If you’ve been researching new double glazing, you may have come across references to “argon gas” and wondered what role it plays. At first glance it might sound overly technical, but argon has a big impact on the comfort, efficiency and performance of modern windows and conservatories. Understanding what argon gas is and why it is used in glazing will help you make a more informed decision when investing in new windows for your home.
What Is Argon Gas & How It Fits in Window Glazing
Argon is a naturally occurring, inert gas that is completely colourless, odourless and non-toxic. It makes up just under one per cent of the air we breathe, and because it is readily available, it is a cost-effective choice for improving the performance of double and triple glazed windows.
In a double glazed unit, argon gas is sealed in the cavity between the panes of glass, replacing the air that would otherwise sit in this gap. This cavity is usually around 12 to16 millimetres wide, and argon is particularly effective within this range. The gas works best when combined with other glazing technologies, such as low-emissivity (low-E) coatings, which enhance the insulating properties of the window. In short, argon is an invisible element that helps your windows work harder for your home.
Why Do We Use Argon Gas?
The main reason argon gas is used in double glazing is its ability to slow down heat transfer. Argon is denser than air and has lower thermal conductivity, which means heat does not pass through it as easily. For homeowners, this translates into better insulation, improved U-values, and lower energy bills as your home stays warmer in winter and cooler in summer.
Beyond thermal performance, argon gas offers other advantages. It helps to reduce condensation forming on the inside of the glass by keeping interior surfaces warmer. It can also provide a degree of sound insulation, softening outside noise for a quieter home. Because argon is inert, it is completely safe, environmentally neutral and does not react with other materials in your windows.
Over time, if the seals around the glass unit fail, some of the argon can escape, reducing performance. This is why quality of manufacture and installation is so important when choosing your glazing.
What Buyers Should Know
When choosing new windows, it’s worth asking whether the units are argon filled as standard. Argon is most commonly used in double glazing but is also effective in triple glazed units, where it can be combined with other gases such as krypton for even higher insulation. For the gas to work efficiently, the cavity size between the panes needs to be suitable and the unit must be well sealed.
Homeowners should also be aware that argon does not last forever. While well-made windows typically retain most of their argon for 15 to 25 years, cheaper or poorly sealed units may lose gas more quickly. Signs of gas loss include fogging, misting or condensation between the panes. At that stage, replacement of the glass unit is usually the most practical solution.
At Bingley Windows & Glass, we understand the importance of supplying high-quality sealed units that maximise performance for the long term. Our argon filled glazing is carefully manufactured to industry standards, giving homeowners peace of mind that their investment is protected. We also support our trade customers by providing consistent, reliable units for every type of project.
Final Thoughts
Argon gas may be invisible, but its effect on the performance of your windows is clear. By slowing down heat transfer, reducing condensation, and improving comfort, argon filled double glazing is a smart choice for homeowners looking to upgrade their property. While it isn’t the only factor to consider, frame quality, coatings, spacers and installation all play a part, argon gas makes a significant difference to how your windows perform.
If you’re considering new double glazing for your home, it’s worth asking about argon filled units and choosing a supplier you can trust. At Bingley Windows & Glass, we pride ourselves on offering high-quality, energy-efficient solutions for both homeowners and trade customers. Get in touch with our team today to find out more about how argon filled double glazing could benefit your home. Use our contact form here, or call us on 01535 958 183 and one of our friendly team will be happy to help.