Framing exterior wall against concrete foundation
Posted: Tue Feb 08, 2022 7:09 am
I am building my studio in the corner of a basement as a room within a room. So currently the space I will be using has 2 exterior walls that are poured concrete foundation and 2 interior load bearing walls to the other part of the basement that are 2x6.
My question is regarding the exterior walls.
Do I need to frame out an "exterior studio wall" (see the blue arrows) to tie into the load bearing walls to have a completely mineral wool insulated exterior wall ?
Or do I just build the inner room 1" from the foundation walls and load bearing walls ? and consider my outer walls already done ?
My worry was that sound would escape the inner wall along the foundation and to the upper floor above because it would only have 1 wall worth of mineral wool against the foundation ? Its only framing 2 more walls so not a huge deal and want to do it if it will give me some benefit, but if I can save that space in the room I would like to.
I attached a drawing to help better show what I mean.
The 2 exterior walls are (grey walls are the poured concrete foundation) and 2 interior walls (red ones are existing load bearing 2x6 walls). The blue arrows are showing the part I am questioning the need to build ?
My question is regarding the exterior walls.
Do I need to frame out an "exterior studio wall" (see the blue arrows) to tie into the load bearing walls to have a completely mineral wool insulated exterior wall ?
Or do I just build the inner room 1" from the foundation walls and load bearing walls ? and consider my outer walls already done ?
My worry was that sound would escape the inner wall along the foundation and to the upper floor above because it would only have 1 wall worth of mineral wool against the foundation ? Its only framing 2 more walls so not a huge deal and want to do it if it will give me some benefit, but if I can save that space in the room I would like to.
I attached a drawing to help better show what I mean.
The 2 exterior walls are (grey walls are the poured concrete foundation) and 2 interior walls (red ones are existing load bearing 2x6 walls). The blue arrows are showing the part I am questioning the need to build ?