Are Aluminum Windows Soundproof? (We Find Out)

Aluminum windows are a lightweight option for your home addition, but are aluminum windows soundproof?. They are also durable and can support heavy glazing. On top of that, aluminum windows are resistant to deformation, waterproof, and highly stable. For this reason, it is an excellent choice if you want to install a strong window in your home.

On their own, aluminum windows are not soundproof. They have less air tightness than other windows, so they cannot block external noises. In addition, they do not have dedicated gasket grooves, allowing noises to pass through.

Also read: How Much Do Soundproof Windows Cost?


But while aluminum windows are not soundproof, there are some things that you can do to make them block external noises. Doing such can effectively dampen the noise pollution from the outside and prevent it from getting into your home.

How to Make Your Aluminum Windows Soundproof

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Not every window is created equal. While some can block external noises all on their own, others need additional installations to do so.

One thing worth noting is that less expensive windows that only have one pane will not be helpful enough in terms of noise blocking. For this reason, you need to choose a double or even triple-paned window.

But if the windows in your home or apartment are already single-paned when you moved in, you may have to hire someone to replace them. However, that would cause a significant amount of cash and time to achieve. Fortunately, there are other things that you can do to reduce the noise getting through your window without replacing them.

1. Use noise blocking curtains

One of the best items that you can get to soundproof your aluminum windows without spending too much is noise-reduction curtains. Since the materials used for this type of curtain are relatively thicker and have a greater density, noise-reducing curtains work excellently in sound absorption. 

The market offers a lot of options for such curtains. For this reason, you will not find a hard time getting one that will suit your needs. In addition, noise-reducing curtains can even add up to the overall design of your home. 

2. Look for window gaps and plug them

One of the most common reasons some windows cannot stop unwanted noises from passing through is that they are not entirely flush with the window frame. It results in gaps between the glasses where a lot of noise pollution can pass. 

The glass and your window frame are not completely flush with each other because your window caulking is inadequate. Meaning, the material used to seal the edges against noise leakage is not enough.

To fix this issue, you can use any of the following:

  • Removable caulk
  • Rope caulk
  • Foam backer rods

You can use the rope caulk and foam backer rods by pressing them into your window panes.  However, unlike the foam backer rods, the rope caulk is not reusable. 

On the other hand, you can use a caulk gun to place the sealant into the gaps. A removable caulk is a rubbery material that stays in place until you pull it off for replacement.  

Moreover, foam backer rods are the most effective among the three. It is because foam can absorb noise, thus effectively soundproofing your aluminum window. 

3. Use window insets

If you have porous windows, another excellent option is to install window inserts in front of them. 

Window inserts are customized glass panels that you can place right in front of your window frame. Apart from blocking noises, they can also regulate temperature by blocking some of the sun’s heat outside. This method is proven effective. However, it is essential to note that they cannot dampen noise the same way as outright noise-reducing windows do. 

4. Furniture can deaden unwanted noises

When trying to dampen the noise you hear from outside your home, most people focus only on their aluminum windows. However, the reality is that it is not only your windows that can do such a job. Furniture, such as your sofa, table, carpets, and bookshelves, can also reduce the amount of noise circulating within the specific part of your home. 

Check out my window soundproofing guide.

Why Should You Not Replace Your Aluminum Window with Other Window Types?

Homeowners who want to replace their windows now have more options than ever. There are many window choices in terms of materials, designs, styles, and finishes. But despite this fact, many people still opt-in for aluminum windows. It is because such a window material is durable, less expensive, and low maintenance.

You should not replace your aluminum windows even if they allow noises to leak. You can do other options to soundproof aluminum windows, so make sure that replacing them is out of your options.

Below are the reasons why aluminum windows are one of the best window types:

Aluminum Frames Are Strong And Have Great Structural Integrity

If you have seen houses with large windows, you may notice that most of them generally use aluminum frames. It is because the aluminum material used for them is robust enough to handle larges sizes. Apart from that, they also have a considerably high resistance to impact, ensuring they will not have dents. 

Aluminum Windows Are Low Maintenance

Other than installing soundproofing materials on your aluminum windows, the only thing you need to do to maintain them is to clean them using an aluminum cleaner. Doing with will prevent your window frame from acquiring rust or mold over time. In addition, it would be helpful for you to lubricate the moving parts of the window to prevent them from tearing and wearing. 

They Insulate Excellently

Aluminum windows are significant in terms of insulation. Because they can minimize heat transfer and help reduce the amount of energy you use for air conditioners or other cooling appliances. 

Aluminum Windows Are Affordable

Compared to wood windows, aluminum windows are relatively more affordable. And as mentioned, they do not require high maintenance, so you can relax knowing that you do not have to spend money after you have had your aluminum windows installed. 

Aluminum Windows Look Modern, So They Are Aesthetically Pleasing

In terms of style, aluminum windows are always readily available in your local hardware. You can purchase them as a single or double-hung, single or multi-pane, and almost any finish and color you want. You can even have them coated so that they can achieve a wood look.

In addition, they either have a smooth or powder-coated enamel texture that makes them much sleeker. They also look very modern. For this reason, they fit in with contemporary-looking homes. 

The Takeaway

On their own, aluminum windows cannot block the noises coming from the outside. For this reason, you will have to endure the annoying and disturbing noise pollution while you are sleeping, relaxing, or watching a movie. But that is no longer the case.

There are now several options that you can choose from when it comes to soundproofing your aluminum window. It means that you do not have to replace them to eliminate the unwanted noise that gets into your home.

In addition, aluminum windows are also advantageous since they are less expensive, low maintenance, and readily available. So, people who are looking to replace their old windows should consider aluminum when choosing a replacement. 


  1. Caulking, Wikipedia, Accessed May 2, 2021.
  2. A.A. Newton & Sam Blum, How to Soundproof Noisy Windows so You Can Get Some Sleep, Life Hacker, Accessed May 2, 2021.
  3. Thomas Baker, Mind the Window Gaps, This Old House, Accessed May 2, 2021.

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