Not necessarily!I was thinking a room inside a room but that would knock off 4 inches of height from the ceiling and also 5/8 inch (drywall). So Im looking at loosing 5 inches which would make my ceiling 6foot 6 inches tall.....
If you build your ceiling "inside out", then you don't lose that height. "Inside out" means that the drywall goes on TOP of the new joists, instead of underneath, so you gain the entire depth of the joists as usable space inside the room. You then use that for your acoustic treatment, which you would need to do anyway, regardless of how you hang the ceiling, so the final height of the bottom surface of your acoustic treatment will still be at the exact same height as it would have been if you used clips and hat channel.
With this "inside-out" method, the drywall can be just an inch or so under the existing floor joists above you, which is roughly where it would be if you used RC, and in fact is HIGHER than it would have been if you used clips+hat channel...
If you do not put ceiling joists on top of the walls, then yes you probably will need something like that, or sway braces. But if you build the walls right (good sheer strength)and put your new ceiling on top, then you don't need them.Do I need any other clips? I found these ib-3 clips to stableize the walls to the joists above. Do I need these? If so how many?
Nope. Forget those.And then I found these ib-4 clips to decouple my walls to the concrete slabe and to connect the walls together.... do I even need these?
If you do a search on the forum for "inside out ceiling", you'll find numerous references, so you can see how it is done.
- Stuart -
From the photos it looks like it might be...