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Old 05-29-2012, 12:22 PM   #1
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Ceiling - Green Glue & Drywall for Soundproofing


Please see attached pictures. Would it be possible to attach a 5/8" drywall with green glue directly to the sub-roof? Would this cause any moisture or ventilation problems? Code compliant? The main purpose of this project is to block the noise caused by crows walking and pecking on top of the roof. We are not concerned with any temperature related insulation. I have a previous experience in drywall installation, including taping, when I renovated the bathroom. As far as construction codes, I am clueless. Please advise. Thanks
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Old 05-29-2012, 01:25 PM   #2
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Ceiling - Green Glue & Drywall for Soundproofing


Yes you could, and you could also laminate another layer of T&G wood to the original wood, if the two thicknesses of wood were close to the same thickness.

You could also add the drywall layer as you originaly indicated, then add thinner wood to the drywall to re-create what you have now.

The moisture associated with the damping compound isn't cause for concern

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Old 05-29-2012, 01:31 PM   #3
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Ceiling - Green Glue & Drywall for Soundproofing


Thanks for your reply. Would the green glue and drywall block out most of the noise from the crows?
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Old 05-29-2012, 02:41 PM   #4
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Ceiling - Green Glue & Drywall for Soundproofing


Do you know the exact details of this roof's cross section? Does this start with roof shingles on a plywood deck or do you have a steel roof?

What's the roof framing? 2x6 or 2x8 rafters?

Foam or fiber insulation?
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Old 05-29-2012, 02:52 PM   #5
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Ceiling - Green Glue & Drywall for Soundproofing


I havent taken any measurements yet. I just came up with the idea this morning when the crows woke me up. The roof is made with wooden shingles. The rafters look like they might be 2x8 if not bigger. I have to take a closer look and make measurements when I get home. Thanks.
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Old 05-29-2012, 04:57 PM   #6
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Ceiling - Green Glue & Drywall for Soundproofing


This product...

http://www.nationalgypsum.com/produc...ProductID=2353

has the sound dampening material applied during the fabrication of the drywall. It works really well.

You could get a piece and temporarily install it to try it out.
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Old 05-29-2012, 05:19 PM   #7
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Ceiling - Green Glue & Drywall for Soundproofing


Perhaps your intent is to respect the crows' lifestyle, but if that's not the case...wouldn't it be much more cost effective to figure out a way to keep the crows off the roof in the first place? That's a nice ceiling; I sure wouldn't want to mess with it.
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Old 05-29-2012, 05:58 PM   #8
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Quote:
Originally Posted by 7echo View Post
This product...

http://www.nationalgypsum.com/produc...ProductID=2353

has the sound dampening material applied during the fabrication of the drywall. It works really well.

You could get a piece and temporarily install it to try it out.
You would want to damp as much of the original structure as possible. Attaching pre-damped drywall will not do that.

You would have similar mass, more damping and far less cost with standard 5/8" drywall and a field appication of damping compound. And damp some of the original structure to boot.

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