Noise reduction for a concrete box
December 26, 2012 7:40 AM Subscribe
Hometheaterfilter: How much soundproofing do I need to do in a concrete box?
posted by bfranklin to home & garden (8 answers total) 2 users marked this as a favorite
I'm looking to convert a room in my basement to a home theater. The room is basically a concrete box. Poured cement floor, 4 hollow CMU walls, 2 windows in the CMU walls, and a poured (not hollow-slab) ceiling for the garage overhead. The floor is a single pour for the entire basement (whole house).
I like film, so there will be plenty of that, but I'm really worried about noise control when I have a bunch of rowdy folks over for prime time sports games while kids are sleeping upstairs. I want to eventually carpet the room. I want a livable, enjoyable space rather than an austere listening room. Also, I already have the message that a solid core door is key.
I'm thinking that, at minimum, a floating slab using something like Owens Corning quietzone underlayment will be necessary for managing bass. I'm just trying to get a feel for where the cost/value is sitting for things like studs that decouple the drywall, cotton fiber batting for the walls, and the variety of ceiling solutions.
I'm a numbers guy, so if there's an acoustics engineering 201 you can point me at, I'm more than happy to play with formulas. I just need some real-world testimonial reference points for what numbers constitute an acceptable range for my case. An X dB reduction is something I understand abstractly, but pretty much means jack to me from a "will this annoy my sleeping child" perspective.