It isn't just the second pane and the argon gas, your old leaky windows that allowed your drapes to shake around when it was windy allowed the sound to go through the same gaps. I have double pane glass windows and before I spray foamed the gap around them things were quite a bit louder in the house, I could hear the neighbor when he would be yelling from the mailbox to his wife and kids in the garage like I was right there and if I played even moderately loud music in the house I could hear it outside. With things sealed up I can still hear the neighbor when he raises his voice to talk from a distance but I can't tell what he's saying anymore. Being sealed makes a big difference too for both the efficiency and being less audible outdoor noise in addition to the double pane argon gas setup.
|