"Twayne" wrote in message
...
In ,
...... Just work around the interference things,...., If you use 2 x
instead of 1 x you'll be able to use a much more effective (thicker)foam
for the sound deadening......,
Doors, windows at each end shouldn't be a problem; just work around them.

It's hard to describe in a post like this, but there is no way to "work
around" what's there and build out a wall that is even 1 to 1 1/2 inches
thick. There's a door to the basement that is attached to, and
perpendicular to, the party/dividing wall -- and the hinges to that door are
no only 1 1/2 inches from the existing wall. Adding anything more than just
the 1/2 to 5/8 inches of sheetrock would interfere with that door and the
door can't be moved or made smaller. The front door to the house is similar
but with just a little more room. Same for the built-in kitchen cabinets.
I can't get away with adding more than about 1/2 to 5/8 inches there.