How To Soundproof a Window – 7 Expert Advice Ways!

Are you tired of the constant noise pollution entering your home through the windows? Whether you live in a bustling city or near a busy road, soundproofing your windows can make a significant difference in reducing unwanted noise.

In this updated article, we will explore various methods and products that can help you achieve a quieter and more peaceful living space.

Wether you live in an apartment or a house where you can make alterations, you’ll find a way to make your living space much more peaceful.

Here are the 10 Best ways to soundproof a window. This is an expanded version of the video I just posted, link bellow!

The video in which this article is based from and with tons of information about soundproofing a window.

Here are all the Soundproofing Material you will need to soundproof a window in your home or apartment!

1. Weatherstripping

2. Acoustic Sealant / Caulking

3. Sound Deadening Curtains

4. Single Panel Sound Deadening Curtains

5. Industrial Velcro

6. Moving Blanket

1. Seal a the Cracks and Gaps around Your Window

Sealing cracks and gaps around your window frame is an essential first step in soundproofing your windows. These small openings may seem insignificant, but they can allow a significant amount of noise to enter your living space. Here’s a more detailed explanation of how to address this issue:

  1. Identify the Cracks and Gaps: Carefully inspect the area around your window frame, both inside and outside. Look for any visible cracks, openings, or gaps where noise can penetrate. These gaps can occur due to house shifting, settling, or improper installation.
  2. Acoustical Caulking: Acoustical caulking is a specialized type of caulk designed to remain flexible over time, maintaining its soundproofing properties. Unlike regular caulking, which can dry up and crack as the home shifts, acoustical caulking provides a durable and reliable seal.
  3. Gather the Necessary Supplies: To seal the cracks and gaps, you’ll need acoustical caulking and a caulking dispenser. Acoustical caulking is readily available at hardware stores or online, and it’s essential to choose a high-quality product for optimal results.
  4. Prepare the Surface: Before applying the acoustical caulking, ensure that the area is clean and dry. Remove any old caulk or debris from the cracks and gaps. Use a scraper or putty knife to clean the surface thoroughly.
  5. Apply the Acoustical Caulking: Load the acoustical caulking into the caulking dispenser. Cut the nozzle at a 45-degree angle to create a small opening. Starting from one end, carefully apply the caulk along the cracks and gaps, making sure to fill them completely. Smooth the caulk with a caulk finishing tool or a wet finger to create a neat and even seal.
  6. Allow Sufficient Drying Time: Follow the manufacturer’s instructions regarding the drying time of the acoustical caulking. It typically takes a few hours to dry, but it’s essential to wait until the caulk has fully cured before testing its effectiveness.

By sealing the cracks and gaps with Acoustical Caulking (Amazon), you create a barrier that prevents noise from entering your living space through these vulnerable points. This step is critical because even the smallest gaps can significantly impact the effectiveness of other soundproofing measures you might undertake.

Remember, while sealing cracks and gaps is an effective starting point, it may not provide complete soundproofing. It is one layer in a multi-layered approach to reducing noise infiltration through your windows.

Here is a video I posted on YouTube a while back where I demonstrate exactly how to apply acoustic sealant correctly.

2. Weatherstrip The Bottom of the Window

Ensuring that your window shuts tightly is another important aspect of soundproofing your windows. A tight window closure helps prevent noise from infiltrating your living space. Here’s a more detailed explanation of how to achieve a proper seal:

  1. Inspect the Weather Stripping: Take a close look at the weather stripping around your window frame. Weather stripping is a material that creates a seal between the window sash (movable part of the window) and the frame. Over time, weather stripping made of rubber can deteriorate, lose its elasticity, and become less effective in providing a tight seal.
  2. Check for Damage: Look for any signs of damage, such as cracks, gaps, or wear and tear, in the weather stripping. Damaged weather stripping can result in air and noise leakage, undermining the soundproofing capabilities of your window.
  3. Replace the Weather Stripping: If you find that the weather stripping is damaged or no longer provides a proper seal, it’s time to replace it. Remove the old weather stripping by peeling it away from the window frame. Clean the area to ensure a smooth surface for the new weather stripping.
  4. Choose the Right Weather Stripping: When selecting new weather stripping, opt for materials specifically designed for soundproofing. Look for weather stripping made of durable materials like silicone or foam, as they can provide better sound insulation compared to standard rubber weather stripping.
  5. Install the New Weather Stripping: Cut the new weather stripping to the appropriate length, ensuring it fits snugly around the window frame. Start by attaching it to the bottom of the window sash, then move to the sides and top. Press the weather stripping firmly into place to create a tight seal.
  6. Test the Window Closure: Close the window and check for any gaps or openings. Gently tug on the window to see if there is any movement or looseness. If you notice gaps or feel air drafts, adjust the weather stripping accordingly to achieve a secure and tight closure.
Self Adhesive Weatherstripping

By ensuring a tight window closure through proper Weather Stripping (Amazon), you enhance the window’s ability to block out noise. This step is particularly effective in reducing noise leakage from outside sources, such as traffic or loud neighbors. It complements other soundproofing methods and contributes to a quieter and more comfortable living environment.

Remember to periodically inspect and maintain the weather stripping to ensure its continued effectiveness. Over time, weather stripping may wear down again and require replacement.

3. Custom-Made Window Inserts

Watch this video where I sound test Indow Window Noise Reduction Panels. Hear the difference for yourself!

When it comes to achieving significant noise reduction for your windows, custom-made window panels can be a valuable solution. These panels are designed to fit your window precisely, offering an effective barrier against external noise. However, there are a few important points to consider:

  1. Customization and Cost: Custom-made window panels are tailored to the specific dimensions of your window. This customization ensures a perfect fit, maximizing their soundproofing capabilities. However, this level of customization comes at a higher price point compared to other soundproofing options. Companies like Indo Windows specialize in manufacturing these panels, offering a range of options to suit different window sizes and shapes.
  2. Compatibility with Single Pane Windows: Custom-made window panels work exceptionally well with single pane windows. Single pane windows typically provide less insulation against noise compared to double or triple pane windows. By adding custom panels to a single pane window, you can significantly reduce the amount of noise entering your living space.
  3. Limitations with Double or Triple Pane Windows: If you already have double or triple pane windows, the effectiveness of custom-made panels might be somewhat limited relative to their cost. Double or triple pane windows already provide improved sound insulation due to the multiple layers of glass and the insulating gas sealed between them. Adding custom panels to these windows might not yield as substantial a noise reduction compared to single pane windows.
  4. Consideration for Long-Term Residency: Custom-made window panels are particularly beneficial for individuals living in apartments or houses where altering the existing windows is not an option. If you plan to stay in your current residence for an extended period, investing in custom panels can be a wise choice. They offer a significant reduction in noise infiltration without the need for extensive modifications to the window structure.
  5. Cost-Effectiveness: It’s important to assess the cost-effectiveness of custom-made window panels based on your specific needs. Consider the level of noise you experience, the duration of your stay in the property, and the overall budget you have allocated for soundproofing solutions. If you have single pane windows and face significant noise issues, investing in custom panels might be worth the cost. However, for those with double or triple pane windows, alternative soundproofing options might provide a more cost-effective solution.

Custom-made window panels can be an excellent investment for those seeking substantial noise reduction. They are most effective for single pane windows, significantly reducing noise infiltration.

However, their cost should be carefully considered, especially if you already have double or triple pane windows, as their effectiveness may be limited relative to their expense.

Assess your specific needs, budget, and long-term residency plans to determine if custom panels are the right soundproofing solution for your windows.

4. Sound Deadening Curtains

A video from the my YouTube Channel where I talk about sound deadening curtains.

When it comes to reducing noise through your windows, sound deadening curtains and moving blankets can provide a moderate level of noise reduction.

Sound deadening curtains are designed to absorb and dampen external sounds, helping to reduce noise transmission through windows.

While they cannot completely soundproof a window, they can make a noticeable difference in reducing the amount of noise entering a room.

It’s important to note that sound deadening curtains are different from regular curtains and are specifically designed for noise reduction.

To enhance the effectiveness of sound deadening curtains, there are a few strategies you can employ.

  • Opt for a Single Large Curtain: Using one large curtain instead of two separate panels can minimize noise bleeding through the center slit where the two panels meet. This creates a more continuous barrier, reducing the potential for sound leakage.
  • Create a Seal with Velcro: Attach velcro around the window frame and the corresponding side of the curtain. This creates a tight seal when the curtain is closed, further minimizing noise infiltration around the edges. The velcro provides an additional layer of sound blocking by ensuring a secure fit between the curtain and the window frame.

5. Moving Blankets

Moving Blankets

Moving blankets, typically used for protecting furniture during transportation, can also serve as effective noise blockers when hung over windows.

These blankets are thicker and often contain fiberglass insulation, which helps in absorbing and deadening sound waves.

Moving blankets can be an economical alternative to sound deadening curtains, particularly if you’re on a budget.

Similar to sound deadening curtains, you can attach them to the window frame using velcro or other methods to ensure a snug fit and reduce noise leakage.

It’s worth noting that while sound deadening curtains and moving blankets can significantly reduce noise, their effectiveness will depend on factors such as the thickness and quality of the materials used.

For optimal results, choose curtains or blankets specifically designed for sound deadening purposes, as they are engineered to provide better noise reduction.

Remember, while these options can help in reducing noise, they do not provide complete soundproofing.

They are effective in deadening and absorbing external sounds to create a quieter indoor environment, but some types of noise may still easily penetrate through.

Consider combining these solutions with other methods for more comprehensive noise reduction, especially if you’re dealing with high levels of noise intrusion.

Overall, sound deadening curtains and moving blankets are cost-effective options to consider when aiming to reduce noise coming through your windows.

They can make a noticeable difference and contribute to a more peaceful and quiet living space.

6. Sound Deadening Window Panel

In this video I do a sound test on a custom made Sound Deadening Door Panel. You can buy panels just like this made for Windows!!

When it comes to advanced soundproofing solutions, sound deadening window and door panels are a great option to consider.

These panels are designed with multiple layers of specialized soundproofing materials, providing enhanced noise reduction capabilities.

Here’s a closer look at how these panels can help in soundproofing your windows and doors:

  1. Enhanced Noise Reduction: Soundproofing panels are specifically engineered to minimize the transmission of sound waves, effectively reducing the amount of noise that enters or escapes through your windows and doors. The multiple layers of soundproofing materials, such as mass-loaded vinyl, acoustic foam, and fiberglass insulation, work together to absorb and block sound, preventing it from passing through the panel.
  2. Versatility: Soundproofing panels can be customized to fit different window and door sizes and shapes, ensuring a proper and snug fit. This versatility allows for effective soundproofing regardless of the specific dimensions of your windows or doors.
  3. Limited Alterations: Soundproofing panels are particularly beneficial for situations where you have limited options to modify your windows or doors, such as living in an apartment or a rented space. Unlike replacing windows or doors, which may require significant changes, these panels can be easily installed and removed without causing permanent alterations to the existing structures. This makes them a practical solution for temporary or non-permanent soundproofing needs.
  4. Multiple Layered Construction: The layered construction of soundproofing panels is designed to provide maximum sound absorption and insulation. The different materials used in these panels work synergistically to block airborne sound waves, reduce vibrations, and minimize resonance. The result is a significant reduction in noise transmission, creating a quieter and more comfortable indoor environment.
  5. Additional Benefits: Apart from noise reduction, soundproofing panels also offer other benefits. They can help improve energy efficiency by enhancing insulation and reducing heat or cold transfer through windows and doors. This can contribute to better temperature control and potential energy savings.

It’s important to note that the effectiveness of soundproofing panels will depend on various factors, such as the quality of the materials used, the thickness of the panels, and the installation technique.

Therefore, it’s advisable to invest in high-quality panels from reputable manufacturers to ensure optimal noise reduction performance.

While soundproofing window and door panels may come at a higher price compared to some other solutions, they provide a long-term and reliable option for reducing noise infiltration.


Window plugs are a do-it-yourself (DIY) approach to soundproofing that involves creating barriers to fill the entire window frame.

These plugs can be effective in reducing noise transmission through windows. Here’s some information on window plugs and how they can be built:

  1. Purpose of Window Plugs: Window plugs are designed to create a physical barrier that blocks sound from entering or escaping through the window. By filling the window frame completely, they help to seal off the window and prevent noise leakage.
  2. DIY Construction: Window plugs can be constructed using various materials depending on your preferences and the level of soundproofing you desire. Common materials include foam boards, mass-loaded vinyl, plywood, or a combination of these. The key is to create a sturdy and dense barrier that effectively reduces sound transmission.
  3. Experimentation and Customization: Building an effective window plug may require some experimentation to find the best materials and construction techniques. Since every window frame is unique, you may need to customize the plug to fit your specific window dimensions. Proper measurements and a snug fit are crucial to maximize the soundproofing capabilities.
  4. Building Techniques: While the specific construction techniques can vary, a typical approach involves cutting the chosen material to fit the window frame, attaching it securely to a frame or backing board, and inserting the plug into the window frame. The plug should fit tightly and create a seal to minimize air gaps and prevent sound leakage.
  5. Sharing Findings and Best Approaches: The statement mentioned upcoming videos where findings and the best approaches for building effective window plugs would be shared. These resources can be valuable for DIY enthusiasts, providing guidance and tips on constructing window plugs for optimal soundproofing performance.

It’s important to note that the effectiveness of window plugs will depend on the materials used, the quality of construction, and how well they fit the window frame.

Proper installation is crucial to create an airtight seal and minimize sound leakage.

Window plugs can be a cost-effective DIY solution for soundproofing windows, especially if you enjoy hands-on projects and want to customize the solution to your specific needs.

However, it’s worth considering that window plugs are a temporary solution that can be removed when not needed.

They may not offer the same level of convenience or aesthetic appeal as permanent soundproofing options.

If you’re considering window plugs, it can be helpful to research and gather information from reliable sources, such as tutorials, videos, or forums, where experienced DIYers share their techniques and experiences.

This can give you a better understanding of the materials, construction methods, and potential challenges associated with building effective window plugs.

Remember to assess your skills, available tools, and resources before embarking on a DIY project like window plugs.

If you’re unsure or not confident in your abilities, consulting with a professional or seeking expert advice can ensure that you achieve the desired results in an efficient and effective manner.

Think You Can Soundproof a Window Now?

After going through all these different types of ways to soundproof a window, which one will you chose? Make sure to watch my YouTube videos and visit my channel for all your soundproofing needs.

Link to my Soundproof Guide YouTube Channel –

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