drewdin

I really like the Roxul Safe and sound, its more money but very easy to work with and can be found at the box stores. I have it all over my house

Roxul Safe and Sound

CallMeVilla

I would take a look at an interesting drywall product that is engineered to be sound absorbing. It has a polyester layer in the middle that cuts sound transmission dramatically. You can caulk ceilings and floors if you want to get crazy ... with acoustic caulk.

http://www.homasote.com/products/440-Soundbarrier.aspx?gclid=CJjnrsKQ_bUCFelaMgodHHYADw

You need to buffer all receptacle penetrations in the walls too.

Ted White

That appears to be a re-marketing of the age-old classic Homasote 440. Very low mass - low isolation. There may be a chewey damping layer in between, but damping two lightweight boards is minimally impactful.

I strongly suggest looking at double 5/8" Type X drywall. There's no lightweight soundproofing.

__________________
Ted White

http://www.SoundproofingCompany.com

Ted White

I take it back. It's 100% cellulose, so it's the same old H440 and no damping layer.

__________________
Ted White

http://www.SoundproofingCompany.com

oldognewtrick

So, in your opinion, is this stuff any good or not?

Ted White

It's good on floors, however I wouldn't use it in a wall, no. For this you want mass.

__________________
Ted White

http://www.SoundproofingCompany.com