Triple Glazed Windows vs. Double Glazing: The 2025 Comparison Guide
Windows are an important mention of homes too. Not only do they add aesthetic value, but they also control the amount of sunlight that enters your home, and heat that stays trapped, etc. depending upon the season. This is why people opt for triple glazed windows and double-glazed or paned windows. These windows are different from your usual single-paned windows. Let’s explore more about this below.
Why is Window Glazing Necessary?
Glazing refers to the process of installing glass panes in your window frames. It is necessary since it helps insulate your home against the cold, and from the heat. Generally, people opt for double-glazing and triple glazing in NI, depending on their needs.
That’s because these windows trap the heat during winters, and prevent excessive heat from coming in during summer.
By doing so, they help you save on your electricity bills since you use your heaters, or air conditioners less due to the properties of the windows.
What is Triple Glazing and Double Glazing?
Continue reading to know more about what triple and double paned windows are below.
Let’s read more about them below.
Defining Double Glazing
When installers fit two glass panes into a single frame, the process is known as double glazing. These windows have become the standard type of installation preferred by most people nowadays.
For instance, as per a report by Ulster University in 2022, more than 61% of homes had double glazed windows from before 2006, 26% of homes had double-glazed windows from after 2006 and 9% of homes had partially double-glazed windows.
The frame these windows are set in is generally made of uPVC, timber or aluminium, etc. Furthermore, these windows have a gap of at least 12 square millimetres between them that is filled with inert gases like argon, etc.
Explaining Triple Glazing
As compared to double-glazed windows, triple glazed windows have 3 glass panes set into a single frame and are separated by air pockets of argon, krypton, xenon, etc.
They usually trap more heat in the winter, and keep the house cool in summer, as compared to double-glazed windows. Additionally, they are used more in Northern Ireland due to the cold weather there. Furthermore, they have an A++ rating.
Let’s now understand some key discrepancies between triple glazed windows and double-paned windows below.
Key Differences between Triple Glazing and Double Glazing
While you might feel that both styles are appropriate for your home, you might be unable to decide which style to go for. However, they have some well-defined differences that you can consider below to make up your mind.
Energy Efficiency Comparison
triple glazed windows can help increase your energy savings by between 40% and 60%. On the other hand, when you install double-glazed windows, you can save between 39 and 53% of your energy.
So, on average, you can say that opting for triple-paned or glazed windows can help you save more energy and reduce your electric bills, though this will again be determined by which area of Northern Ireland you live in.
For example, if you live near the coast, then you will require triple-paned windows since the winters can be quite cold there.
Noise Reduction Performance
Double-glazed windows can reduce up to 35 decibels of sound, which can lead to a peaceful atmosphere. This means that you can block out sounds of light rainfall, whispers of wind, street sounds, and sounds along this spectrum with the help of these windows.
So, if you live in a busy neighbourhood, you can opt for these windows without any hesitation.
On the other hand, triple glazed windows can block between 40 and 50 decibels of sound. This means you can block out bird sounds, the sound of electrical transformers, etc. with these windows.
Durability
triple glazed windows have 3 panes set in a single frame, with air mm gaps between them filled with inert gases like argon, xenon, krypton, etc. The presence of an extra gap in them compared to double-paned windows makes them sturdier.
Furthermore, the frames of windows are made of materials like uPVC, etc. which make them more durable than double-paned windows.
Maintenance
Both triple glazed and double-glazed windows are easy to maintain, because of features like being resistant to dust and not requiring more than 1-2 sessions of cleaning annually. Additionally, they frame them easy to maintain without having to worry about repairs, etc.
Triple Glazed Windows Cost vs. Double Glazing Price
Now that you know about these windows, let’s consider how much you will have to spend when you install them.
Cost Overview
The triple glazed windows price will depend on the number of windows you have, the size of your property, the frame material and other specific information.
However, you can get in touch with our team for a quote if you have any doubts regarding the cost of triple glazed windows or double-paned windows.
Long-Term Savings
Now, you might have to invest more to install triple glazed windows due to the additional glass panes as compared to double-paned windows. However, in the long run, these windows can help you save a lot of money, owing to their high heat-trapping features.
That’s because you can enjoy higher energy efficiency between 40% and 60%, and trap up to 35% more heat, compared to double-paned windows. This will reduce your dependence on heaters during the cold winter, and help you save a lot more on your electricity bills.
In contrast, you can only save between 39 and 53% of energy with double-paned or glazed windows. This is why we would recommend choosing triple glazed windows since they would help you save energy.
Advantages of Triple Glazed Windows in 2025
When you install triple-pane windows, you can enjoy the following benefits:
- Energy Savings: As mentioned previously, you can save between 40% and 60% of energy when you opt for triple glazed windows. This means that you can pay a reduced electricity bill.
- Reduced Disturbance: These windows can block up to 50 decibels of noise, so you can enjoy a peaceful stay in your home, and expect a higher quality of sleep, as well, that will contribute to an improvement in your mood.
- Improved Security: Since these windows have layers of extra insulation due to the glass panes, they are sturdier than double-paned windows. So, you cannot break them easily.
- Increased Property Value: Since these windows are often considered a premium feature, you can enhance the value of your house when you install these windows. This will help you fetch a good price when or if you decide to sell them.
Advantages of Double-Glazed Windows in 2025
When you install double-pane windows, you can enjoy the following benefits:
- More Warmth in Winter: You can enjoy an increased degree of insulation when you opt for double-paned windows due to the air gap between the two glass panes. This gap contains a noble gas in the form of xenon, argon, etc. which traps the heat. So, you can enjoy a comfortable stay inside your home.
- Decreased Condensation: You do not have to worry about condensation when you install these windows, since the inner glass pane will maintain the same temperature as the house. So, you can avoid issues like mold, or mildew that are caused due to condensation.
- Reduced Electricity Bills: Since you save between 39 and 53% of energy with these windows, you do not have to use a lot of electricity.
- Easy to Maintain: You can maintain these windows easily since they are made to last.
Making the Right Choice for Your Home in 2025
Finally, how do you decide whether to opt for triple glazed windows or double-paned windows? Continue reading to know more!
Factors to Consider
You should keep the following parameters in mind before you choose between these windows:
- Number of windows in your home
- The overall value of your property
- Frame material
That’s because the final cost will hinge upon these factors. You can get in touch with us if you want a clearer opinion.
Choosing a Trusted Installer
The service you opt for should have the following characteristics:
Extensive Range of Services
This will determine whether they can satisfactorily fulfil your needs or not. For instance, you should choose a company that offers an extensive service range including providing doors, patio doors, roofline products and glass panes, like our brand.
Easy Consultation
You should not have to struggle through the consultation process when you contact your desired agency. So, when you choose our organisation, you can:
- Select your desired type of window yourself or take our ‘Perfect Windows’ challenge
- Schedule a home visit or send us your window measurement details
- Have us survey your home
After that, we will begin the process.
Customer Reviews
This is important to understand how other customers have benefited from the service. For instance, our customers have left positive reviews on our website.
The Final Word
Hence, you can enjoy greater benefits when you opt for triple glazed windows as compared to double-paned windows, as they help you increase your energy savings, lead to more insulation and prevent unwanted noise from entering your home.
Don’t hesitate to get in touch to enjoy a 10-year warranty on our workmanship, 20 years on our uPVC frames, pocket-friendly prices and more!