Are Triple Pane Windows more Soundproof (Yes, But…)

Triple pane windows are gaining in popularity because of their energy efficiency, even though they are more expensive to purchase. Naturally, people want to know if they are more soundproof than double pane windows, let’s find out.

Are Triple Pane Windows more Soundproof? Yes, triple-pane windows are more soundproof than double-pane windows. Triple-pane windows have a third pane of glass that reflects the sound waves back into the room, making it harder for them to escape. On the other hand, double-pane windows only have two panes of glass.

What’s the difference between a single pane and triple pane window? When should you choose one over the other? In this article I’ll share with you which window is better in terms of energy efficiency, cost, and soundproofing.

Double Pane Windows vs Triple Pane Windows

Double Pane Windows vs Triple Pane Windows

Double pane windows are made of two panes of glass with an air space in between. Triple pane windows have three panes of glass with an air space between them, which makes them even more energy efficient and soundproof than double pane windows.

Double pane windows are the most common type of window and can be found in most homes. They consist of two panes of glass with a space between them filled with air or gas. The air acts as an insulator and helps to keep the heat inside your home during the winter and outside during the summer.

Triple pane windows are similar to double pane windows, but have three layers of glass instead of two. This makes them more efficient at keeping heat out in the summer and in during the winter. Triple pane windows are also more durable than double pane ones, which means they will last longer before they need to be replaced.

Double pane windows are less expensive than triple pane ones because they require less material to manufacture. However, if you’re looking for increased energy efficiency or durability, triple pane windows may be a better choice for you.

Double and triple pane windows are both popular choices for homeowners. They offer several benefits, but there are also some important differences between the two. Following are some:



Double pane windows are very good at reducing noise, but triple pane windows can be even better. The most significant difference between double and triple pane windows is the number of air spaces. 

A double-pane window has two separate panes with a space in between them, while a triple-pane window has three separate panes with spaces in between them. The more air spaces there are, the better your window will be at blocking out outside noise.

When it comes to soundproofing, triple pane windows are the clear winner. Triple-pane windows reduce sound up to 60% while double pane windows only reduce it by 38 to 40%. If you have a noisy neighbor or live near an airport, a triple-pane window is your best bet for reducing the noise level in your home.

Available Materials

When you’re looking for new windows, you want to find the best value for your money. You also want to be sure that the windows will be safe and energy-efficient, so that you can enjoy your home for years to come.

You don’t need to choose between double pane windows or triple pane windows, though. The truth is, both types of windows are available in a wide range of materials such as wood, fiberglass, and vinyl. So you can get the type of window you want no matter what kind of material you prefer.


The cost of double pane windows is lower than triple pane windows. However, this isn’t always the case because there are many factors that can affect the price of both such as size, shape and brand etc.

Generally, double pane windows are the more affordable option for most homeowners. They start at about $200 per window, and go up from there depending on the size and style of the window. Triple pane windows can cost up to $1,000 per window, but they are much more energy efficient than double pane windows.

If you want to install more than one window at a time, then you might want to go with double pane windows as they cost less per window than triple pane ones. 

Energy Efficiency

Energy Efficiency

Double pane windows are a great way to save energy, but triple pane windows are even better. Triple pane windows have three panes of glass instead of two, which helps reduce air infiltration and makes them more efficient. 

The third layer also helps insulate heat in the winter and keep it out in the summer, so you’ll never have to worry about your home getting too hot or too cold.

Where to Use

Double pane windows are ideal for use in areas with mild winters and hot summers. This is because double pane windows have a low U-value, which means that they are more resistant to heat transfer, which makes them ideal for areas where heating and cooling costs are high.

Triple pane windows are good for areas with extreme temperatures. They have a high R-value and lower U-value, which means they prevent air from transferring through the space between the panes of glass and keep the heat inside your home during cold weather.


Difficult to install

Installation of double pane windows is easier than the installation of triple pane windows. Double pane windows are installed in the same way as ordinary single-pane windows, while triple pane windows need to be installed by professionals.

This means that you will have to hire a professional contractor who specializes in installing these types of windows

Downsides of Triple Paned Windows

Downsides of Triple Paned Windows

Triple paned windows are more expensive than double pane windows, but they are also more energy efficient. This means that you will see a significant decrease in your monthly energy bill and pay off the extra expense within a few years.

Triple-paned glass is a great option for keeping your home warm and insulated during the winter months. But there are some downsides to triple-paned glass that you should be aware of before you make a decision to upgrade. Here are some of the main downsides:


The biggest downside of triple-paned windows is their cost. Triple-paned windows can be twice as expensive as single-paned windows, which may be a turnoff for homeowners who are looking to save money with their window replacement.

Difficult to install

Another downside of triple-paned windows is that they can be difficult to install. This is because they require more precise measurements than double-paned windows and are usually more expensive than double-paned windows as well.

If you’re looking to install triple-pane windows in your home or office, it’s important that you hire an experienced contractor who knows how to measure for these types of windows correctly.

Potential condensation between glass panels

Since triple-paned windows are separated by three panes of glass and an inert gas, condensation can occur between the glass panels. This means that it’s possible for moisture from the outside of your home to be trapped between the panes of glass, which can lead to water spots on the inside of your windows.

This is because water vapor in the air inside your home will condense when it comes into contact with a cold surface, such as the glass pane of your double- or triple-paned windows. This can make it difficult or impossible to see clearly through your windows during rainy weather, even if they’re sealed very tightly against drafts.

STC Rating of Triple Glazed Windows

STC Rating of Triple Glazed Windows

Triple glazed windows are the strongest and most durable windows you can get. They have a rating of STC of 50, meaning that they block out more than 50% of outside noise. It’s possible that you won’t even need to wear earplugs when you’re sleeping in your triple-glazed window.

Triple glazed windows are designed to keep your home at a comfortable temperature year round. This is because they have three panes of glass, one on top of another. The first layer is filled with argon gas, which helps insulate the window from heat transfer. 

The second layer has a vacuum between its panes of glass, which further helps prevent heat transfer. The third layer is similar to single glazed windows: it’s made of glass that’s filled with air.

The result is that triple glazed windows provide better insulation than single glazed windows. That means you’ll use less energy, and spend less money, to cool and heat your home. You’ll also save on energy bills by keeping your home warmer in the winter and cooler in the summer months.

Maintenance of Triple Pane Windows

Maintenance of Triple Pane Windows

Triple pane windows require regular maintenance to keep them in good condition and ensure they continue to provide the benefits they are known for. Here are some of the maintenance tasks required for triple pane windows:


Regular cleaning is essential to maintain the clarity and performance of triple pane windows. Dirt, dust, and grime can build up on the glass and frames over time, reducing the window’s energy efficiency and aesthetic appeal. 

It is recommended to clean triple pane windows at least twice a year using a soft cloth, mild soap, and water.

Sealing and Insulation

Triple pane windows rely on a tight seal to prevent air leaks and maintain energy efficiency. Over time, the sealant and insulation can degrade, leading to drafts and reduced energy efficiency. 

It is essential to check the sealant and insulation regularly and replace them if necessary to ensure the window’s proper function.

Repair and Replacement

Like any other window, triple pane windows can become damaged or break over time. It is important to repair or replace damaged windows promptly to avoid further damage to the window or your property. 

Regular inspections can help identify any potential issues and allow for timely repairs or replacement.


Yes, triple-pane windows are more soundproof than single- or double-pane windows. They have three panes of glass instead of one or two, which means that there’s more space between the panes and less air leakage. The extra layer of glass also helps to keep out noise and heat.

A triple pane is probably the most advanced form of window you can get today. Don’t get me wrong. It will not magically soundproof your whole house. If you want to block out some common noises (like traffic, or your neighbor’s dogs barking) it is a good investment to make.

Overall, triple glass windows have their benefits when it comes to soundproofing. They do, however, have a few potential downsides as well, but none of which are particularly severe.

Frequently Asked Questions (Are Triple Pane Windows more Soundproof)

Are triple pane windows worth soundproofing?

Triple pane windows are worth soundproofing if you want to keep the noise out of your home. Triple pane windows are made of three layers of glass, which means they’re more effective at blocking sound than single or double pane windows.

What type of window is most soundproof?

Triple-pane windows have three panes of glass separated by two layers of air, making them the most soundproof type of window available. They’re more expensive than other types of windows, but if you have a noisy neighbor, they may be worth the investment.

What are the disadvantages of triple pane windows?

Triple-pane windows are more expensive and less common than double-pane windows. They also require more effort to install, so if you’re looking to replace your windows with triple-pane models, be prepared to have extra help on hand during the installation process.

Does triple glazing keep noise out?

Yes, triple glazing keeps noise out. Triple glazing is a way to make windows more energy efficient, but it also helps keep noise out. This is because each pane of glass has two layers of air in between it and the next pane, which creates an insulating barrier against outside noise.

Share with your friends
Brendan Ratliff
Brendan Ratliff

As a soundproofing and acoustical professional, I have helped new homeowners, builders and remodelers with their projects. I also help contractors/designers learn how to properly install soundproofing in their clients homes.
I enjoy helping people understand the process of soundproofing and acoustical construction. is a one-stop solution for all of your soundproofing related questions.