Upgrade your timber windows with state-of-the-art Vacuum Insulated Glass (VIG) for exceptional thermal performance, noise reduction, and energy efficiency — all without compromising the look of your heritage home.
VIG is the next generation of double glazing technology, offering superior insulation, soundproofing, and durability. Ideal for sash, casement, and awning timber windows, it dramatically improves comfort while maintaining your window’s original aesthetic.
Sydney homeowners are increasingly choosing vacuum-insulated glass (VIG) as a superior alternative to traditional double glazing when upgrading their timber windows. Many original timber windows were built with thin, fragile single panes that provide very little insulation, leading to significant heat loss in winter and heat gain in summer.
They also tend to have poor acoustic performance, allowing street and traffic noise to easily enter the home, while condensation and dust can build up inside over time. In addition, older single glazing can present safety and security concerns due to the weakness of the glass.
Because traditional timber windows were never designed to meet modern performance standards, upgrading to VIG can dramatically improve thermal efficiency, reduce external noise and enhance safety, all while preserving the original appearance of the window.
Up to 6× better than standard double glazing, keeping your home warm in winter and cool in summer.
Blocks external noise for a quieter, more comfortable environment.
Toughened, Grade-A safety glass for added security.
I am very happy with the knowledgeable service and attention to detail of the IWWS team. We have had a significant reduction in the temperature during the current heat with the recently installed vacuum insulated glass that was retro fitted to the casement windows. Highly recommended!
Maree Wilkins
The guys did a great job restoring our beautiful old windows and installing the new vacuum insulated glass. The whole team was friendly, professional and really easy to deal with. The windows look great and now function phenomenally too.
Siobhan McKenzie
After upgrading our timber windows with IWWS, we’ve already noticed a great difference in temperature regulation. On the few really hot days, the inside surface stayed around 23°C while it was 35°C+ outside! Even without the AC running, the temperature rise was 2–3°C lower than before, which is a huge energy saving. Can’t wait to see the full performance in winter!
Marko Mojsin
We get a lot of questions from homeowners who want better comfort, less noise, and improved performance from their existing windows—without replacing them. Below are some of the most common things we’re asked about our services and approach.
Vacuum insulated glass is an advanced glazing technology that uses two panes of glass separated by a vacuum layer. Because heat cannot easily transfer through a vacuum, the glass provides exceptional thermal insulation and noise reduction while maintaining a very slim profile suitable for traditional timber windows.
Yes. Vacuum insulated glass is specifically suited to retrofitting into existing timber windows such as sash, casement and awning styles. Its ultra-thin design allows it to fit within traditional timber frames while dramatically improving performance.
Vacuum insulated glass can provide up to six times better thermal insulation than standard single glazing and often outperforms conventional double glazing. This helps keep homes warmer in winter, cooler in summer and reduces the need for heating and cooling.
No. One of the key advantages of VIG is its thin profile, which allows it to be installed within existing timber frames without altering the original appearance of the window. This makes it ideal for heritage homes where maintaining the traditional look is important.
Yes. VIG significantly improves acoustic performance by reducing the amount of external sound that passes through the glass. Many homeowners notice a substantial reduction in traffic, street and environmental noise after upgrading.
Yes. Because vacuum insulated glass improves the thermal performance of the window, the internal glass surface remains warmer. This helps reduce condensation forming on the inside of the glass during colder conditions.
Vacuum insulated glass uses toughened Grade-A safety glass and is designed for long-term durability. Modern VIG units are engineered to last 25 years or more while maintaining their insulation performance and structural integrity.