The basics of Double Glazing is the quite simple to explain. You have two panes of glass, an outside pane and an inside pane. In the middle there is a gap of air. That gap can be just air or it can be pressurised with some kind of gas. If gas is used it’s likely to be argon gas.
Some people think that laminated glass is Double Glazing laminated glass. This is not the gas. Laminated glass is exactly what the name describes. It’s glass with a laminate coating. You don’t have two panes of glass like you do in Double Glazing.
Laminated glass is two panes of glass that are stuck together with a layer of plastic in between the two. So it’s still one pane of glass.
To officially have a double glazed window you need the two panes of glass in the same frame. And those glass panes are separated by an air pocket of gas. And to confuse you even more there is something called secondary glazing. This is basically fake Double Glazing. While more efficient that single glazing it’s pretty much just designed to mimic the effects of Double Glazing but it’s far from the real thing.
So hopefully this keeps things simple. In short, Double Glazing it two panes of glass in the same window frame that are separated. It’s that simple!
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