i've got a space in my attic that i would like to make a soundproof'ish studio for listening to music, watching movies, and most importantly, playing guitar. \nThe space would be 15' x 10 (LxW) and i'd like to make it a room within a room. my main concern is; like many attics, i have a sloped ceiling\/wall (the roof), What i was wondering was if i would need to make this a double wall as well since its going to go up towards the roof and out? Also, would there be any point in making the floor double "walled" like the walls? im not a drum player, bassist, or a bass aholic when it comes to music, so would there be any risk of audio leaking downstairs below the room? \nI was thinking, for simplicity's sake, i'd just build a "room within a room" chamber on the walls, and not worry about elevating the floor or lowering the ceiling.