Should we use quite rock or 2 layers of drywall??

What would the better option be a product like quiet rock ro 2 layers of 5/8" drywall. Or would a combo be better like quiet rock and 1/2" drywall?? isolation is very important!

glad to see that thanks for the link... what do you think the best multilayer drywall options are 2 layers 3 layers, what thicknesses do you recomend? thanks dave

It all depends on how much soundproofing you need. Some are trying to isolate a vocal booth, while others are isolating a full rock band with acoustic drums.

Do a search for the NRC paper on drywall partition construction and acoustic performance. There's more than enough data to sift through there (around 250 pages of results alone). Like Sharward said, the amount of drywall you want to put up depends on what your goals are. Just bear in mind the frequency range of the instrument(s) that you need the most isolation for. For example, acoustic drums pump out a fair amount of energy below 100 Hz (in fact 60-80 is right around the fundamental for many kick drums). Bass guitar goes down to 40Hz (for a 4 string). Just for fun, if you have the tools available look at a frequency spectrum of your band (or instrument) playing in your space. Odds are you'll notice that the low frequencies are much stronger than the higher frequencies. Then, take a look at the transmission loss curves from the NRC data, and you'll see that wall performance is just the opposite, lots of isolation at high frequencies, and poorer at lower freqs. One thing to remember is that it's likely the weakest link in your room design that will determine it's overall effectiveness at isolation. So, strong walls and a weak ceiling may be no good (an issue I'm currently trying to wrestle with). Cheers, Kris

What Frankencopter was refering to: http://irc.nrc-cnrc.gc.ca/fulltext/ir761/ Enjoy! Andre

ok cool... i will take a look at that in the mean time just some opions what would you do in this case. We are aiming for good isolation for a room that will just have mid field studio monitors and isolated boothe. No tracking but isolation is important. Thanks Dave

Dave: You have given absolutely no objective data on to base any recommendations. We have provided with a link to over 349 wall designs with actual test results. Without any concrete points from you,we can not give any accurate recommendations. Andre