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Can you buy insulating beads?

  • 08-09-2013 03:03PM
    #1
    john_cappa
    Registered Users, Registered Users 2 Posts: 1,371 ✭✭✭


    I have put up several steel box iron (100mm) beams to support a roof structure. These will be flashed etc and windows will be butted to them.

    Given that they are open and empty can I buy a bag of beads anywhere to fill them from the top with insulation before the lintel goes on top of them? the cavity will be getting pumped at a later date but dont really want to drill into theses given that they are 5 mm thick.

    Alternatively I have some xtra floor insulation off cuts left over that i could break up and push and pack tightly down from the top?

    Any ideas or thoughts welcome.


Comments

  • #2
    fclauson
    Registered Users, Registered Users 2 Posts: 1,691 ✭✭✭fclauson


    what are you trying to achieve ?

    a square piece of steel regardless of the insulation will still have 2 x 5mm running at 90 degrees to you insulation line

    You need to look at how you are going to wrap these such that they do not create a cold bridge.

    Alternately you should look at having your steel bracing thermally broken


  • #3
    john_cappa
    Registered Users, Registered Users 2 Posts: 1,371 ✭✭✭john_cappa


    fclauson wrote: »
    Alternately you should look at having your steel bracing thermally broken

    I think this is impossible at this stage so looking to minimise heat loss.


  • #4
    BryanF
    Moderators, Home & Garden Moderators Posts: 10,147 Mod ✭✭✭✭BryanF


    john_cappa wrote: »
    I think this is impossible at this stage so looking to minimise heat loss.
    show us a drawing on plan? is it not possible to place some insulation outside the box sections?


  • #5
    john_cappa
    Registered Users, Registered Users 2 Posts: 1,371 ✭✭✭john_cappa


    BryanF wrote: »
    show us a drawing on plan? is it not possible to place some insulation outside the box sections?

    Is it? I assumed it would not be?

    See below. 100 mm box located at each of the red dots.



    29b0zrl.jpg


  • #6
    BryanF
    Moderators, Home & Garden Moderators Posts: 10,147 Mod ✭✭✭✭BryanF


    you could discuss the install of aerogel strips outside the steels prior to install of cover flashing.

    these are the types of details that your arch/ builder & glazier should be working through at shop-drawing stage. ( i know its easier said than done, and many clients have not paid for this service, but often the u-value your window company intimate, stops at their frame)

    filling a steel box with beads will do little for your thermal bridging concerns


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  • #7
    BryanF
    Moderators, Home & Garden Moderators Posts: 10,147 Mod ✭✭✭✭BryanF


    john_cappa wrote: »
    Is it? I assumed it would not be?

    See below. 100 mm box located at each of the red dots.



    29b0zrl.jpg
    john, are you accessing your sitting/ kitchen/dining from a bedroom? or is this for the granny? will your granny's guests be walking through the bedroom to use the loo?


  • #8
    john_cappa
    Registered Users, Registered Users 2 Posts: 1,371 ✭✭✭john_cappa


    BryanF wrote: »
    john, are you accessing your sitting/ kitchen/dining from a bedroom? or is this for the granny? will your granny's guests be walking through the bedroom to use the loo?


    It is for a granny yes. There is an ensuite in the bedroom and there is access from the garden room to the sitting room also.


  • #9
    john_cappa
    Registered Users, Registered Users 2 Posts: 1,371 ✭✭✭john_cappa


    BryanF wrote: »
    you could discuss the install of aerogel strips outside the steels prior to install of cover flashing.

    Can you link to product information etc so I may educate myself a little?
    BryanF wrote: »
    these are the types of details that your arch/ builder & glazier should be working through at shop-drawing stage.

    Aint that the truth lol
    BryanF wrote: »

    filling a steel box with beads will do little for your thermal bridging concerns

    I understand it wont but it will at least help insulating the gap?


  • #10
    BryanF
    Moderators, Home & Garden Moderators Posts: 10,147 Mod ✭✭✭✭BryanF


    john_cappa wrote: »
    it will at least help insulating the gap?
    yes generally id foam fill such an item BUT there's no point if your not insulating the steel from the external elements


  • #11
    john_cappa
    Registered Users, Registered Users 2 Posts: 1,371 ✭✭✭john_cappa


    Bump for answer to OP!


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  • #12
    fclauson
    Registered Users, Registered Users 2 Posts: 1,691 ✭✭✭fclauson


    call any local firm who do bead pumping - I am sure they will let you have what you need for a few €€ - its not very much - you can work out the volume and that will make negotiations easier


  • #13
    john_cappa
    Registered Users, Registered Users 2 Posts: 1,371 ✭✭✭john_cappa


    fclauson wrote: »
    call any local firm who do bead pumping - I am sure they will let you have what you need for a few €€ - its not very much - you can work out the volume and that will make negotiations easier

    Volume is tiny lol less than 0.1m3.

    Will try that.


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