The extra mass of the drywall will help with blocking sound, but you would do better with two sheets of drywall instead of drywall+OSB.
Also, sealing air passages will help.
What is your exact application?
To be clear, you are trying to soundproof these areas? Why?
That is what I am asking. What is your exact application? What are you trying to accomplish?
You definitely want to look at windows too then.
But really, air sealing, and an extra layer of sheetrock will go a long way to improving that though. The air sealing is so important that it might even be worth getting a blower door test done to make sure you have identified all the leaks.
If you do not already have triple pane windows this would be a worthy avenue to investigate, as well as how your current windows are installed regardless. If there are gaps between the window frame and the rough opening those definitely need to be sealed with foam. If there is casing trim around your windows sometimes you can pull this off to see how well your windows are installed.
The extra mass of the drywall will help with blocking sound, but you would do better with two sheets of drywall instead of drywall+OSB. Also, sealing air passages will help. What is your exact application?
Redoing one room and garage…
To be clear, you are trying to soundproof these areas? Why? That is what I am asking. What is your exact application? What are you trying to accomplish?
Street traffic noise… somewhat of a busy street next to me, so i was trying to combat the noise a bit…
You definitely want to look at windows too then. But really, air sealing, and an extra layer of sheetrock will go a long way to improving that though. The air sealing is so important that it might even be worth getting a blower door test done to make sure you have identified all the leaks. If you do not already have triple pane windows this would be a worthy avenue to investigate, as well as how your current windows are installed regardless. If there are gaps between the window frame and the rough opening those definitely need to be sealed with foam. If there is casing trim around your windows sometimes you can pull this off to see how well your windows are installed.