No, it’s not an art class project. The first time you hear the term “window glazing” you’re probably buying or repairing windows on your home. What exactly is window glazing, who are the window glaziers, and why does it matter?

All About Glass

Window glazing is the name to identify the actual glass within a modern window. Another term you may hear is the glazing compound which is used to attach the glass to a frame. There are various kinds of glazing, with some designed to be more energy-efficient than others, such as double or triple glazing. 

Double glazing is the combination of two panes of glass separated by a gap of air or gas. This differs from laminated glass in that the two panes of glass are separated on the same frame, as opposed to stuck together like laminated glass. 

Low-E and Heat Mirror Glass

There is also the option of adding a pane of glass with gas-filled spacers. This is an efficient solution. Another option is with low-emissivity (low-E) coating. This invisible layer of metallic oxide reduces the heat transfer through the glass. The majority of new windows now have this by default.

Then there is the high-tech heat mirror glazing, which can be as energy efficient as a triple-pane glaze. A sheet of low-E film is placed between panes of insulated glass which creates the “Superglass” effect, insulating better than other options. 

To DIY or Not To DIY

“While glazing is fun its best to leave it to professionals if you want your windows to be properly sealed and safe from shattering,” says Kevin Coad of Desert Empire Mirror & Glass in Coachella Valley. By working with a glazing professional, you can confidently determine which type of glazing will fit your unique needs. 

Something you can do yourself without too much fear of causing damage is replacing the old glazing compound. If your windows are old enough to require this treatment, however, you might want to also be considering installing new windows for energy efficiency and an aesthetic update. 

When to Glaze

If your windows crack or need to be replaced for any reason, it’s time to call a professional window glazier. Consider double glazing for better energy efficiency and proper reglazing when your windows become outdated and the compound is peeling or cracking. This happens often in older homes where you cannot replace the windows for various reasons, including historic preservation. 

If you haven’t required window glazing yet as a homeowner, that day will inevitably come, and its good to do some research to have an idea of what you want for your house.