Double Glazing Windows

Upgrade to high-quality double glazing windows for comfort and sustainability. Experience improved insulation, noise reduction, and energy efficiency in your home.

JL Windows specialises in the customisation, installation, and replacement of double glazing windows. With 7 years of experience serving the Melbourne area, we’ve partnered with over 400 builders to ensure our products not only look stylish but also meet the highest standards of quality and safety. For more details, feel free to reach out to us at: 0481-818-785 or

Why use double glazing windows and doors

double glazing windows measurement

Final on site measure

Double Glazing Windows

Double glazing involves using two glass layers in windows and doors, kept apart by a spacer, with a gap ranging from 6mm to 20mm between them. This gap is securely sealed and filled with argon gas, enhancing the insulation of the windows.

Ideal for Any Weather

In Melbourne, double glazed windows are a popular choice for managing indoor temperatures, as they effectively reduce heat loss during the cold winters and keep interiors cool in the summer. This temperature control is due to the barrier created by the two glass layers, which limits air movement.

Reduced Energy Bills

Installing double glazing windows can significantly cut down your need for electric heating or cooling, leading to savings on energy bills. In comparison to single glazed windows, double glazing can lower energy expenses by at least 20%.

Noise Reduction Benefits

Many choose double glazing for its ability to substantially lower the amount of external noise that gets into the home. This can lead to a quieter, more serene living environment, potentially reducing stress and improving sleep.

double glazing windows manufacture

Fast glass manufacturing

double glazing windows assemble

Professional installation

Minimising Condensation

Double glazing can prevent the formation of condensation, which often occurs on single glazed windows due to moisture in the air contacting the cooler surface of the glass. The warmer inner glass pane of double glazing windows stops this condensation from happening.

Cost Factors of Double Glazing

The price of double glazing windows varies based on style, size, and other specifics. JL Windows & Doors prides itself on offering competitive prices and can provide a detailed cost estimate based on your preferences and requirements.

Double Glazing Windows Installation Services

Contact JL Window & Doors for top-quality double glazing windows in Melbourne. We offer consultations and bookings to help improve your home’s insulation and comfort. For more details, feel free to reach out to us at: 0426-902-339 or

Professional Double Glazing Windows Installer

A spacer bar separates the two panes of glass in a double glazing window. We use spacer made of aluminum or a low-conductivity material like stainless steel or composite materials, reducing heat transfer.

The space between the two glass panes can be filled with inert gas, such as argon, krypton, or xenon, instead of air. These gases are better insulators than air, improving thermal efficiency by reducing heat loss.

We apply a microscopically thin metallic coating to one of the glass surfaces inside the insulated glass unit. This coating reflects heat back into the room during winter and out of the room during summer, without significantly reducing natural light.

For frames that conduct more heat (like aluminum), a thermal break – usually a plastic or rubber insert – is used to reduce the transfer of heat and cold through the double glazing windows, enhancing the window’s overall thermal efficiency.


Double glazing windows offer superior thermal insulation compared to single glazing windows due to the additional pane of glass and the insulating layer between them. This results in reduced heat loss during winter and better heat retention during summer, leading to lower energy consumption and cost savings. Moreover, double glazing windows provide better sound insulation, creating a quieter indoor environment by minimizing external noise transmission. Furthermore, double glazing windows offer improved security, as they are harder to break than single-pane windows, enhancing the safety of the property.

Investing in double glazing windows is often considered worthwhile due to the numerous long-term benefits they offer. While the initial cost may be higher than single-pane windows, the energy savings achieved over time can offset this expense. Additionally, double glazing windows can increase the resale value of a property and enhance its appeal to potential buyers. Furthermore, considering their durability and low maintenance requirements, they can provide cost savings over their lifespan. Ultimately, the improved comfort, energy efficiency, and potential savings make double glazing windows a valuable investment for homeowners seeking to upgrade their properties.

The lifespan of double glazing windows can vary depending on factors such as the quality of materials used, installation technique, and environmental conditions. However, on average, well-maintained double glazing windows can last anywhere from 20 to 30 years or more. Regular cleaning and inspection, along with prompt repairs if any issues arise, can help prolong their lifespan. Choosing reputable manufacturers and ensuring professional installation can contribute to the longevity of double glazing windows. Overall, with proper care and maintenance, homeowners can expect their double glazing windows to provide reliable performance and energy efficiency for decades.

Yes, it is possible to retrofit double glazing windows to existing homes, although it may require professional installation and modification of the window frames. Retrofitting involves removing the existing single-pane windows and replacing them with double glazing units. While this process can be more complex and costly compared to installing double glazing during new construction, it offers the same benefits of improved energy efficiency, sound insulation, and comfort. Homeowners considering retrofitting should consult with experienced window contractors to assess feasibility, determine the most suitable window designs, and ensure proper installation for optimal performance and longevity.

To ensure the longevity of double glazing windows, regular maintenance is essential. Start by cleaning the windows regularly using a mild detergent and water solution, avoiding abrasive cleaners that could damage the glass or frames. Inspect the seals and gaskets for any signs of wear or damage and replace them if necessary to maintain the windows’ energy efficiency. In addition, lubricate hinges and moving parts to ensure smooth operation and prevent corrosion. Check for any cracks or chips in the glass and address them promptly to prevent further damage. Finally, consider professional inspection and servicing every few years to identify any potential issues early and prolong the lifespan of your double glazing windows.