Glazing refers to paint in the glass. Double glazing is when there are two coats of paint on the glass, and triple glazing is when there are three coats. Triple glazing can mostly be found in airports or a lot of east coast properties. It’s meant to protect from the cold just as much as from the heat. My recommendation is that triple-glazed windows in desert coastal areas don't look good. It looks weird. It looks like when you put a mirror and a mirror together, you can see the layers. It's not something you want in your house. But with something like a double-pane, argon gas window, it looks awesome.