Author Topic: fake ceiling vs sound-proofing ceiling framing  (Read 2442 times)

john111

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fake ceiling vs sound-proofing ceiling framing
« on: August 05, 2014, 11:06:24 PM »
Hello,

I'm trying to decide how to sound proof my ceiling from noisy neighbors living upstairs.
It's my house so I can do any modifications I want.
The Problem is: heavy things dropped on the floor,jumping,running,home theater ,loud music.
My ceiling is made out of wood framing,with plaster and lath.

Option 1:I would remove the existing ceiling a install sheetrock(green glue)  on the floor deck,use sound isolation and then install sheet rock(green glue)  on the clips. IT IS JUST TOO MESSY PROCESS i think.

Option 2: I would install 2x4 or 2x6 fake ceiling just one inch below my existing plaster ceiling.Then i would use sound proofing  fiber isolation and green glue sheetrock directly on the framing without sound clips ,possible with the sound clips,it if still make sense on the fake ceiling.

How would option 2 perform compering to option 1?

Thank you,

John,

Randy S

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Re: fake ceiling vs sound-proofing ceiling framing
« Reply #1 on: August 05, 2014, 11:24:30 PM »
option 2 will do nothing but waste your money unless you gut out the lathe and plaster , lathe and plaster connect all 6 sides of the cube and allow the sound to release anywhere it wants...get rid of it !

1) pre seal with acoustical caulk any gaps or holes
2)insulation in the cavity
3) Mass loaded vinyl stapled to bottom of joist wall to wall tape and seal with acoustical caulk
4) isolation clips and hat channel
5) 2 layer of 5/8" drywall with green glue in between. 1/4" perimeter gap to be filled with acoustical caulk no hard connections.

Soundproofing from impact noise is very difficult therefore if your are going to attempt to do this type of project it is best to do it right the first time.

feel free to call me direct if you have any more questions.
Best Regards,

Randy S.
760-752-3030 ext 104

Randy Sieg

Super Soundproofing Co
www.soundproofing.org
888-942-7723
Ph. 760-752-3030
Fax.760-752-3040

john111

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Re: fake ceiling vs sound-proofing ceiling framing
« Reply #2 on: August 06, 2014, 12:22:23 AM »
"Mass loaded vinyl stapled to bottom of joist wall to wall tape and seal with acoustical caulk",

So if I do this step,can i eliminate Sheetrock directly to the wood deck, as it shows on the greenglue website?

Randy S

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Re: fake ceiling vs sound-proofing ceiling framing
« Reply #3 on: August 06, 2014, 07:29:39 PM »
the sheetrock in between the joist is completely worth the work and adds to the overall reduction.

We do this step quite often, you must be careful not to have screws penetrate the subfloor and you must caulk the perimeters in the cavities.

Remember you will still have noise coming out of the sides and bottom of joist as well this is what the MLV will reduce before it gets to  the final sheet rock layers.
Randy Sieg

Super Soundproofing Co
www.soundproofing.org
888-942-7723
Ph. 760-752-3030
Fax.760-752-3040