I was wondering if people are using this product and layering drywall on drywall to isolate sound from room to room or reduce vibrations in the room? I am not concerned about sound getting out of my room since it's in the basement and I'm single but am really trying to cut down on rattles and vibrations in the room. I have already put up the drywall and used liquid nails on all the studs before putting the drywall up and it seems solid but I don't want to get subs in there and regret not having done something that could have made the room more resonance free. Any advice is appreciated.

The primary purpose (really) for sound isolation in these rooms is to reduce sound transmission into the room.

The fact that green glue absorbs kinetic energy says it can reduce structural rattles; however, it will not eliminate them. Many rattles come from places you wouldn't necessarily think about ... loose electrical wires through framing, pipes (of various types) running through framing and coming in contact with the framing, electrical fixtures, and, of course, poor fiitting framing.

Green Glue is intended for sound isolation (sound traveling between the rooms). If your not concerned about that then the liquid nails that you used should be fine. Green Glue isnt going to do anything for sound inside the room.

I have read a lot about green glue on AVS, but i'm not sure it is best for my situation. Anyone have advice?

We are refinishing the basement, and due to space constraints, the HT equipment will be in the main area, but it will not be in an isolated room. The tv and speakers will be directly below the family room upstairs. I was planning to do the ceiling in the main area with double half inch rock and green glue, but not the walls. This alone is about 600 sf.

Now, I realize that the walls (even though they are not attached to other rooms - it's the basement afterall) probably need it as well to keep the studs from vibrating. Furthermore, we have installed can lights throught the basement (about 12). In addition, there is a second living space that is open to the main area, but "around the corner." It's in an L-shape.

I am thinking now that unless i sink a considerable amount of dough doing the whole area, including building boxes for the cans, it's probably not worth it.

anyone have experience or thoughts?

Thanks

Is it better to just put up one layer of cement board instead of green glue and 2 layers of drywall?

I plan to put home made acoustic panels on top of the cement board.

I am thinking now that unless i sink a considerable amount of dough doing the whole area, including building boxes for the cans, it's probably not worth it.

anyone have experience or thoughts?

Thanks

Unfortunately, sound isolation is mostly an all or nothing proposition. If it were me, I would not bother treating the ceiling without treating the walls and I would not do can lights at all.
The analogy commonly used with sound isolation is that the room is like a fish tank. Any one hole and the water (sound) leaks out and you are left with dead fish, (people). Or something like that. :D

Is it better to just put up one layer of cement board instead of green glue and 2 layers of drywall?

Not if your goal is sound isolation.

I plan to put home made acoustic panels on top of the cement board.

Great! Though keep in mind this does not help with sound isolation.

thanks.