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TWA 52 V K18

  • 20-04-2010 1:09pm
    #1
    mendel
    Closed Accounts Posts: 100 ✭✭


    Folks,

    Looking for opinions on the quality of these 2 products

    Kingspan TWA 52 (82.5mm) dry lining insulation boards and
    Kingspan K18 (82.5mm) dry lining insulation boards

    The K18 is quite a bit more expensive, (7.49 per sq m) is it worth it? or does the standard product suffice?

    Thanks for all replies


Comments

  • #2
    sydthebeat
    Subscribers Posts: 42,172 ✭✭✭✭sydthebeat


    mendel wrote: »

    1. is it worth it?

    2. or does the standard product suffice?

    1. No, both boards will have similar thermal performance once the inherent gas has dissipated...

    Its unlikely that the initial difference in theoretical performance would make any real difference anyway, if other factors such as thermal bridging and air tightness havent been factored to highest quality.


  • #3
    tedimc
    Registered Users, Registered Users 2 Posts: 623 ✭✭✭tedimc


    Sorry to drag up an old thread - but I have the same question and was wondering if things have changed?

    I'm working through the costs/u-values of different options before talking to my BER assessor and am surprised by how little difference (if any) between the likes of Kingspan K18 & TW56 wall insulation boards and their K3 & TF70 floor insulation boards, but there is significant cost savings. K3 is approx. twice the cost of TF70.

    I heard somewhere (may have been on boards) that one option is to use K3 on the walls and slab on top of that with ordinary plaster slabs. Looking at the numbers you don't appear to save anything (if at all) considering the extra work - but when comparing u-values, the K3 is nearly twice as good; i.e. I get as good a U-value with 50mm K3 (0.21) as I do with 102.5mm K18 (0.2). As well as the 40mm saving in space, there is also a 7 euro saving per meter. A sheet of plasterboard will cost around 10 euro for 2.88m

    Has anyone else noticed this and tried out the above approach?


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