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Door and Window Sealing: Keeping Cool Air In and Hot Air Out

Few things are as frustrating as a home that’s not the right temperature for the season. If your space feels drafty, it’s likely time to reseal your doors and windows to keep your house comfortable.

The goal is a home that feels cool in the summer and warm in the winter. But if you struggle to control the temperature with your thermostat and notice rising energy bills, you may have a leak somewhere in your home.

Even a single leak around a window or door can strain your HVAC system, waste energy, and make you uncomfortable throughout the year. That’s why it’s important to know how to seal windows and doors effectively.

Use our guide to learn the proper method for resealing windows and doors for a happier, healthier home for your entire family.

Benefits of properly sealed windows and doors

Properly sealing your windows and doors can enhance your home and comfort levels in a variety of ways. Some of the most common benefits:

  1. Reduced Energy Bills: Eliminating drafts better insulates your home, helping you retain heat in the winter and cool air in the summer. 
  2. Increased Comfort: Blocking potential drafts prevents an uncomfortable blast of hot or cold air ruining your day. 
  3. Reduced Pests: Proper sealing reduces the number of access points into your home for bugs and other unwanted guests.
  4. Increased Air Quality: Resealing windows gives your household an extra layer of protection from outside pollutants. 
  5. Noise Reduction: Filling those cracks can reduce noise from the sidewalk, street, nearby construction, and other distractions in your neighborhood. 
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How to identify leaks in your window and door seals

Follow these recommendations to quickly manage leaks around your home:

1

Know the most common areas to check

If you suspect your home has a leak, your windows and doors are the most likely culprits. Mail slots, door jams, weatherstripping, and other weak points could create small openings for outside air to slip through. 

While you’re checking your windows and doors, don’t forget some of the other most common leak points. That includes: 

  • Outdoor water faucets
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2

Remove old caulk

Use a putty knife to pick and pry away old caulk. 

3

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Now that you’ve pinpointed areas of concern, the next step is learning how to reseal windows and doors properly to ensure long-lasting protection against drafts and energy loss.

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How to seal windows and doors

Once you’ve identified where your leaks are, follow these step-by-step instructions to completely eliminate them and reseal windows and doors.

Supplies

  • Caulk
  • Gloves
  • Pry bar
  • Putty knife
  • Spray foam
  • Weatherstripping
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1

Remove the trim

Use a pry bar to separate the trim from the wall. Set this aside; you can reattach it once you seal the windows.

2

Remove old caulk

Use a putty knife to pick and pry away old caulk. 

3

Apply spray foam to large gaps

If you have large gaps (anything over ¼ inch), use low-expansion foam.

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Mastering the steps of window sealing ensures you’ll eliminate drafts effectively, whether you’re addressing a single troublesome window or resealing windows throughout your entire home.

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Eliminate leaks and improve your HVAC system

Learning how to reseal windows is just the start of creating a home that’s comfortable, efficient, and well-protected. For those unexpected issues that resealing windows alone can’t prevent, comprehensive coverage for your essential home systems can make all the difference.

An American Home Shield® home warranty plan offers protection for key systems like your HVAC, plumbing, and electrical, ensuring that you’re covered when critical components need repair or replacement. Plus, with the new HVAC program, you can access valuable upgrades to your system, including two annual tune-ups, professional installation credits, and rebates for high-efficiency system enhancements.

Tackle leaks today and let American Home Shield help you stay ahead of the unexpected—keeping your home comfortable and secure, no matter the weather.

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