Hi guys,
I'm basically copying John's 'small studio' viewtopic.php?t=5457
My outer leaf is core filled block.
When looking at Johns sketchup file of the 'small studio' there doesn't seem to be a significant air gap between leafs (leaves???) on every wall (between rooms there is).
Am I missing something? When putting the plasterboard on the outside of the frame wouldn't you have to leave at least a 2" gap between the block and the plasterboard?
I'm trying to save as much space as possible and every inch counts so if for some reason I don't have to leave an air gap I'd be interested (and grateful!) to hear why.
Thanks,
Adam.
question about 'insideout walls' on small studio
Originally posted at johnlsayers.com, topic 18211.
On that design, John is only showing the treatment inside the rooms, and the isolation wall between them, but he is no showing the rest of the isolation wall around the rooms.When looking at Johns sketchup file of the 'small studio' there doesn't seem to be a significant air gap between leafs (leaves???) on every wall (between rooms there is). Am I missing something?
4" is about the minimum you want for decent isolation, maybe as little as 3" in some cases, but certainly more than 2". However, John does not show any plasterboard on the other walls! He ONLY shows plasterboard on the wall between the two rooms. ALL of the other walls are simply room treatment, not the inner-leaf of the isolation walls. There is no other plasterboard shown. If you turn off the "plasterboard" layer in the "Layers" window of Sketchup, you'll see that there are only two pieces, and they are both on the dividing wall: all the rest is just cloth.When putting the plasterboard on the outside of the frame wouldn't you have to leave at least a 2" gap between the block and the plasterboard?
Unfortunately, you do have to leave an air gap if you need isolation, and 4" is about as small as you want it, for decent isolation. - Stuart -I'm trying to save as much space as possible and every inch counts so if for some reason I don't have to leave an air gap I'd be interested (and grateful!) to hear why.
Thanks Stuart for your reply.
I guess my next question then would be.... wouldn't I actually have more room by NOT using inside out walls?
Not really, because you still have to account for the acoustic treatment inside the room. If you build inside-out, then your acoustic treatment fits into the stud bays mostly, and takes up no actual room space at all (or very little). If you build conventionally, then you have to add that on top of the drywall, and that does take up space. The difference between the two methods is not huge: just a couple of inches on each wall, usually. But in a tight space, a couple of inches can actually make a big difference, acoustically. - Stuart -wouldn't I actually have more room by NOT using inside out walls?