Double Glazed Windows and Doors with clear glass



It’s no secret that windows and doors are a vital element of a home’s design. They provide a connection with the outside world, introduce natural light and airflow, and contribute to the overall aesthetic. Many homeowners opt for the more affordable standard single-glazed windows and doors. This blog explores the 5 benefits of selecting double glazing for windows & doors.


Double glazing windows and doors have two glass panes bonded together by a spacer and separated by a gap between 6mm to 20mm.

The gap is hermetically sealed and filled with argon to provide an added insulation layer. Ideally, double glazed windows and doors should use toned or low-E glass to improve their performance.

Structurally, the gap between these separated panes is the critical difference between double-glazed and single-glazed windows and doors. Yet, the real difference lies in the unique benefits of double glazing.


What is double glazing


Double-glazed windows and doors are popular in colder climates like Victoria and Tasmania.

Still, many people don’t realise they are an incredibly energy-efficient solution for all Australian climates.

While some energy-efficient products can only reduce heat loss or gain—or both—inefficiently, quality double glazing is different.

Its unique insulation properties keep the home cooler in summer and warmer in winter by limiting the hot or cold airflow between the two panes. Not only does this make the home comfortable year-round, but it also helps minimise reliance on artificial heating and cooling.


Windows and glass doors play a crucial role in your home’s energy efficiency.

It’s estimated that almost half of all heat loss during winter and nearly 90% of heat gain during summer can come from windows and doors.

The unique design of double-glazed products insulates against heat and cold up to four times more effectively than single-glazed windows and doors.

The space between the two panes of glass acts as a thermal barrier between your home and the outside environment. It prevents warm or cool air from escaping, maintaining a steadier temperature and insulating you from the effects of climatic extremes.


double glazing window keeps home cooler in summer

double glazing window keeps home warmer in winter


Energy costs have climbed by over 50% in Australia over the last decade. With half the energy used in Australian homes powering heating and cooling devices, keeping cool in summer and warm in winter is more unaffordable than ever.

Australians pay the highest energy prices globally, two to three times more than American households.

The good news is that installing double-glazed windows and doors is one of the most effective ways to make a home more energy-efficient.

Double gazing is such an effective insulator that it can reduce your need for electrical temperature control. This design feature can decrease your power bills by more than 20% compared to single-glazed windows while also helping the environment.

Learn more about choosing energy-efficient windows.


Double glazing can reduce outside noise—from voices, animals, vehicles, planes, trains, and other sources—by up to 60% compared to single glazing.

The World Health Organization has found that exposure to prolonged noise can contribute to stress, sleep and cognitive problems, and health conditions such as cardiovascular disease.

Double-glazed products absorb more sound energy than standard single-glazed products due to the gap between the glass panes. Adding acoustic glass increases the effectiveness of double glazing.

Learn more about noise-reducing windows and doors.


double glazing window reduces noise


Condensation occurs when the moist air inside your home is exposed to a cooler surface, such as a single glazed window.

While condensation is generally just an annoyance, it does have the potential to cause severe problems for your home.

Double glazing products reduce the likelihood of condensation by removing its key cause – a cold window. The interior glass pane stays close to room temperature, reducing your condensation risk.


Double glazing is available in many types of windows and doors. From a traditional style like the double hung window to the popular sliding door or the luxurious bi-fold door, there’s a design and configuration to suit every style of home. You can also choose different coloured glass and hardware to match or complement the window and doors, as well as your internal walls and flooring.

Thanks to their design, our signature range are available in bigger sizes than most windows and doors you’ll find on the market. And importantly, they’re available in double glazing.


As you can see, there are several benefits to choosing double-glazed windows and doors for your home.

Is the cost of double glazed windows worth it? Suppose lower electricity bills, year-round comfort and noise reduction are what you’re looking for. In that case, double glazing windows are a wise investment.

Our experienced consultants are happy to discuss your options, answer any questions, and provide a product comparison quote.

We supply double glazing windows and doors across Australia to Melbourne, Sydney, Brisbane, and Adelaide.

thermal break sliding windows



Windows and doors which combine double glazing and thermal breaks take the benefits of energy efficient windows and doors to the highest level.


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energy efficient sliding doors

Selecting Windows & Doors

Product Selection Guideline

The perfect windows and doors can lift a space from ordinary, to extraordinary. But choosing the right ones for your home or project can be a challenge – especially if you’re new to the process. That’s why we’ve put together this selection guideline.

Written as a simple, easy-to-understand reference, this guide will help you better understand your requirements, ask the right questions, and find the best windows and doors for your project.


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Product availability, pricing, features, options, sizes, configurations and performance are subject to regional variations, design requirements, and building codes. Images are for illustration purposes only and may not accurately represent the product. Bradnam’s Windows & Doors reserves the right to change, alter or delete any aspect of our products without notice. We recommend visiting a Bradnam’s showroom before ordering to view colour swatches, glass samples and actual products.