Save Your Pipes: Tips and Tricks to Sealing Gaps and Cracks 

One often overlooked step in protecting your pipes is sealing the gaps and cracks around your home. These small openings, especially around exterior walls, doors, and windows, can allow cold air to seep in, exposing your pipes to the risk of freezing and bursting. Cold air entering through even the smallest cracks can significantly reduce the temperature around your pipes, leading to freezing. According to the Insurance Institute for Business & Home Safety, a burst pipe can lead to thousands of dollars in damages in just a few minutes. Follow these tips to get the trick of managing cracks mastered.

Our Tips:

• Locations to Check for Cracks and Gaps
• Step-by-Step Fix It Guide
• The Trick to Checking and Sealing for Cracks and Gaps
• Protect Your Plumbing System: Winterproofing Quick Tips

Locations to Check for Gaps and Cracks

Here are four additional locations to inspect for gaps and cracks that directly relate to plumbing systems, applicable to both homes and commercial buildings:

1. Around Water Heaters: Water heaters, especially those located in basements or garages, are often installed against exterior walls, which can expose them to cold drafts. Check for gaps around where the heater’s venting pipes exit the building or where the water supply lines enter. Sealing these areas can prevent cold air from freezing the pipes and reducing the water heater’s efficiency.
2. Crawl Spaces: Crawl spaces are common areas where plumbing lines run beneath a house or building. If the vents or access doors to these spaces are not sealed, cold air can easily infiltrate, increasing the risk of frozen pipes. Properly seal vents and ensure any gaps around plumbing that pass through the foundation are caulked or insulated.
3. Under Sinks (Kitchen and Bathroom): Gaps around the plumbing beneath sinks, especially in older homes and commercial buildings, can allow cold air to enter the cabinets. This can cause pipes located here to freeze, particularly if the cabinets are against exterior walls. Use expanding foam or caulk to seal around pipe penetrations in these spaces.
4. Around Hose Bibs and Outdoor Faucets: Hose bibs (outdoor faucets) and the piping leading to them are vulnerable to freezing in cold weather. Check for gaps around the mounting point where the pipe exits the building wall. Sealing around this area can prevent drafts from reaching indoor plumbing lines connected to the hose bib, reducing the risk of freezing. 
5. Gaps Around Plumbing Fixtures: Where pipes enter or exit walls—particularly in bathrooms, kitchens, and basements—gaps may allow cold air to reach your pipes. Sealing these areas with caulk or foam protects the entire plumbing system.

Nate Says: One of my favorite ways to find gaps and cracks in basements and crawlspaces is to enter them on sunny days and turn off all the lights. The sun will shine through the holes, showing you many of the problems.

Step-By-Step Fix It Guide

Once you’ve identified potential trouble spots, follow these steps to seal the gaps and protect your pipes:

1. Measure the gap where the air is escaping.
2. Use the correct sealant for the crack size and location:
• For Gaps Smaller than 1/4 inch: Use weatherproof caulk. This easy-to-apply product dries quickly and creates a durable seal that keeps cold air out, preserving the temperature around your pipes.
• For Gaps Larger than 1/4 inch: Opt for expanding foam sealant. This foam expands to fill larger spaces and hardens, creating an airtight barrier. Trim any excess once it hardens for a neat finish.
• Weather Stripping Around Doors and Windows: Apply self-adhesive weather stripping around the edges of windows and doors to block drafts effectively. This is a simple solution for protecting nearby pipes.
3. Insulate Exposed Pipes: Pipes in unheated areas, such as basements or attics, are particularly susceptible to freezing. Add foam pipe insulation to provide an extra layer of protection. This inexpensive insulation can make a big difference in maintaining pipe temperature.

Nate Says: Read my tips to USA Today Homefront on insulating water supply pipes.

The Trick to Checking and Sealing for Cracks and Gaps

• When using expanding foam, you can trim the excess foam once it has dried for a cleaner appearance.
• Opt for weatherproof caulk that can withstand temperature fluctuations.
• Sprinkle a small amount of chalk dust near potential problem areas and carefully observe whether the dust is disturbed by airflow, which can indicate a draft caused by a crack or gap.
• To make the application easier, soak the caulk tube in warm water for about 10 minutes before using. This softens the material, allowing for smoother application, especially in cold environments like basements or exterior gaps.

Protect Your Plumbing System: Winterproofing Quick Tips

Keep the Heat On

During cold snaps, ensure your home is adequately heated. Even if you’re away, set the thermostat to at least 55°F to keep pipes from freezing.

Open Cabinet Doors

In kitchens and bathrooms, open cabinet doors to allow warm air to circulate pipes, especially near exterior walls.

Let Faucets Drip

Allowing a small trickle of water to run through your faucets during extremely cold weather can prevent pipes from freezing. Water movement helps relieve pressure that could otherwise lead to a burst pipe.

Why Sealing Gaps is Essential for Your Entire Plumbing System

Prevents Pipe Freezing

Freezing pipes are a leading cause of winter plumbing issues. By blocking cold air, you maintain a stable temperature, reducing the risk of pipes freezing and bursting.

Reduces Moisture and Corrosion

Sealing gaps prevents moisture from entering your home and condensing on pipes, which can lead to corrosion over time. Keeping your pipes dry protects them from deterioration and prolongs their lifespan.

Improves Water Pressure

Freezing and burst pipes disrupt water flow, decreasing water pressure throughout the home. By sealing gaps, you help maintain the overall functionality of your plumbing system.

Enhances Energy Efficiency

Preventing cold air from reaching your pipes also helps your water heater work more efficiently. With less heat loss through exposed pipes, your water stays warmer for longer, reducing energy usage.

By taking a proactive approach now, you can avoid expensive repairs and enjoy peace of mind throughout the winter. Whether you’re sealing around windows, doors, or plumbing fixtures, these small tasks can make a big difference in keeping your plumbing system safe and efficient.

If you’re unsure where to start or need professional help, reach out to your local plumbing experts at Schlueter Plumbing to inspect your home and give you the best recommendations for winterizing your plumbing. Call us at 513-771-7588 or click here to schedule an appointment.

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