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Old 3rd July 2012, 06:09 PM   #1
DrDyna is offline DrDyna  United States
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Default Drywall screws - Not enough?

Hey guys!

I'm essentially looking for opinions on the best way to attach drywall to studs. As I've been working on my media room, I've noticed that in a couple of places my drywall has developed an annoying tendency to "loosen" from the studs.

For example, the walls right next to where I have my 2 rear t-tqwt subs located, at high volume, the drywall loosens up from the studs so that it vibrates a little bit. My cure for now has just been to add more screws to it, but in a few key locations, I've had to use 8 or 10 screws to keep the drywall from pulling away from the studs and vibrating, and my fear is that they'll just pull loose again.

Is there a simple product or method for building walls and structure in an area like a media room that's specially designed to keep things tight and vibration free? I've thought about going around behind some of the walls and running a bead of liquid nails between the studs and drywall, but is this really the best method?
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Old 3rd July 2012, 06:22 PM   #2
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DrDyna,

Does it appear that the screws are backing out (unscrewing themselves), or is the drywall disintegrated behind the screw heads?
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Old 3rd July 2012, 06:28 PM   #3
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Quote:
Originally Posted by 454Casull View Post
DrDyna,

Does it appear that the screws are backing out (unscrewing themselves), or is the drywall disintegrated behind the screw heads?
The screws seem like they're solid and my mud over them isn't coming loose, but there's still a few sections of wall next to the subs that I just can't seem to shore up. The drywall might be coming loose, but it's hard to tell. I don't see dust anywhere.

For example, there's one section that's right next to my right-rear sub enclosure that on certain upper bass notes, like a techno drum beat, where the wall just makes a rahh rahh rahh sound. It's very audible from the MLP. If I press on it with my hand and lean with body weight it quiets down, but it really just sounds like it's rapping against the studs.

It leads me to think that I've either used too thin of drywall (5/8ths) or I've missed some important step that should be taken for audio-centric rooms.
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Old 3rd July 2012, 06:45 PM   #4
evanc is offline evanc  United States
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Use pl2000 polyurethane construction adhesive to glue the drywall to the studs. The screws will hold the drywall up until the glue dries. 5/8" is plenty thick enough. Glueing the sub floor to the floor joists is also a good idea for a squeak free floor.
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Old 3rd July 2012, 06:48 PM   #5
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Dry Wall is only what it says it is.

If you were building a decent kitchen you would arrange for the kitchen cupboards to be attached to the vertical studs and not the dry wall.

If you are hanging heavy loads or vibrating loads you need to locate noggins or studs behind their mounting points.

At the very worst you might need to re-do the dry wall after putting in some prominantly placed support beams. They dont need to be load-bearing but they do need to take-the-load of whatever you are hanging on the wall.

Consider the dry-wall as a piece of paper, it is only there for decorative purposes.
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Old 3rd July 2012, 07:07 PM   #6
DrDyna is offline DrDyna  United States
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Quote:
Originally Posted by KatieandDad View Post
Dry Wall is only what it says it is.

If you were building a decent kitchen you would arrange for the kitchen cupboards to be attached to the vertical studs and not the dry wall.

If you are hanging heavy loads or vibrating loads you need to locate noggins or studs behind their mounting points.

At the very worst you might need to re-do the dry wall after putting in some prominantly placed support beams. They dont need to be load-bearing but they do need to take-the-load of whatever you are hanging on the wall.

Consider the dry-wall as a piece of paper, it is only there for decorative purposes.
Well, when I did the walls I pretty much just did the standard 16" on center studs. They're attached to the header and footer studs with 3" wood screws and all the footer studs are attached to the concrete floor (I'm in the basement) with 4" concrete screws.

I really tried to build to code but it seems like it's just not tough enough.

I guess what I'm thinking is maybe pull a few peices of drywall down and use some cross studs and build a checkerboard behind the walls. Really, I'm just curious to know if anyone else has ran into issues like this.
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Old 3rd July 2012, 07:11 PM   #7
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Quote:
Originally Posted by KatieandDad View Post
They dont need to be load-bearing but they do need to take-the-load of whatever you are hanging on the wall.
On this issue specifically, I have nothing hung on any walls at the moment, it's just the walls directly beside where I have my subs that are being unruly.
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Old 3rd July 2012, 07:24 PM   #8
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You might have the unfortnuate condition of resonance where the dry-wall is just resonating and shaking itself to bits. A few more studs and noggins will sort that out.

Last edited by KatieandDad; 3rd July 2012 at 07:29 PM.
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Old 3rd July 2012, 07:30 PM   #9
jcx is online now jcx  United States
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anyone with experience with Green Glue NOISEPROOF YOUR LIFE | Green Glue

makes a constrained layer damping system by gluing a 2nd sheet over the 1st layer of drywall, the glue is claimed to be viscoelastic

could reduce resonance amplitude

Last edited by jcx; 3rd July 2012 at 07:40 PM.
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Old 3rd July 2012, 07:30 PM   #10
DrDyna is offline DrDyna  United States
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Quote:
Originally Posted by KatieandDad View Post
You might have the unfortnuate condition of resonance where the dry-wall is just resonating and shaking itself to bits. A few more suds and noggis will sort that out.
This was my suspicion as well. I was hoping someone wasn't going to say "you tard, you're supposed to put _____ between the studs and drywall!

Looks like I'm just going to have to go stud happy.

Perhaps there should be a seprate building code for audio rooms?



Thanks fellas.
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