Author Topic: 2nd Story Sound proofing (Studio on top of studio)  (Read 4561 times)

mboo

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2nd Story Sound proofing (Studio on top of studio)
« on: March 28, 2012, 09:43:12 PM »
I own a 2 story home in San Francisco that was built in the late 40’s. I have an inlaw unit with a tenant that is on the first floor and is currently being used as a project music studio.  Directly above that inlaw unit is a bedroom that I plan on making another project music studio. When music is being played in the first floor inlaw, the noise is very audible in the above unit. I was wondering about any cost effective solution’s to prevent most of the noise from coming through the 2nd story hardwood flooring without having to open up the ceiling in the downstairs unit? The studios are primarily used for electronic music, so no live drums and rarely are acoustic instruments used. I’m more concerned with low end  noise from bass lines and drum machines. Thank you in advance!

Randy S

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Re: 2nd Story Sound proofing (Studio on top of studio)
« Reply #1 on: April 04, 2012, 04:22:32 AM »
well my friend bass is bass, depending on SPL (sound pressure levels) will dictate weather or not you have to open the ceiling or not...
Do you have sheet rock ceiling and walls? or lathe and plaster?

It really comes down to how you bump the room so to speak....look at it like hitting the ceiling and walls with a hammer...you can knock out the highs and some mids by just adding mass (MLV-mass loaded vinyl), dampening compound and 5/8" sheet rock.

But if your putting out the db levels then your impacting the structure and you must open so you can decouple from the structure.
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dogmover

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Re: 2nd Story Sound proofing (Studio on top of studio)
« Reply #2 on: June 26, 2012, 01:59:03 AM »
I am new to this forum but I would like to comment on this topic as I am currently building a 2nd story recording studio.  I am a General Building Contractor and have specialized in commercial construction for the last 15 years.  The first floor ceiling has one layer of 1/2" OSB and one layer of 5/8" sheetrock.  There are 2 ft. floor trusses that I filled with blown-in cellulose insulation. The second floor has 1/2: OSB on top of 5/8" sheetrock on top of 3/4" OSB truss sheeting. The control room will 3/4" horse stall matting to finish off the flooring. The studio portion has the same OSB-sheetrock-OSB but the finish floor will be 3/4' bamboo on top of a resilient matting. I hope this give you some ideas. 

Randy S

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Re: 2nd Story Sound proofing (Studio on top of studio)
« Reply #3 on: June 26, 2012, 03:32:36 PM »
thats a good build up for airborne sound but you have no decoupling....your counting on the horse stall mat to stop impact and reduce bass frequencies....let us know how that turns out....
Bass frequencies and impact are the hardest to reduce especially when your trying to do it with just applying mass law which ends up with a quick diminishing point of return...this is why complex structures are used, they eliminate the direct pathways for vibration through the assembly which in turn voids mass law.

if I hit a 8" thick concrete wall with a hammer will you hear it on the other side???
Randy Sieg

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