Hey all, first post but long time reader. I was hoping that I could but in and get some comments that might be helpful to the original poster as well. I'm currently building a garage with an apartment above that will be used as a private studio. Exterior dimensions of 30x24. Second floor will be built on TJI's. It will have 9 ft. walls with vaulted ceiling at a 5/12 pitch. apartment will be one room ( no separate control room ), just a bathroom that will double as an iso booth. My main question deals with the floor (can't be a slab). Any suggestions. Thanks, Moose