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Author Topic: Using Auralex Sheetblok on sub flooring  (Read 3405 times)

johnny g

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Using Auralex Sheetblok on sub flooring
« on: October 30, 2011, 04:56:45 PM »

My studio is currently under construction and is approxmetely 75% complete...my live room and control room share the same floor,
with 2 fully insullated walls, with 4-layers of sheet roock separating the rooms...the sub floor consists of 3/4" tongue and groove OSB... my intent is to install a layer of 1/2" plywood over the OSB, followed by hardwood finished flooring and a backer board with ceramic tile inset for the live room only...the control room will have backer board and ceramic tile only...I'm wondering if I should lay down a layer of Auralex sheet-blok between the OSB sub floor and the 1/2" plywood in the live room to help TL levels in the low frequency range...my concern is LF bleed  from the live room to the control room... Can anybody give some advice in regards to using
the Auralex sheet block limp mass product ?

Randy S

  • Senior Soundproofing Technical Specialist
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    • Super Soundproofing Co
Re: Using Auralex Sheetblok on sub flooring
« Reply #1 on: October 31, 2011, 03:42:42 PM »

You can do a #2 MLV glued down to existing floor then glue down your new plywood.
Here is the link to the same product we carry. you can choose 1lb or 2lb sqft.

http://shop3.mailordercentral.com/supersoundproofing/prodinfo.asp?number=09-00005-45-2R

This will do some reduction into the floor system, however you still have full surface connection.

The best way to reduce LF and impact into your floor would be to decouple the floor(float a new floor 95% decoupled) then add your barrier.

Either way it will be far better than today.
Randy Sieg

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

johnny g

  • Guest
Re: Using Auralex Sheetblok on sub flooring
« Reply #2 on: October 31, 2011, 11:43:29 PM »

I can appreciate your 'sound advice'...However, let me tell you the rest of the story as Paul Harvey would say...
I'm not worried about noise traveling through my floor, because there is only my garage area underneith...
I will be insulating the 2 X 12 floor joists and then cover with sheet rock...
My biggest concern is, will the MLV barrier benefit me in reduction of LF between the live room and control room,
which share the same subflor ? I have double walled construction (fully insulated, and 4-layers of 1/2" gypsum board)
with 1.750" of free air space between the walls.

Thanks again for your comments and suggestions...

Randy S

  • Senior Soundproofing Technical Specialist
  • Global Moderator
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  • Posts: 815
    • Super Soundproofing Co
Re: Using Auralex Sheetblok on sub flooring
« Reply #3 on: November 01, 2011, 12:51:49 AM »

well the real problem is your not fully decoupled. even though your walls are double framed your still on the same subfloor and if you didnt float the drywall on source side then the LF is still free to travel down the stud into footer into subfloor  and go under the wall.

at this point in the game the glue down MLV is the only recommendation I would give...due to floating the floor would not deliver the reduction vs cost.

LF at high SPL will still bleed through your wall connections no matter what.
Randy Sieg

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