Double Glazed Windows: Cost, Benefits & Is It Worth It?
You can have the best heater in the street, but if the warmth is leaking straight out through thin glass, you're paying to heat the backyard. Windows are one of the weakest parts of most Australian homes when it comes to keeping heat in or out. That's where double glazed windows come in. Double glazing has been standard in cold countries for decades, and it's quickly becoming popular here too, especially in Melbourne, Canberra, Hobart and the Adelaide Hills. But it isn't cheap, so it's fair to ask whether it's really worth the money. This guide explains how it works, what it costs in 2026, the cheaper alternatives and how to decide if it's right for your home. What is double glazing? A double glazed window has two panes of glass instead of one, separated by a sealed gap. That gap is usually around 12mm wide and filled with dry air or a heavier gas such as argon. A spacer bar runs around the edge and holds a moisture absorber so the glass doesn't...
