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Boarded insulation v beaded

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  • 30-04-2021 12:59pm
    #1
    C__MC
    Registered Users Posts: 3,041 ✭✭✭


    Which is best for a new build and cheapest?
    Thank you


Comments

  • Options
    #2
    sydthebeat
    Subscribers Posts: 40,989 ✭✭✭✭sydthebeat


    C__MC wrote: »
    Which is best for a new build and cheapest?
    Thank you

    lots of types of board insulation.. but generally the following are comparable to achieve say, a 0.14 u value wall:

    150 xtratherm full fill board in a 150mm cavity
    120 Kingspan K108 board with 30mm residual cavity
    200mm platinum bead in a 200mm cavity

    each has their pros and cons.. so "best" is very subjective

    cheapest on that list is probably the beads


  • Options
    #3
    C__MC
    Registered Users Posts: 3,041 ✭✭✭C__MC


    sydthebeat wrote: »
    lots of types of board insulation.. but generally the following are comparable to achieve say, a 0.14 u value wall:

    150 xtratherm full fill board in a 150mm cavity
    120 Kingspan K108 board with 30mm residual cavity
    200mm platinum bead in a 200mm cavity

    each has their pros and cons.. so "best" is very subjective

    cheapest on that list is probably the beads

    Thanks
    Boards probably the best is it


  • Options
    #4
    Dudda
    Registered Users Posts: 1,541 ✭✭✭Dudda


    C__MC wrote: »
    Thanks
    Boards probably the best is it
    The above examples all give the same result so are equal.
    The boards have to be fitted perfectly which they often aren't and you've no easy way of knowing or seeing if they're installed correctly without any gaps. If they've gaps the heat gets lost and a lot of the money you spent on insulation is wasted. With beads you don't (or shouldn't) have gaps or this issue.


  • Options
    #5
    Biker1
    Registered Users Posts: 369 ✭✭Biker1


    Dudda wrote: »
    The above examples all give the same result so are equal.
    The boards have to be fitted perfectly which they often aren't and you've no easy way of knowing or seeing if they're installed correctly without any gaps. If they've gaps the heat gets lost and a lot of the money you spent on insulation is wasted. With beads you don't (or shouldn't) have gaps or this issue.

    You also need to consider is the correct glue to bead ratio used as sometimes this is not the case. In an ideal world if either method is done as it is supposed to be then the results will be the same.


  • Options
    #6
    MicktheMan
    Registered Users Posts: 2,823 ✭✭✭MicktheMan


    C__MC wrote: »
    Which is best for a new build and cheapest?
    Thank you

    Beads installation is very difficult to mess up and can be rectified relatively easily.
    Rigid boards, on the other hand, are frequently done badly and cannot be easily sorted (or at all). So beads get my vote (but check exposure to driving rain).


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