Hi all - So I'm going through the design phase of turning 1/2 of my 2-door garage space into a HT. I've been scouring both these forums and over at AVS..trying to get as much info as I can before moving forward. First question is: Is the space 18'long x 11.5' x 8.5' high big enough? I think it is, even though I have a 106" screen already and sit about 13' away from it. Second question is: How do I sound proof the ceiling considering my kid's bedrooms are just above the garage space? I've thought about not joining the 2x6's directly to the existing garage roof, rather suspend by about an inch. The HT roof I've considered drywall->insulation->1/2" drywall->5/8 drywall. Any thoughts on if this will be enough to drown out the vibrations/bass in the bedrooms above? Any help appreciated! Thanks!