomes blocked by debris, leaves, or even the occasional birds next, it can prevent water from flowing freely. This can cause backups in your system that can appear like the drain is clogged. There are different signs of a vent blockage than your typical clogged pipe. One of the things you should notice are gurgling noises when water drains. If it seems like there are multiple fixtures that are draining slowly throughout the house, it could also be a sign of a vent blockage. Smells of sewer gas are also an indication that this is where the issue is coming from. Clearing a vent pipe typically requires going onto the roof, which may be best left to a professional plumber. They will inspect the vent stack and remove any obstructions. Main Drain Line Clog If multiple sinks or fixtures are backing up – especially in the lowest parts of your home – the issue may be a clog in your main sewer line. A common cause of these types of blockages comes from items flushed down the toilet that shouldn’t be – such as feminine products or wipes. Even if the wipes say they’re flushable, they’re not, so try and dispose of them properly in the trash. Tree roots like to invade the line, causing obstructions that lead to these backups, but they can also because by a pipe collapse or offset joints. This is a job for a professional. They have cameras and other tools that will inspect the line and other special tools to clear or repair the blockage. Garbage Disposal Malfunction If your kitchen sink backs up and you have a garbage disposal, the unit itself might be the issue. Clogs in the disposal – or just past it – are very common, especially if improper items have been stuck into the system. While the garbage disposal is a good tool for breaking up discarded food, it can cause a lot of problems. It’s important to use it in moderation by spacing out the food you put in it. Don’t put large amounts of food in the garbage disposal at one time, and try to not put fibrous vegetables in there, as well, since they can get wrapped around the blades. To fix your clogged garbage disposal, always make sure there is no power going to the disposal. The blades are sharp and dangerous, and you don’t want it to surprisingly turn on at the wrong moment. Never use your hands to remove visible debris. Always use tongs or pliers. You can manually turn the disposal blades using a hex key under the unit. If you cleared it out and it still doesn’t drain, disconnect the unit and call a professional. Troubleshooting Checklist Before calling a plumber, there are some things you can try to troubleshoot the issue. Always try to isolate the problem. Ask yourself if the issue is happening in just one sink or is it happening throughout the home. Also investigate if water is backing up from one sink into another – like the kitchen sink backing up into the laundry sink. Use your simple tools first. Plungers are a great first option, while drain snakes can get you into the pipe and often times to the source of the clog. Your wet/dry vacuum can also be used to dislodge a clog by sucking it out. Always avoid using harsh chemical drain cleaners as some of these can damage your pipes and usually don’t solve the underlying issue. Try natural solutions like baking soda and vinegar followed by boiling or hot water. When to Call the Professionals While minor clogs and backups can often be handled with do-it-yourself methods, there are definite indicators of when it’s time to call in the professionals for their expertise. If you’ve tried a number of times to unclog a sink and there are still frequent backups in that location, it’s probably time to give the pros a call. If there is water backing up into multiple sinks, it’s probably an indicator of a larger issue, as are gurgling sounds and bubbling from drains. If you have a difficult clog that is associated with strong sewer odors or standing water that won’t drain after plunging, you probably need industrial-strength tools to take care of the issue. The best way to deal with a backed-up sink is to stop it from happening in the first place. A lot of times, being proactive can prevent you from having to make those calls to the professionals. Use sink strainers to catch food particles in the kitchen sink, and run hot water after each use to help flush the lines. In the bathroom, use hair catchers in drains and avoid flushing non-dissolvable items like wipes or cotton balls down your fixtures. Don’t ignore any warning signs like slow drains or strange smells. Clogged drains can be a pain in the neck, but they may also be an indicator of other issues. For more information on how to deal with clogged drains in your home, reach out to the experts at Afford-A-Rooter Plumbing today.

The Most Common Plumbing Problems and How to Prevent Them

By Trevor Harvey • April 29, 2025

Plumbing issues can arise at any time, often when you least expect them. Whether it’s a clogged drain, a leaking pipe, or low water pressure, plumbing problems can be frustrating and costly if left unaddressed. As a homeowner, understanding the most common plumbing problems and how to prevent them can save you time, money, and stress. At Afford a Rooter, we specialize in affordable plumbing in Denver, offering professional rooter, sewer, drain, and water line repair services. In this blog, we’ll go over some of the most frequent plumbing issues homeowners face and provide practical tips to help prevent them. 1. Clogged Drains and Toilets Why It Happens Clogged drains are one of the most common plumbing issues. They occur when substances like grease, soap scum, hair, food particles, or foreign objects build up inside the pipes, restricting water flow. Toilets can also get clogged when excessive toilet paper or non-flushable items (such as wipes, cotton balls, or hygiene products) are flushed. How to Prevent It Use drain strainers to catch hair, food debris, and other particles before they go down the drain. Avoid pouring grease or oil down the kitchen sink - it solidifies and clogs pipes. Flush only toilet paper and human waste - no wipes, cotton swabs, or other items. Regularly clean drains with baking soda and vinegar to break down buildup. When to Call a Plumber If you notice slow drainage, gurgling sounds, or standing water, a professional plumber can perform a drain cleaning service to remove tough clogs before they cause backups. 2. Leaky Faucets and Fixtures Why It Happens A leaky faucet might seem like a minor annoyance, but it can waste gallons of water over time and increase your water bill. Typically, leaks are caused by worn-out washers, seals, or corrosion inside the fixture. How to Prevent It Inspect faucets regularly for drips or leaks and replace worn-out washers promptly. Turn off faucets gently rather than forcing them closed. Invest in high-quality fixtures that are less prone to wear and tear. When to Call a Plumber If a simple washer replacement doesn’t fix the leak, it could indicate a more serious issue in the plumbing system. A plumber can diagnose the problem and recommend a long-term solution. 3. Low Water Pressure Why It Happens Low water pressure can make daily tasks like showering or washing dishes frustrating. It may be caused by mineral buildup in pipes, leaks, faulty fixtures, or municipal supply issues. How to Prevent It Clean aerators and showerheads regularly to remove mineral deposits. Check for hidden leaks - unexplained water stains or high water bills could indicate a leak. Replace old, corroded pipes if mineral buildup is restricting water flow. When to Call a Plumber If your water pressure suddenly drops or remains consistently low, a plumber can inspect your plumbing system to identify and resolve the issue. 4. Running Toilets Why It Happens A running toilet wastes a significant amount of water and can drive up your utility bill. Common causes include a faulty flapper valve, worn-out fill valve, or improperly adjusted float. How to Prevent It Replace the flapper valve when it starts to wear out. Check the float height and adjust it if the toilet runs continuously. Inspect the fill valve and replace it if water continues to flow into the tank. When to Call a Plumber If your toilet continues running despite replacing parts, a plumber can help identify deeper issues, such as sediment buildup or internal leaks. 5. Water Heater Issues Why It Happens Water heaters can develop issues like inconsistent temperatures, leaks, or complete failure over time. Sediment buildup, broken heating elements, or a faulty thermostat are common causes. How to Prevent It Flush the water heater tank annually to remove sediment buildup. Set the thermostat to 120°F to prevent overheating and improve efficiency. Inspect for leaks or rust - replace the unit if necessary. When to Call a Plumber If your water heater isn’t providing hot water or is making unusual noises, a professional plumber can diagnose whether it needs repair or replacement. 6. Burst Pipes and Leaks Why It Happens Frozen pipes, high water pressure, corrosion, and shifting foundations can all lead to burst pipes or leaks. A burst pipe can cause significant water damage if not addressed quickly. How to Prevent It Insulate exposed pipes during winter to prevent freezing. Monitor water pressure and install a pressure regulator if needed. Check for rust or corrosion on pipes and replace damaged sections promptly. When to Call a Plumber If you suspect a hidden leak or experience a sudden pipe burst, shut off the main water supply and call a plumber immediately. 7. Sewer Line Backups Why It Happens Sewer line blockages can result from tree root intrusion, grease buildup, or flushing non-biodegradable materials. A backed-up sewer line can lead to foul odors, slow drains, and potential health hazards. How to Prevent It Avoid flushing anything besides toilet paper and waste. Never pour grease down the drain - it solidifies and clogs sewer lines. Schedule regular sewer line inspections to detect potential issues early. When to Call a Plumber If multiple drains in your home are backing up, it could indicate a serious sewer line issue. Professional rooter services can clear blockages and prevent further damage. 8. Sump Pump Failure Why It Happens Sump pumps protect basements from flooding, but they can fail due to power outages, improper installation, or clogged discharge lines. How to Prevent It Test your sump pump regularly by pouring water into the pit and ensuring it activates. Keep the discharge line clear of debris and obstructions. Consider a battery backup to keep the pump running during power outages. When to Call a Plumber If your sump pump isn’t working properly, a plumber can repair or replace it to ensure your home stays dry. Conclusion Plumbing issues are an inevitable part of homeownership, but many common problems can be prevented with regular maintenance and awareness. By taking proactive steps—such as keeping drains clear, monitoring water pressure, and scheduling professional inspections—you can avoid costly repairs and maintain a reliable plumbing system. If you’re dealing with a stubborn clog, a running toilet, or a more serious plumbing emergency, Afford a Rooter offers affordable plumbing in Denver to help resolve the issue quickly and efficiently. Contact us today to schedule a service and keep your plumbing system in top shape!