"mook johnson" wrote in
:

I've googled this and all the information is aimed at soundPROOFING
the walls. I'd just like to make a decent reduction in the amount of
sound that passes through the walls.

The usual advice is the add another layer of drywall with some
insulation between, put staggered studs so the wall board from one
room does not touch the wall board in the other room, etc etc. All of
these make perfect since and would be very effective at reducing the
sound transmitted but they are major projects.

I'm looking for bang for the buck here.

Right now, I have two bedrooms that share a wall. One has my 1 year
old light sleeper and the other my 3 year old noise maker (toys that
play music and talk). Also both of these bedrooms share a wall with
my living room where the TV is. To make matters worse I have some
hearing damage so I need the TV a little louder than usual so I can
hear what people are saying. Not blasting loud but I can't turn it
down to whisper levels and make out all of the words.

The wall construction is typical with a 2x4 studs between two 1/2"
drywall sheets.

Is there a product that can be blown into the walls through small (say
1-2")holes between the studs, in the top sil (non load bearing sil
from in the attic) or the sheetock itself? I'm thinking of some type
of blow-in insulation to reduce the sound from echoing in the dead
space between the two sheetrock walls.

I've seen several say that when they remodel and put plain old
insulation in there interior walls with nothing else special it made a
notiable difference. I'd like to duplicate that except witout
removing the walls.

any ideas?






Is there a product that can be blown into the walls through small (say
1-2")holes between the studs

Yes. Lots of info at:

http://www.cocooninsulation.com

Got the machine and insulation at the Home Depot. At the time, if you
purchased x number of bags, the machine use was free. I did quite a bit
and it worked out well. Doesn't sound like you may use enough for freebie
use.

I used a hole saw and kept the cutouts. Later I mudded them up and set
back in the holes to dry very slightly recessed. Later mudded over them.
BE SURE to prime these spots before repainting or you will end up seeing
dull circles all over the room.

I don't know if insulating between interior rooms will alter the
heating/cooling transfer.