Join Date: Aug 2003
Location: Portland, Oregon
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Alright acoustic experts, I need some help.
So I am in the planning stages of my dedicated Home Theater addition (18'Wx22'Lx10'H). I was working with the builder on plans today and had pretty much figured on going with 2x4 staggered studs on 2x6 plates. He tossed out an issue I did not expect in that Oregon requires R-21 insulation in walls now and he did not believe there would be room to hit that R-Value without going with a Spray Foam (don't want)...might be able to get there with blown cellulose, but he doubted it. He is going to check.
He suggested we go with double 2x4 walls and use Whisper Clips to mount drywall to the ceiling since we will do a single ceiling...I will be doing 2 layers of 5/8" drywall with Green Glue in between on walls and ceiling with house wrap, 3/4 Plywood and Hardiplank on the exterior. Room is on a 6" concrete slab.
I am concerned about losing too much space, so I wondered about the gap I need to leave between the walls. To get the space I need, I would only be able to leave about a 1" gap. Is this enough? Does resonance negate the benefits of decoupling here?
Would I be better to go with 2x4 staggered walls on a 2x8 plate instead?
I can do either of those options much cheaper than whisper clips throughout and, according to Soundproofingcompany.com, Double wall is best.
FYI, I am much less concerned with sound getting into the house than I am with sound getting out of the house to the neighbors, although I will be using dedicated HVAC in the theater and will seal the double entry doors as well as possible to minimize transmission to the rest of the house.
As always, thanks in advance!
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.