Scroll down for pics of the framing. I would like to thank Steve Pinckard, one of my best friends for helping me out... he's was a huge help. Below is a diagram of the staggered stud wall we used, compliments of my forum and e-mail buddy Ken Bruce. We used 5/8" fire-coded sheetrock on the outside wall with double sheets on the inside wall and ceiling.





This is the double door
design we used:





The garage door screwed and silicone sealed very tight:

We had to sheetrock the back side of the north wall prior to lifting it up and attaching it in place:





North wall installed:

Existing west wall where we tore out the old sheetrock and added staggered studding:






Looking in from the outside.... east wall with door entrance:






Inside look at the east wall:






South wall and ceiling:

The green arrow points to a 2 X 4 that is secured to the roof truss system. There is ½ rubber expansion joint material between the 2 X 4 and the ceiling joist. This is the only part connect to the existing ceiling. The new ceiling comes within a quarter inch from the existing ceiling. Expansion joint is used to help isolate most of the room.

Close up of the staggered stud isolation at the floor. The new stud does not touch the existing base plate. The new base plate is isolated via the rubber expansion joint material from the existing base plate as well.

Close up of the upper staggered studding on the existing wall. Rubberoid separates the stud from the top plate. Again, expansion joint is used to isolate the top plate from the existing wall.