What does double glazing do? Double glazing is really a form of window that is made up of two panes of glass with a small hole between them. The hole is crammed with air or an insulating fuel like argon. Remember, not all window brands permit a lot of customization https://reidkjcrd.alltdesign.com/sound-insulation-double-glazing-can-be-fun-for-anyone-46791808