I need to close an opening and I am not sure the best way to do it.
The goals are
- Low cost
- Good sound insulation
- Easy to take apart with minimal damage to the existing walls.
It doesn't have to look perfect
edit: my original thought was to attach drywall panel to each side of the opening (bout 7 inch apart) and to screw them to the preexisting frame without using additional studs. To remove, unscrew the screws, fill with mud and paint again. what do you think of this solution?
edit: task mostly done. I probably need to paint it or hide it behind a curtain. but is is up and block sounds pretty well. I used the two plywood system of the selected answer without weather striping.