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Insulation Question

  • 30-01-2022 10:33PM
    #1
    kincaid
    Registered Users, Registered Users 2 Posts: 1,485 ✭✭✭


    Is that aluminium or bubble foil 3mm stuff be any good for used on a partition wall.?

    Can it be used on an existed front wall and then plaster board on top



Comments

  • #2
    Lumen
    Registered Users, Registered Users 2 Posts: 30,512 ✭✭✭✭Lumen


    No.



  • #3
    10-10-20
    Registered Users, Registered Users 2, Paid Member Posts: 9,734 ✭✭✭10-10-20


    Insulated plasterboard (IWI) is probably best for that application - they have an integrated vapour barrier and come in a variety of insulation depths. Others would prefer external wall insulation (EWI) - but it all depends on the requirement at hand.



  • #4
    kincaid
    Registered Users, Registered Users 2 Posts: 1,485 ✭✭✭kincaid


    i heard you can use the bubble foil if you use battens so you leave an air space



  • #5
    Lumen
    Registered Users, Registered Users 2 Posts: 30,512 ✭✭✭✭Lumen


    https://www.boards.ie/discussion/comment/118567449#Comment_118567449

    It doesn't matter what's it's made of, 3mm of insulation is useless.

    The only way it might make any difference is as an air barrier, but there are specific products for that.



  • #6
    10-10-20
    Registered Users, Registered Users 2, Paid Member Posts: 9,734 ✭✭✭10-10-20


    If your sole purpose is to reflect radiated energy in an air-gap, then yes, this will reflect radiated (IR) energy.

    It comes across as being effective as it will reflect body-heat if you put it to your face, but it has limited function in a structural environment as the vast majority of thermal energy is convected and therefore will not be repelled by these products.

    Layer out with wool/PIR instead.



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  • #7
    kincaid
    Registered Users, Registered Users 2 Posts: 1,485 ✭✭✭kincaid


    I see alot using this aluminium bubble foil rolls in camper vans



  • #8
    10-10-20
    Registered Users, Registered Users 2, Paid Member Posts: 9,734 ✭✭✭10-10-20


    Yes, you do. It looks space-age (ie 1960's) so looks great on camera, but it's misguided at best.

    https://www.vanlifeadventure.com/campervan-conversion/campervan-insulation/

    In Ireland you predominately need insulation to keep the heat in while in Texas for example - you want to keep the heat out. You do this by reflecting it.



  • #9
    listermint
    Registered Users, Registered Users 2, Paid Member Posts: 34,306 ✭✭✭✭listermint


    https://www.boards.ie/discussion/comment/118583526#Comment_118583526

    The first response in this thread was entirely accurate.



  • #10
    GreeBo
    Registered Users, Registered Users 2 Posts: 27,518 ✭✭✭✭GreeBo


    https://www.boards.ie/discussion/comment/118558684#Comment_118558684

    I would now always keep the insulation and the boarding separate, much easier to get better air tightness as you can tape the joints before boarding, but even then I would probably use a dedicated barrier anyway.



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