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post #1 of 10 Old 10-23-2013, 08:21 AM - Thread Starter
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I have an existing basement ceiling that has 2 layers of 1/2" drywall (no green glue), connected directly to the floor joists. Will I receive any noticable sound deadening by adding a 3rd layer of drywall with resilient channels on top of the existing ceiling? The new darwood floors above are driving me crazy.

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post #2 of 10 Old 10-23-2013, 09:38 AM
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First the design you propose is a triple leaf which can work against you, you want a fix you need rip down the ceiling and start over. In this case use solution level 5 diagramed at the soundproofingcompany.com. Attach two layers of DW directly to the bottom of the sub floor then add clips and hat channel then two layers of 5/8 eith GG.
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post #3 of 10 Old 10-23-2013, 06:05 PM - Thread Starter
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eek.gif
Thanks, but that won't be possible, budget won't allow a 1,000' sq. ft. demo & do ever.

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post #4 of 10 Old 10-23-2013, 06:08 PM - Thread Starter
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Will another layer of drywall without the clips and green glue help.

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post #5 of 10 Old 10-23-2013, 06:37 PM
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define help, I'm sure with the right test equipment you could measure an improvement. Will it cut the sound in half? doubtful.
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post #6 of 10 Old 10-24-2013, 01:59 PM - Thread Starter
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I'm looking for an improvement of between 25 - 50%. I was originally hoping for more.

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post #7 of 10 Old 10-25-2013, 07:22 AM
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Quote:
Originally Posted by BIGmouthinDC View Post

First the design you propose is a triple leaf which can work against you, you want a fix you need rip down the ceiling and start over. In this case use solution level 5 diagramed at the soundproofingcompany.com. Attach two layers of DW directly to the bottom of the sub floor then add clips and hat channel then two layers of 5/8 eith GG.
I agree with Big and if you are careful when you take down the existing drywall by cutting along the floor joists you can reuse it as Big suggested. Look how Tim did his http://www.avsforum.com/t/1442340/the-stonewater-cinema-build-thread/250_50#post_22887842
I only have about 3k in sound proffing but that was with IB-1 clips and hat channel on three walls and the ceiling and IB-3 clips on my decoupled double wall at the back of theater. Half of that cost was Green glue but to me well worth it.
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post #8 of 10 Old 10-25-2013, 01:33 PM - Thread Starter
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You all are making me pause, rethink, and possibly reload. My dilemma is that my room is not a dedicated theater, it's an open area with a wet bar in the middle, pool table on the other side. Windows on 1 wall (3 - 45" by 40") on one side of the TV area. I don't think I can afford to get the acoustics right, just trying to quiet the friggin hardwood down.

Time to rethink....
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post #9 of 10 Old 10-25-2013, 02:16 PM
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You may want to post a few pics and/or draw out the entire space. That will help you get the best advice from everyone on here (plus, we like to look at pictures...rolleyes.gif).
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post #10 of 10 Old 10-25-2013, 06:30 PM - Thread Starter
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Under the soffit area is approximately 7.5' high. Soffit free areas are 9' high.
Width across window to wall is approximately 15.25' feet.
Distance to theater seats approx. 10' from TV Screen.
There are bunches of angles, no rectangles here.


EdL


This is the view from the left side facing the Theater area.
Lside.JPG 270k .JPG file

Straight back from behind the bar.
Bside.JPG 250k .JPG file
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File Type: jpg Bside.JPG (250.3 KB, 5 views)
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