This looks like, essentially, a rubber-type mat? Seems to do the same thing as Green glue; converts sound energy into heat. I wonder how it could compare cost-wise, per square foor of coverage?

According to information exchanged with Ted in the other thread, you'd likely be better off not having the space at all, unless it's at least (as per Ted's instructions) 2 1/2".

Of course, the nice thing about this Acoustiblok is that they're showing it right up against the studs. Green glue needs to be sandwiched inbetween two hard porous surfaces. If noise transmission (and floor space) were really an issue, I suppose you could use (from outside to inside):

Drywall/Green glue/Drywall/Acoustiblok/stud wall/acoustiblok/drywall/green glue/drywall?

Funny, acoustiblok also make a sound proofing panel which looks a lot like a steel SIP!?

Acoustiblok is a mass loaded vinyl material. There are several manufacturers, and retail prices generally are in the $1.10 to $2.00 psf.

It's mass loaded vinyl? I thought I saw a comparison on the website, saying why Acoustiblok is better than MLV?

If it IS a mass loaded vinyl, I don't think I would even bother with it. I think I would rather spare the extra 6" of floor space to put another 2x4 wall than use that stuff. It certainly helps, but I've been in a room constructed with MLV...it was actually sort of pathetic. Much like the polystyrene timberframe SIP home I was in (in regards to sound transmission)...pathetic.

Yeah, Matthew, if you look through the documents on their site, they define the product as a MLV. They claim that they have some special "proprietary" formulation, but it's still MLV.

http://www.acoustiblok.com/3part/AB_3partSpec_ver_01.8.pdf

Well, I suppose it would still help...Personally though, I think I'd just rather add another layer of drywall with green glue.

I wonder, if a fellow could put rubber isolation strips on the studs before the drywall goes up, what sort of difference that would make.