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Old 05-18-2010, 01:15 PM   #16
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Quietrock and Green Glue for soundproof ceiling


Ted,

Could you elaborate as to how you are backing up your comment? Is there a study that you can reference that you forgot to put in your post?

I know there are many methods and tools to create "sound proofing", and I remember this as one of them. Mass loaded vinyl, iso pads, various insulation materials, etc.

By they way, this is not intended as an argument, I just like to learn as much as I can.

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Old 05-18-2010, 01:17 PM   #17
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Quietrock and Green Glue for soundproof ceiling


No problem whatsoever

http://www.nrc-cnrc.gc.ca/obj/irc/do...r766/ir766.pdf

This is a good place to start.
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Old 05-18-2010, 02:17 PM   #18
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Quietrock and Green Glue for soundproof ceiling


Maybe another point would be of some value. There are 4 elements of sound isolation. Decoupling, absorption (what the insulation does), mass and damping.

Of these 4, absorption brings the least to the table. Typically 2-3 points is all. Surprising, and it seems intuitive that insulation would do more, but that's not the case.
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Old 05-18-2010, 02:56 PM   #19
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Quietrock and Green Glue for soundproof ceiling


Quote:
Originally Posted by Ted White View Post
No problem whatsoever

http://www.nrc-cnrc.gc.ca/obj/irc/do...r766/ir766.pdf

This is a good place to start.
Thank you very much.

It is interesting to see that there was less with the RC on the studs verses between the layers. I wondered if the layer sandwich would have sealed the air penetrations and then the RC and 2nd layer would provide the decoupling, but I see that is not the case.
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Old 05-18-2010, 02:58 PM   #20
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Quietrock and Green Glue for soundproof ceiling


Using RC on existing drywall is incredibly common. And so clearly not a good move. Maybe part of the problem is that no one is promoting the data found by the NRC to designers and architects.

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