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  • Supress Acoustic drywall - anyone heard of this stuff?

    I was discussing some acoustic issues / questions with someone on another forum here at HC and they mentioned this stuff I've never heard of before.

    http://www.supressproducts.com/products/index.htm

    There's no test data on their site that I saw, so I'm going to give 'em a call and see if I can find out more tomorrow.

    Anyone ever heard of / used this stuff? Comments?
    **********

    "Look at it this way: think of how stupid the average person is, and then realize half of 'em are stupider than that."

    - George Carlin

    "It shouldn't be expected that people are necessarily doing what they appear to be doing on records."

    - Sir George Martin, All You Need Is Ears

    "The music business will be revitalized by musicians, not the labels or Live Nation. When the musicians decide to put music first, instead of money, the public will flock to the fruits and the scene will be healthy again."

    - Bob Lefsetz, The Lefsetz Letter

  • #2
    That looks interesting, and no, I haven't heard anything about it. I've always wondered though, what percentage of sound transmission is due to structural vibration. I would think you'd still need to take great pains in isolating your structure from your room.

    I used a layer of 5/8' and layer of 1/2" on each side of my walls double wall construction. Separate sills, resilient channel, sheetrock resting on cork and rubber and the gaps filled with caulk, etc. The only sound that gets out is the kick vibrating through the slab. My 8' ceiling limited any floating floor options.

    Still, I guess if someone were looking to isolate a bedroom for instance, and had little room to work with it could be interesting.
    __________
    Ain't no sacrilege to call Elvis king
    Dad is great and all but he never could sing -
    Jesus

    Comment


    • #3
      I agree. I am trying to find the sound specs on standard sheet rock.

      I would think a multiple layer system of sound board covered with sheet rock would work better than simply adding one dense layer to an existing wall. The change in density would seem to work better.

      Also, they show their product simply attached to an existing wall with sheet rock screws. That is a direct transfer of sound through the two layers.

      I also built my floating walls with staggered studs, resilient channel and two layers of 5/8" sheetrock on each side. Each layer sealed and taped before adding the next. It makes for eight inch thick walls.. but boy they sure work well.

      For covering outer existing walls, I put a layer of sound board, then three quarter inch furring strips, resilient channel and two layers of 5/8" sheet rock. I stuffed the cavety with pink insulation. That wall is ten inches thick and dead quiet. I have a full drum kit and bass amp just inside that wall and my neighbor who lives twenty feet away, has never heard us rehearse, until I open the outer doors.

      From everything I have read, it is a change in density that gives the greatest isolation. A sheetrock/soundboard/sheetrock sandwich on an existing wall ..glued, NOT screwed would seem to be a much better system. Even a sheetrock/acoustic vinyl/sheetrock wall would be better... I think.

      How spendy is that stuff?
      Mark
      "Do that again....Open your mouth and make your face disappear"..

      Comment


      • #4
        I've used this before, which seems very similar-

        http://www.quietsolution.com/Products/Construction___Building/QuietRock/quietrock.html

        They claim this stuff has a minimum STC of 51dB!!!! It's fire rated and also THX approved (not that big of a deal actually...). Keep in ind that that that STC rating is for a complete wall...

        Here's the rub- It's the seams that kill you in an installation. I always recommend using a vinyl sound barrier-

        http://www.acousticsfirst.com/vinyl.htm

        if you used both, you're in the mix, Big-Time.

        -Todd A.
        My Rig:

        EAW LA325's (2)
        EAW LA400's (4)
        QSC PLX 3402 (2)
        QSC PL1.8
        QSC RMX 2450
        Ashly ProTea 3.24c
        Ashly ProTea 4.24G
        EAW LA212 Monitors
        JBL PRX-512M Monitors
        Whole Lotta Cables

        Comment


        • #5
          Originally posted by The Chinese
          Here's the rub- It's the seams that kill you in an installation. I always recommend using a vinyl sound barrier-


          Or you stagger your seams on a dual layer, one vertical, one horizontal.
          __________
          Ain't no sacrilege to call Elvis king
          Dad is great and all but he never could sing -
          Jesus

          Comment


          • #6
            Exactly.. One layer up, one layer down.

            And I still cannot see how placing a layer of this product over the top of an existing wall and mounting it with sheet rock screws into existing studs could provide that much sound isolation.

            The solid connection between the wall and the studs would transmit low frequencies straight through the wall.. I think.
            Mark
            "Do that again....Open your mouth and make your face disappear"..

            Comment


            • #7
              Originally posted by Lee Knight


              Or you stagger your seams on a dual layer, one vertical, one horizontal.


              Yes, this is a good install technique as well, I would still use vinyl and add that technique, then you're looking at a killer wall.

              -Todd A.
              My Rig:

              EAW LA325's (2)
              EAW LA400's (4)
              QSC PLX 3402 (2)
              QSC PL1.8
              QSC RMX 2450
              Ashly ProTea 3.24c
              Ashly ProTea 4.24G
              EAW LA212 Monitors
              JBL PRX-512M Monitors
              Whole Lotta Cables

              Comment


              • #8
                Originally posted by GZsound
                Exactly.. One layer up, one layer down.

                And I still cannot see how placing a layer of this product over the top of an existing wall and mounting it with sheet rock screws into existing studs could provide that much sound isolation.

                The solid connection between the wall and the studs would transmit low frequencies straight through the wall.. I think.


                You don't use screws to install vinyl, you use glue.

                It's similar to the soundboard install you werre talking about above, but vinyl is more effective than soundboard, uses less space, and is easier to cut to fit. You basically make a sandwich.

                -Todd A.

                Edit:

                Or were you referring to the Drywall?

                My Rig:

                EAW LA325's (2)
                EAW LA400's (4)
                QSC PLX 3402 (2)
                QSC PL1.8
                QSC RMX 2450
                Ashly ProTea 3.24c
                Ashly ProTea 4.24G
                EAW LA212 Monitors
                JBL PRX-512M Monitors
                Whole Lotta Cables

                Comment


                • #9
                  I think he was talking about the drywall, and not the limp-mass vinyl.

                  I used Auralex Sheetblok on a couple of walls in our studio and it seems to have worked as advertised. As Todd said, you glue it instead of nailing or screwing it in place.

                  I've had a few online disagreements with some folks over the multi-layer / different density material approach, but it has never let me down. Isolate it from the structure with res. channel and / or ASC Walldamp (great stuff BTW ) and definitely alternate the orientation of each layer of material - first layer vertical, next layer horizontal, next layer vertical, etc. and you caulk / mud all the seams, you should have a fairly high STC wall when you're done. If it's isolated on neoprene (Auralex U-Boats work well), and if you use either staggered studs on a 2X6 base, or double walls along with the multi-material layering, that's even better.

                  **********

                  "Look at it this way: think of how stupid the average person is, and then realize half of 'em are stupider than that."

                  - George Carlin

                  "It shouldn't be expected that people are necessarily doing what they appear to be doing on records."

                  - Sir George Martin, All You Need Is Ears

                  "The music business will be revitalized by musicians, not the labels or Live Nation. When the musicians decide to put music first, instead of money, the public will flock to the fruits and the scene will be healthy again."

                  - Bob Lefsetz, The Lefsetz Letter

                  Comment


                  • #10
                    BTW, here's a site that gives you a chart of different STC's for walls utilizing different construction approaches:

                    http://soundproofing.org/infopages/soundwalls.html
                    **********

                    "Look at it this way: think of how stupid the average person is, and then realize half of 'em are stupider than that."

                    - George Carlin

                    "It shouldn't be expected that people are necessarily doing what they appear to be doing on records."

                    - Sir George Martin, All You Need Is Ears

                    "The music business will be revitalized by musicians, not the labels or Live Nation. When the musicians decide to put music first, instead of money, the public will flock to the fruits and the scene will be healthy again."

                    - Bob Lefsetz, The Lefsetz Letter

                    Comment


                    • #11
                      And another one, with graphics this time.
                      **********

                      "Look at it this way: think of how stupid the average person is, and then realize half of 'em are stupider than that."

                      - George Carlin

                      "It shouldn't be expected that people are necessarily doing what they appear to be doing on records."

                      - Sir George Martin, All You Need Is Ears

                      "The music business will be revitalized by musicians, not the labels or Live Nation. When the musicians decide to put music first, instead of money, the public will flock to the fruits and the scene will be healthy again."

                      - Bob Lefsetz, The Lefsetz Letter

                      Comment


                      • #12
                        Originally posted by The Chinese


                        You don't use screws to install vinyl, you use glue.

                        It's similar to the soundboard install you werre talking about above, but vinyl is more effective than soundboard, uses less space, and is easier to cut to fit. You basically make a sandwich.

                        -Todd A.

                        Edit:

                        Or were you referring to the Drywall?



                        Yes.. I was referring to the mechanical bond created when you screw the supress product to a sheetrock wall. The sheet rock screws themselves will transmit sound directly into the stud...which will transmit it through the outer wall.

                        I agree with Phil, the wall needs to be de-coupled, not coupled, in order to not transmit vibrations from one layer to the next.

                        I believe that is why high density vinyl would work well also. It is another mass that would not resonate sandwiched between other material that would not resonate.

                        I looked into high density vinyl but it was way too expensive for my needs. Good old staggered studs and resiliant channel worked very well for me at reasonable cost.
                        Mark
                        "Do that again....Open your mouth and make your face disappear"..

                        Comment


                        • #13
                          I've done a lot of research on this stuff. I'm still waiting for the full technical info on the suppress stuff, but I know more about their competitor Quiet Solutions and their product Quiet Rock.

                          The bottom line: I'm almost convinced. I'm waiting on the Suppress band specific info, but I'm about to make a purchase. Here are the details on the Quiet Rock:

                          Overall STC of 50-53 or so. Like every other product, it does better at blocking higher frequencies than lower ones, but even as low as 125Hz it is blocking 33dB. This is based on a pre-existing 2X4 wall with r12 insulation and 1/2" drywall on each side, adding Quiet Rock to the inside.

                          This is very similar in performance to an Auralex wall with resilient channel, sheetblock, and 2 layers of drywall.

                          It is also much easier to install than the Auralex stuff - no demo required, just screw it over the existing drywall and caulk and seal with metal tape. Cost is astronomical - over $100US per 4'X8' sheet, but that actually is cheaper than Auralex wall with mineral fiber and sheetblock.

                          Comment


                          • #14
                            $110 per sheet? Ouch! But then again, if it works as advertised...

                            Thanks for the good post tcornishmn, and welcome to the forums.
                            **********

                            "Look at it this way: think of how stupid the average person is, and then realize half of 'em are stupider than that."

                            - George Carlin

                            "It shouldn't be expected that people are necessarily doing what they appear to be doing on records."

                            - Sir George Martin, All You Need Is Ears

                            "The music business will be revitalized by musicians, not the labels or Live Nation. When the musicians decide to put music first, instead of money, the public will flock to the fruits and the scene will be healthy again."

                            - Bob Lefsetz, The Lefsetz Letter

                            Comment


                            • #15
                              To reduce the sound from my "music room". I used 4 layers of 5/8 drywall, insulating products in the ceiling (blown in), resilient channels, sonopan sheets. I can crank my Marshall and they can't hear it upstairs, it's nothing short of a miracle. It will not stop bass completely but my kids can sleep on the second floor.

                              I also doubles as a home theater room so I can crank the volume on movies and they will sometime hear a rumble here and there...

                              I quite happy with it.
                              My BandMy Tunes, jams and other recordingsAmps:Mesa Boogie Mark IVMesa Boogie Mark VEVH 5153 Mini

                              Comment



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