Sound dampening bedroom wall/ceiling
#1
02-07-22, 09:26 PM
Sound dampening bedroom wall/ceiling
This is my 1st post so apologies if this isn't the right forum or rambling. I have a 4 bedroom modular (not mobile) home which has renters in 3 bedrooms and me in the 4th. The home was made as cheap as possible so some of the material is pretty flimsy. I want to reduce TV noise and voice noise from the other tenants. I need to demo the drywall in one corner of the room to repair some water damage and I want to go the extra mile to work on sound dampening. Here's what I want to do:
1. Resilient channels on the wooden wall studs and ceiling joists, 16" apart
2. 5/8x drywall on all walls and ceilings.
3. Acoustic caulk between seams, Green glue in between sheets and 1/2" drywall on ceilings and 2 interior walls.
4. Insulation in between joists in interior frames and celing joists.
Do I need to use green glue and a 2nd coat of drywall on the non-interior walls?
Will the resilient channels hold that much weight on a ceiling joist?
Should I use Mass Loaded Vinyl as well? I was under the impression it needed to hang limp and I don't have enough space to build a room within a room.
Is there a reason this plan wouldn't work? Is there something I'm missing?
Thanks all
1. Resilient channels on the wooden wall studs and ceiling joists, 16" apart
2. 5/8x drywall on all walls and ceilings.
3. Acoustic caulk between seams, Green glue in between sheets and 1/2" drywall on ceilings and 2 interior walls.
4. Insulation in between joists in interior frames and celing joists.
Do I need to use green glue and a 2nd coat of drywall on the non-interior walls?
Will the resilient channels hold that much weight on a ceiling joist?
Should I use Mass Loaded Vinyl as well? I was under the impression it needed to hang limp and I don't have enough space to build a room within a room.
Is there a reason this plan wouldn't work? Is there something I'm missing?
Thanks all
#2
02-08-22, 09:45 AM
I've built a few sound reducing walls that worked very well. A 2x6 top and bottom plates. A row of 2x4 studs 24 inches on center flush with one edge of the 2x6 plate then a staggered row of 2x4 studs even with the other edge of the 2x6 plate and occurring at the midpoint of the first wall. 5/8 drywall on each side........BUT it may all be worthless with a door between the two rooms. I'm sitting here typing this with such a "party" wall between two units of a condominium and I have never heard sound transmission from the other unit. I'd search for a way to find a way to make a door opening with an STR (sound transmission rating) = to that wall before I started.
#3
02-08-22, 11:34 AM
Group Moderator
Are you sure this will accomplish anything - that the sounds is not coming through the door or HVAC vents?
#4
02-08-22, 01:47 PM
@stickshift
The hollow door is being upgraded to a solid core. Trying to find something for under 400 in the STC 40 range. I have a sweep and threshold on the hollow door, but there's not enough mass to absorb or dampen sounds. The home only has heating, no AC, and the sound I am hearing is coming from the stairs, along one interior wall, TV from next door, or from the ceiling. I do appreciate the input. 
