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  1. #1
    Member pluto's Avatar
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    Building soundproof recording studio/rehearsal room!

    I am in the process of finishing a 40m2 room which will be a recording/rehearsal room in the back of my house. The walls are up (Q-con blocks) then I am using some insulation material sandwiched in between the second internal q-con blocks wall. My question which is the best material to use for insulation?...I have looked at PU foam, which is useless for the walls....I used it for the roof..it is ok for that purpose. I have also looked at 150mmthick rolls of "Stay cool" rolls but I am not sure it does much in terms of soundproofing? I also looked at 50 mm glassfiber boards with aluminium foil on one side....I don't think they will do the job. Does anyone know which is the best material to sandwich within the walls? Loud music will be played at odd hours of the night...therefore it is essential to have a fully soundproofed room. Thanks for the tips!

  2. #2
    Thailand Expat jandajoy's Avatar
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    google is good.

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    dirtydog's Avatar
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    Polystyrene?

  4. #4
    Thailand Expat jandajoy's Avatar
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    egg boxes?

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    eggboxes

    ^ doh..

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    melvbot's Avatar
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    Depends on the budget I guess. There an expanding foam that can be injected into the cavity similar to what builders and glaziers use to fix windows in position. Not sure of the availability of it here.

  7. #7
    Thailand Expat jandajoy's Avatar
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    Quote Originally Posted by splitlid
    eggboxes ^ doh..
    Why "Doh"?

    We built a rudimentary studio a few years back and lined the walls and ceiling with egg boxes. Having increased the surface area by lots it proved to be very effective and cheap.

  8. #8
    Fag an bealac!
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    your main problem will be bass sounds which cause vibrations, the most efficient way would be to construct stud walls with no mechanical fixing to your Q-con blocks, leave a 50mm void between the stud wall and exsisting wall. build your stud framework and use rockwool, then apply a layer of soundboard, its a more dense gypsum board, after that you must completly seal the first layer tape the joins and silicone all the edges at the floor walls and ceiling. for a drop ceiling you need to mount your hangers on rubber to stop vibrations and use the same method of a double layer of gyp rock.

    any power outlets and light fixture should be surface mounted as any penitrations in
    your walls or ceilings will effect your sound proofing. there are better ways to do it but they cost a lot more money

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    Fag an bealac!
    flash's Avatar
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    egg boxes don't really prevent sound from escaping they stop the sound from rebounding of the flat surfaces, gives you a better sound quality

  10. #10
    Thailand Expat jandajoy's Avatar
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    Quote Originally Posted by flash
    egg boxes don't really prevent sound from escaping they stop the sound from rebounding of the flat surfaces, gives you a better sound quality
    looked good with psychadelic paint job

  11. #11
    Fag an bealac!
    flash's Avatar
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    another thing to consider is mounting your speakers on springs with a rubber damper if wall mounted, or on a rubber mat if sitting on the floor.

  12. #12
    Thailand Expat jandajoy's Avatar
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    ^ yeh we did that too.

  13. #13
    Member pluto's Avatar
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    ^^^ any power outlets and light fixture should be surface mounted as any penitrations in
    your walls or ceilings will effect your sound proofing. there are better ways to do it but they cost a lot more money Today 05:13 PM


    They just put all the wiring in conduits today and planned to let them run between the two walls and fiberglass.....so that is not going to work?

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    Member pluto's Avatar
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    So far I have come to the conclusion of using in this order from the exterior wall.....egg cratelike panels-fiberglass board(50mm)-stay cool fiberglass blanket in foil(150mm)-interior qcon block wall.....

    Flash knows what he is talking about and he just made my heart skipped a beat...I got to rip all the conduits out tomorrow morning......damn!

  15. #15
    Fag an bealac!
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    ^^not the best way really, the holes that you will have to put in your walls will let the sound escape, plastic conduit is better than steel as well as it won't carry vibrations. if you can get them to change it and run conduit on the outsides of the walls and ceilings it will me much much better

  16. #16
    Fag an bealac!
    flash's Avatar
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    better to use 2 layers of 5/8 soundboard(its a light blue colour in the uk and Usa) rock wool, the 50mm viod is important as the air space will damp any sound that gets that far

  17. #17
    Fag an bealac!
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    anothe small thing you can do is put a bead os silicone on your studs before putting on your sheet rock, this will do 2 things, it will dampen the sound and leave you needing less screws, the less holes you put in your sheetrock the better, remember also if you use the double layer method i mentioned to stagger the joins so the joints don't match up on each layer. you have to think of it as if you are sealing it for water, sound will find any holes or gaps just like water.

    silicone is very cheap, use more than you think you need

  18. #18
    Fag an bealac!
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    don't know if its just your external walls that are made of the q-con blocks, if not this is a good method for soundproofing for inside your own house

    (the squigly lines are rockwool weaved between the studs)
    its called a staggered stud system, it eliminated sound because the walls aren't connected to each other so the vibrations won't carry.

    make sure you use a solid door too, the hollow core ones are useless, ideally you should use 2 doors opening opposite ways.

  19. #19
    Thailand Expat jandajoy's Avatar
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    Shit, wouldn't a few pairs of good quality head phones and a mixing desk be easier?

  20. #20
    Thailand Expat jandajoy's Avatar
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    Let alone cheaper.

  21. #21
    Fag an bealac!
    flash's Avatar
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    you can't be a rock god wondering around in headphones

  22. #22
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    Quote Originally Posted by melvbot View Post
    Depends on the budget I guess. There an expanding foam that can be injected into the cavity similar to what builders and glaziers use to fix windows in position. Not sure of the availability of it here.
    Exactly what Melvbot has suggested would be perfect.

    Double skin walls and by injecting the fluid foam through small holes effectively insulating the walls.
    As you apparently have single skin solid walls maybe the only option you have is the one suggested by JJ.

    Or this > and solid stone walls and those used at Rockfield Studios in Wales


  23. #23
    Fag an bealac!
    flash's Avatar
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    people always assume that stuffing insulation into walls will prevent sound from carrying, you need to create a void, you need some airspace. 6 foot thick walls will always work best but thats not an option for most people

  24. #24
    Thailand Expat jandajoy's Avatar
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    Quote Originally Posted by Loy Toy
    Rockfield Studios in Wales
    Miles from anywhere, with no neighbours. Perfect sound proofing.

    What about a boat in the bay?

  25. #25
    Thailand Expat jandajoy's Avatar
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    Quote Originally Posted by flash
    thats not an option for most people
    And you have to move to Wales !

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