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Soundproof wall between bathroom and toilet

  • 06-10-2017 1:52pm
    #1
    Registered Users, Registered Users 2 Posts: 7,501 ✭✭✭


    The guest bedroom shares a wall with the toilet.
    The noise transfer from the toilet into the guest bedroom is a lot.

    I will be tiling that wall in the bathroom soon so im wondering is there any way to improve the sound proofing of that wall.

    Im being realistic and dont expect to completely sound proof it but a noise reduction would be nice.

    Any ideas of what i could do to the wall before i tile it?


Comments

  • Registered Users, Registered Users 2 Posts: 9,555 ✭✭✭antiskeptic


    The guest bedroom shares a wall with the toilet.
    The noise transfer from the toilet into the guest bedroom is a lot.

    I will be tiling that wall in the bathroom soon so im wondering is there any way to improve the sound proofing of that wall.

    Im being realistic and dont expect to completely sound proof it but a noise reduction would be nice.

    Any ideas of what i could do to the wall before i tile it?

    Pull the plasterboard off the wall on the toilet side, pack the space between studs with Rockwool. Cut it carefully and accurately so that it's a snug, neat fit - rather than just ramming it in. Pack it so that it's level with the surface of the stud but don't compress it down too much whilst doing so. Ideally the Rockwool will be just proud of the stud, so that subsequent re-plasterboarding presses against the Rockwool.

    Double slab the wall (using plasterboard screws, so as not to crack the plasterboard on the other side) and tile.

    It works pretty well, having done just this in a recent refurb.



    Is the space in the ceiling above the toilet insulated? If not, sound can also go up and over. Dunno how easy that is in your situation

    A snug fit between door and frame stops noise travelling that way. You'd be amazed at how much noise travels through air gaps between door and frame. You could fit some of that Exitex aluminium/rubber draught excluder. It closes the air gaps and thus, prevents noise propagation.


  • Registered Users, Registered Users 2 Posts: 7,501 ✭✭✭BrokenArrows


    Sorry I should have mentioned the wall is a solid single layer brick wall.


  • Registered Users, Registered Users 2 Posts: 6,827 ✭✭✭fred funk }{


    Sorry I should have mentioned the wall is a solid single layer brick wall.

    Maybe the sound isn't been transfered through the wall.


  • Registered Users, Registered Users 2 Posts: 7,501 ✭✭✭BrokenArrows


    Maybe the sound isn't been transfered through the wall.

    It is. Standing beside the wall I can clearly hear the sounds.
    The door obviously contributes somewhat but its mostly the wall.


  • Registered Users, Registered Users 2 Posts: 1,444 ✭✭✭sky6


    You can get Rockwool Soundproofing material in 4x2 by 50mm thick. but that would mean losing about 60mm of the width of room or twice that if you have two Walls.
    I did a few jobs with it a few years back and all were a great success. One was a lounge where they had live music on one side of the Wall and a quiet lounge on the other. You could only hear the music when someone left a Door open.

    You might also consider pulling the Block Wall down assuming it's not a supporting Wall and Stud it out and do as Antiskeptic has suggested.


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  • Registered Users, Registered Users 2 Posts: 153 ✭✭imp1


    Rockwool is not a 'sound proofing' material, and is instead a 'sound absorber'. Very different.


  • Registered Users, Registered Users 2 Posts: 7,598 ✭✭✭the_pen_turner


    is it the sounds from the flush and filling that you hear or is it the user that you hear.


  • Registered Users, Registered Users 2 Posts: 1,444 ✭✭✭sky6


    imp1 wrote: »
    Rockwool is not a 'sound proofing' material, and is instead a 'sound absorber'. Very different.

    I can't comment on the Technica difference, But Rockwool is what was supplied by the Company for the purpose intended and was extremely effective.

    Perhaps you could explain the difference so we can all be a little wise. Tks.


  • Registered Users, Registered Users 2 Posts: 633 ✭✭✭Idioteque


    Noise reduction can be one of those very tricky things to deal with as there's so many variables at play - two key ones being 'flanking sound' and 'subjectivity'. No doubt you hear sound beside the wall and there are a few options for dealing with it but you could just as easily be hearing flanking sound.

    It's a case of how far do you want to go to subjectively reduce what is annoying you. There's tons of good resources on the web if you wanted to educate yourself further but simply put you'll need a combination of different density materials for a start. Battens, Acoustic insulation, sound PB, rubber mat, another PB, acoustic sealant around perimeter would have some positive impact but again there's so many factors to consider before taking that on.

    Oh and what Sky6 said about pulling a block wall down to build a stud wall is bananas. You could just batten the existing wall and put the insulation in between the studs before PB over.

    Usually the best improvement is given when you build a 2nd wall out from the first wall leaving a gap between the two walls but most people don't want this as it's too much of a space loss.

    How often is the guest room used?


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