Article • January 19, 2026
Are Double-Glazed Windows Worth It?
By IMSU Team
If you’re building a home in 2026 and looking to improve its energy efficiency rating, you’ll likely consider double-glazed windows.
New home builds in Australia are required to achieve a minimum energy efficiency rating of 7 stars under the Nationwide House Energy Rating Scheme (NatHERS) as part of the updated National Construction Code (NCC) 2022.
While double glazing can help achieve this rating, many new homes are achieving it with single glazing, leaving many homebuilders to question if the added expense is worth it.

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What are the core benefits of double glazing?
Double glazing has become a popular upgrade for homeowners looking for long-term value. By using two panes of glass separated by an insulating gap, double-glazed windows enhance overall comfort and efficiency in your home.
Below are the of the key benefits we cite to clients interested in double-glazing:
Improved energy efficiency
A significant advantage of double glazing is improved thermal performance. The insulating gap between the window panes helps reduce heat loss in winter and limits heat gain during warmer months. This creates a stable indoor temperature, reducing reliance on heating and cooling systems and lowering energy bills. Over time, this can help reduce household carbon emissions.
Better soundproofing
Double-glazed windows provide effective insulation against external noise. This is especially valuable for homes near busy roads or situated in dense urban areas. The additional glass layer and an air- or gas-filled gap absorb sound, creating a quieter indoor environment without sacrificing natural light.
Increased home value
Installing double glazing can enhance both the appearance and performance of your property. Buyers are increasingly prioritising energy efficiency, making double-glazed homes more attractive on the market. This upgrade can improve resale value while signalling quality construction and adherence to modern energy efficiency and sustainability standards.

What to consider when choosing double glazing
Homebuilders Australia-wide are overwhelmingly positive about whether double glazing is worth it.
But, like most things, deciding what your home build should include is ultimately a personal decision that depends on a few factors:
The specific climate conditions
Climate plays a key role in selecting the right double-glazing solution. Colder regions may benefit from coatings and gas fills designed to retain heat, while warmer temperatures may prioritise solar control to reduce heat gain. Choosing glazing suited to local weather ensures maximum performance year-round, but the different types are offered at different price points, a significant consideration for many.
Upfront and maintenance costs
While double glazing typically involves higher upfront costs than single glazing, it often delivers long-term savings through reduced energy use and minimal maintenance. Considering lifecycle costs rather than just the installation price can help homeowners assess overall value and return on investment. One thing worth noting is that the cost of double glazing can increase significantly if you decide to retrofit it later.
Home build location
The location and orientation of your home influence glazing choices. Factors such as sun exposure, wind patterns, and surrounding noise sources should guide decisions on glass type, frame materials, and window placement to achieve the best balance of comfort and efficiency.

Build a home that’s worth it
With a process informed by emerging design movements and shaped by practical building experience, we create homes that feel timeless from the very beginning.
One of the most significant advantages of building with IMSU is that we tailor the design to your specific needs. Our flexible process gives you room to express yourself and design a home that’s not only personal but genuinely functional.
At IMSU, it’s our job to deliver your vision.Get in touch with our friendly team today.
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