How to Seal Drafty Windows: Tips and Tricks

Welcome to the world of DIY home repair! If you’re looking to save some money on heating and cooling costs, you’ve come to the right place. Drafty windows can be a major source of energy loss in any home, but luckily, they’re also relatively easy to fix. In this article, we’ll guide you through 12 simple steps to seal up those pesky drafts and keep your house feeling cozy all year long.

Step-by-Step Guide to Sealing Drafty Windows

Step 1: Identify the Problem

Before you can begin sealing up your windows, you need to identify where the drafts are coming from. Start by standing near the window and feeling for any cold air. You can also use a candle or incense stick to see if the smoke moves in any particular direction.

Step 2: Clean the Window Frames

Once you’ve identified where the drafts are coming from, it’s time to start cleaning. Use a damp cloth to wipe down both the window frames and the glass. You want to make sure there’s no dirt or debris in the way of a good seal.

Step 3: Apply Caulk

Caulk is a flexible material that can be used to seal up any gaps or cracks around your window frames. Use a caulk gun to apply a thin, even line of caulk to any areas where you feel a draft.

Step 4: Install Weatherstripping

Weatherstripping is a flexible material that’s designed to seal gaps around doors and windows. It comes in a variety of shapes and sizes, so make sure you choose the best type for your particular window frame.

Step 5: Use a Window Insulation Kit

If you’re dealing with especially drafty windows, you may want to consider using a window insulation kit. These kits are relatively inexpensive and can help keep your home feeling warm and cozy.

Step 6: Add Window Film

Window film is a thin, clear layer of material that can be applied to the inside of your window frames. It helps to insulate your windows and prevent any drafts from sneaking in.

Step 7: Use Draft Stoppers

Draft stoppers are long, thin pieces of material that can be placed at the bottom of your window frame to prevent any cold air from coming in.

Step 8: Install Storm Windows

If you have older windows that aren’t well-insulated, you may want to consider installing storm windows. These are basically a second set of windows that go on the outside of your existing windows and help to create a barrier against the elements.

Step 9: Cover Windows with Plastic

Another option for insulating your windows is to cover them with plastic. This is a cost-effective solution that can be especially useful if you’re living in a rental property.

Step 10: Install Window Shades or Blinds

Window shades or blinds can help to create an extra layer of insulation against the cold. If you’re not getting enough heat from the sun during the day, consider investing in insulated shades or blinds.

Step 11: Layer Up with Curtains

Curtains can also be a great way to insulate your windows and prevent drafts. For maximum warmth, choose thicker, heavier curtains made from an insulating material like wool.

Step 12: Make Sure Your Windows Are Locked

Finally, make sure your windows are securely locked. Even the tiniest gap can let in a lot of cold air, so it’s important to get those windows nice and tight.

Tips and Tricks for Sealing Drafty Windows

1. Use a Window Draft Stopper

A window draft stopper can be an inexpensive and effective way to seal up any gaps or cracks in your window frame.

2. Add Insulation to Your Attic

If you’re having trouble with drafty windows, it may be a sign that your home isn’t properly insulated. Adding insulation to your attic can help to keep your home feeling cozy and warm.

3. Use Door Draft Stoppers

Draft stoppers aren’t just for windows! You can also use them to seal up any gaps around your doors.

4. Invest in Thermal Curtains

Thermal curtains are made from insulating material and can help to keep your home feeling warm and cozy all winter long.

5. Consider Replacing Your Windows

If you have old, single-pane windows, it may be time to consider replacing them with newer, more energy-efficient models.

6. Use Bubble Wrap

Believe it or not, bubble wrap can be an effective way to insulate your windows. Simply cut a piece of bubble wrap to fit your window and press it against the glass.

7. Seal Up Your Doors

In addition to sealing up your windows, it’s also important to make sure your doors are fully sealed. Use weatherstripping or a door sweep to prevent any drafts from coming in.

8. Consider Using a Draft Snake

A draft snake is a long, thin piece of cloth or foam that can be placed at the bottom of your door to prevent any cold air from coming in.

9. Use a Space Heater

If all else fails and you’re still feeling chilly, consider using a space heater to warm up your home. Just make sure to use it safely and follow all manufacturer’s instructions.

10. Check Your HVAC System

Finally, if you’re still having trouble with drafts, it may be time to check your HVAC system. Make sure it’s working properly and getting regular maintenance to ensure maximum efficiency. There you have it – 12 easy steps to seal up your drafty windows and keep your home feeling cozy all winter long. With just a little bit of time and effort, you can save money on your energy bills and enjoy a more comfortable living space. Happy sealing!

Advantages and Disadvantages of Sealing Drafty Windows


1. Reduces energy bills: Sealing drafty windows can significantly reduce energy bills as it prevents air leakage, which in turn maintains a comfortable room temperature.

2. Enhances indoor air quality: Drafty windows can allow outdoor pollutants to enter your home, which can affect indoor air quality. Sealing drafty windows can help keep outdoor allergens and pollutants at bay, which could be especially beneficial to those with respiratory issues.

3. Increases home comfort: Sealed windows can maintain a consistent temperature throughout the house, making it much more comfortable to live in, even during extreme weather conditions.

4. Prolongs life of HVAC system: A sealed home will require less work from your heating, ventilation, and air conditioning (HVAC) system, which can help prolong its life.

5. Improves home value: Sealing drafty windows can increase the value of your home as it enhances energy efficiency and indoor comfort, which are highly valued by potential buyers.

6. Environmentally-friendly: Reducing energy usage through window sealing is an environmentally-friendly practice that helps reduce carbon impact.

7. Easy to do: Sealing drafty windows is an easy DIY project that requires minimal time and effort.

8. Increases durability of windows: Sealing drafty windows can help prevent wear and tear, which can increase the longevity of your windows.

9. Reduces noise: A sealed window can help reduce exterior noise and traffic sounds, making your home a much quieter space for relaxation and rest.

10. Enhances aesthetics: Window sealing products are available in various colors and textures, which can enhance the aesthetic appeal of your home’s windows.


1. Initial cost: The initial cost of purchasing sealing products can be expensive, although it will pay for itself in energy savings in the long run.

2. Time-consuming: Sealing all drafty windows can be a time-consuming process, especially if you have many windows in your home.

3. Professional help may be required: Some windows may require professional sealing, which can add to the initial cost of the project.

4. Visual impact: Sealing window can sometimes alter the visual impact of true divided light windows or decorative patterns.

5. Maintenance: Sealed windows require routine maintenance to ensure they continue to perform optimally.

6. Weather dependent: Window sealing cannot be done during rainy weather conditions as it requires a dry surface area to adhere.

7. May not entirely eliminate drafts: Some drafty windows may not be sealed entirely, particularly if the house is older or has structural issues.

8. Limitations: Depending on the extent of the drafts, some windows may not be entirely salvageable and may require replacement rather than sealing.

9. Acclimatization: It may take some time to acclimate to a properly sealed home, as indoor air may seem stuffy or stagnant at first.

10. Aesthetics: Sealed windows can sometimes alter the aesthetics of a home, and the selection of sealing products must be chosen with this in mind.


1. What are drafty windows?

Drafty windows are windows that let air in and out of your house when they are closed. This can cause your home to feel uncomfortable and cause energy bills to increase.

2. How can I tell if my windows are drafty?

You can tell if your windows are drafty by feeling air coming in around the edges of the window, hearing whistling or rattling sounds when the wind blows, or having trouble keeping a constant temperature in your home.

3. Why should I seal my drafty windows?

Sealing drafty windows can help increase the comfort of your home, lower energy bills, and reduce your carbon footprint.

4. What materials do I need to seal my drafty windows?

You will need weatherstripping strips, caulk, a caulking gun, and a draft stopper.

5. How do I apply weatherstripping?

Cut the weatherstripping to length and then press it firmly onto the edges of the window frame, making sure to cover all gaps.

6. What type of caulk should I use for sealing my windows?

You should use silicone or latex caulk for sealing your windows.

7. How do I apply caulk?

Cut the tip of the caulk tube at a 45-degree angle, insert it into a caulking gun, and then apply the caulk in a continuous bead along the edges of the window frame

8. How do I make a draft stopper?

Cut a strip of fabric to the length of your window, then fold it in half lengthwise and sew along the long edge. Turn the tube right side out and fill it with rice or beans. Sew the ends of the tube closed and you have a draft stopper!

9. Should I seal my windows on the inside or outside?

It’s best to seal your windows on the inside to prevent drafts from entering your home.

10. Can I seal my windows without hiring a professional?

Yes, you can seal your windows yourself without hiring a professional. It’s a simple process that only takes a few tools and materials.

11. When is the best time to seal my windows?

The best time to seal your windows is in the fall before the weather gets too cold.

12. How often should I check my windows for drafts?

You should check your windows for drafts at least once a year.

13. Will sealing my windows completely eliminate drafts?

No, sealing your windows will not completely eliminate drafts, but it will help significantly reduce them. You may still feel some air coming in around the edges of the window, but it will be much less than before.

How to Seal Drafty Windows

Are you tired of feeling a draft in your home, especially during the winter months? Drafty windows can result in higher energy bills and an uncomfortable living space. Luckily, there are steps you can take to seal drafty windows and improve the energy efficiency of your home.


There are many reasons why your windows may be letting in drafts, including old age, poor installation, or deteriorating sealing materials. However, with a little effort and the right tools, you can seal up those drafts and enjoy a more comfortable home. Whether you decide to tackle the job yourself or hire a professional, taking the time to seal your drafty windows is sure to save you money and improve your quality of life.

Once you have sealed your drafty windows, you may notice a significant improvement in your energy bills and overall comfort level. With a bit of maintenance and vigilance, you can keep your windows in good shape and avoid future drafts. If you have any questions or concerns about sealing your windows, don’t hesitate to reach out to a professional for assistance.


Thanks for reading our guide on how to seal drafty windows. We hope that these tips and tricks have been helpful and informative. Remember, sealing drafty windows doesn’t have to be a difficult or time-consuming task. By following the steps outlined here, you’ll be well on your way to a more energy-efficient and comfortable home. Good luck!