Resilient channel question

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jonothon

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Just been reading here about resilient channel. I bought a bunch of it for my new rooms, haven't installed it yet. But now I'm wondering. I've got double walls or staggered studs everywhere. Will I still benefit from RC, or does the separation I've already got going to make it a waste of time and effort?
 
a few more questions i almost forgot.

1) Are there any special precautions to take when using resilient channel on ceilings?

2) RC will support up to 3 layers of drywall? even on a ceiling? Is it mounted 16" center?
 
If you have 2 walls already with proper studs staggared, then your ok... Resiliant channeling is a way to do that using less space, and less lumber..

Instead of building 2 complete walls with an airspace, you build one, and then screw the channeling on top of it, and then screw another layer of drywall onto the channeling...

Yeah, it will hold 3 layers.. just make sure it's staggered and enough screws...

EDIT>> Actually, come to think of it, im not sure of you can layer resiant channeling like that....

First, you put wood studs, up, and then drywall over them.....

Then, the RC screws through the drywall into the studs, and then you put drywall over that...... but then you have no studs in between the RC, so I don't see a way to stagger the next layer of RC....

Hmmmmmmmmmmm.

I will leave the rest of this for the studio building pros...
 
Jonothon,

You can also check out the U.S. Gypsum website for additional info on all types of construction. They have a specific chapter on "Resilient Framing" which basically gives you requirements for putting channel on wood studs, ceilings included.

http://www.usg.com/

I'd tend to agree with the other posts, though--if you're already doing a staggered stud wall an additional wall with RC channel seems like overkill, IMHO.

Alex
 
There is a Netherlands based acoustic designer named Eric DeSart on this site who says NO to triple leaf construction - I have yet to find time to check it all out, but here's the link to one of several discussions. Having a wall with drywall, stud, drywall, RC, and drywall = a triple leaf wall. If you can't remove the inner drywall and put the RC directly on the studs, forget it - at least, that's what I get so far, check it out... Steve

http://groups.yahoo.com/group/acoustics/message/5148
 
This is what I've gleaned as well. It makes sense when you think about it. That interior layer of drywall attached to the studs isn't isolated from anything so you're losing the benefit of the channel. From a practical standpoint as well, it would be difficult to find and install screws the right length to pierce the channel flange but not the underlying layer of drywall.

Alex
 
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