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Sound Deadening Floor System Values

IronHelix | Posted in Construction Techniques on January 9, 2005 04:49am

Locally the two most common used systems to help with noise control in a bedroom over a bedroom situation are carpet over pad on 3/4 T&G ply on 11 7/8″ I-joist with (A) 1/2″soundboard & 5/8 sheetrock.  OR  (B) RC-1 metal furring & 5/8″ sheetrock?

Does anyone have the STC values for comparison?

Is there another alternative system?

Other suggestions?

Thanks!

 

………………….Iron Helix

 

PS….spent an hour “googling” and about 45 minutes on BT’s horrid search engine and managed to gain no results!


Edited 1/8/2005 9:13 pm ET by Iron Helix

Reply

Replies

  1. billyg | Jan 09, 2005 06:31am | #1

    Lots of ideas below.  Check out the resilient channel on rubber hangers (Looks interesting but I've never used it).

    http://www.soundproofing.org/sales/prices.html

    http://www.soundproofingamerica.com/

    http://www.acousticalsolutions.com/products/blocking/index.asp

    Billy

  2. Wally2 | Jan 09, 2005 06:31am | #2

    I would blow in fireproof paper insulation, it kills the noise, but good.  RC channel if possible.

    Wally2

  3. WayneL5 | Jan 09, 2005 06:35am | #3

    This site is a good reference. http://www.usg.com/Design_Solutions/2_3_4_acoustictips.asp

    You may also want to consider the impact sound rating of the floor as well.  I don't have numbers available, but there are various Homasote products that are good under flooring for reducing the sound of footsteps.

    1. IronHelix | Jan 09, 2005 03:02pm | #4

      Thanks to all for the links....but my problem still lies with showing the customer the best STC ratings for the dollar to be spent...so what I really need is some test values by an unbiased source.

      Several of the links are hi-tech and high dollar...far more than the budget or conditions call for.   The USG site is down or been moved...as I had tried it initially as a source site for data.

      I have an old book copy of usg's that shows methods but attaches no relative values to the systems.

      I'm continuing to explore.....................Iron Helix

      1. WayneL5 | Jan 10, 2005 06:44am | #5

        The ratings are often tabulated in the same publications that illustrate fire ratings.  Try to find a good building supply company that has drywall manufacturers' technical catalogs.  They have pages and pages of assemblies and their ratings illustrated.  If you strike out there, try drywall manufacturer's web sites, or visit the code enforcement office (whose fire rating books may have sound ratings, too) or try a local architect or engineer.  They may let you look at their references for free.

        You'll have to do your own costing.

        1. NotaClue | Jan 10, 2005 08:15am | #6

          Take a look at this site;
          http://www.quietsolution.com/quietrock.htmlThey will quote the STC for using the product in various applications (This is there sheetrock product); they also make a polymer "quietwood" in 4X8 sheets that you might want to use. Web address for that is:
          http://www.quietsolution.com/quietwood.html
          and perhaps more on point to your floor question.No STC, no sound short; we are considering using this in a conversion of an attic to keep the noise down.They have downloadable PDF files with their acoustic testing specs.Is this helpful?
          NotaClue

          1. NotaClue | Jan 10, 2005 10:07am | #7

            Sorry, I was typing fast and put some typos in there:
            "their sheetrock product"andfor "no STC" read as "not a problem with STC---they have lots of downloadable data sheets with test data for each product they put out"Hope this is helpful.
            NotaClue

          2. IronHelix | Jan 10, 2005 02:22pm | #8

            I hadn't thought about visiting an archy...closest one is about 30 miles away, but I need to make a run there anyway for materials.

            Thanks for turning on the "light bulb"...sometimes I'm blind to the obvious!

            ...............Iron Helix

          3. NotaClue | Jan 10, 2005 07:12pm | #11

            Sorry, what's an "archy"?
            Architect?
            Acoustical consultant?
            NotaClue

          4. IronHelix | Jan 11, 2005 01:25am | #12

            Sorry for the abbreviated moniker....architect would be better!

             

            ..................Iron Helix

          5. IronHelix | Jan 11, 2005 06:12am | #13

            Googled into the link for the national association of insulation manufacturers ( http://www.naima.org/pages/resources/library/pdf/BI405.pdf )

            Lots of drawings and variations on systems of construction and STC values.

            I found what I was looking for and will keep this site book marked!!!

            Take a look.................Thanks for the help!!!!............Iron Helix

             

          6. IronHelix | Jan 10, 2005 02:26pm | #9

            I checked out the links....

            Thanks for the hook-up.....................Iron Helix

          7. highfigh | Jan 10, 2005 06:11pm | #10

            The product spec sheets should have the STC info. Otherwise, call the nearest acoustical consultant and they can steer you in the right direction.
            "I cut this piece four times and it's still too short."

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