Soundproofing during renovation

Discussion in 'General Home Improvement Discussion' started by hairball, Mar 26, 2012.

  1. Mar 26, 2012 #1

    hairball

    hairball

    hairball

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    Hi, all

    I am renovating a duplex that has an upper and a lower apartment.

    The upstairs is now done and has wood floors. My intentions is to fix up and rent out the lower apt. but the sound tranmission between the floors isn't going to be fun for either tenant.

    Right now I have the lower apt. stripped including the ceilings so i have some flexibility with what I do.

    All noise is trasmitting, from footsteps to radio noise. The old ceiling was just drywall with hollow cavities between the joists.

    Rugs are one option upstairs which is fine, but I don't want to cover the whole floor so I want to find a way to make sound travel less.

    I can't afford to pay acoustic companies, so I'm looking for a solution appropriate to a small basement apartment. I had considered glass fibre in the cavities and a couple of layers of drywall, but I guess i need to get some mass on the celing to calm down the vibrations' travels.

    If anyone has any cost effective solutions then I'd be grateful to hear (read) them.

    Thanks
     
  2. Mar 27, 2012 #2

    asbestos

    asbestos

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    Just regular drywall is not that great at stopping sound. There are systems out there that go with drywall to reduce noise transmission. They are generally some sort of clip, or rail that keeps the drywall for the joists. There are quite a few options out there.
     
  3. Apr 1, 2012 #3

    Ted White

    Ted White

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  4. Apr 3, 2012 #4

    hairball

    hairball

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    That's very useful, thanks. I'll have a think about that solution. Looks cheaper than the heavy vinyl stuff.
     
  5. Apr 4, 2012 #5

    Snoonyb

    Snoonyb

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    Filling the joist bays with unfaced insulation, followed with 1 layer of soundboard and 1 layer of 5/8 will go a long way to solving your problem.
    Do not compress when filling.
    Also check US Gypsum.
     
  6. Apr 4, 2012 #6

    StainlessRailingGirl

    StainlessRailingGirl

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    I wish my neighbors were considerate enough to think about this topic.
     
  7. Apr 9, 2012 #7

    hairball

    hairball

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    Thanks!

    I am not familiar with 'soundboard' is that a type of drywall?

    I've seen soundproof drywall at Lowes. it looks like a double layer, but costs 5 times as much as the normal stuff. Is it similar to that?

     
  8. Apr 10, 2012 #8

    Snoonyb

    Snoonyb

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    You'll not find this product at the "big boxes", you'll have to go to a reputable drywall supplier.

    Here is the site;http://www.bpcan.com/en-CA/search/?s=bsnat85

    Locally its about $9.00 a sheet and 5/8 drywall is $8.00 a 4x8 sheet.

    Locally is the "truly left coast".
     
  9. Apr 12, 2012 #9

    92sb4x4oh

    92sb4x4oh

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    You can also check out Roxul Safe and Sound. Besides the sound conditioning it also provides some fire stopping. Depending on the size it may be well worth the expense.
     
  10. Sep 24, 2012 #10

    drewdin

    drewdin

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    I went with the Roxul Safe and Sound, I recommend it. What did you end up using?
     
  11. Sep 24, 2012 #11

    Ted White

    Ted White

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    Soundboard will not do the trick. Fiberglass insulation is as good as it gets.
     
  12. Sep 24, 2012 #12

    drewdin

    drewdin

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    hey Ted,

    Is there a specific insulation you recommend? Or any fiberglass insulation will do the trick? I have used Roxul, but i am willing to try some other options if they are cheaper. Thanks
     
  13. Sep 24, 2012 #13

    Ted White

    Ted White

    Ted White

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    Generally R13 fiberglass in a wall, or R19 in a ceiling. Avoid labels that say "acoustic" or "sound control." Just get the cheapest stuff you can find
     

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