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INSULATED BOARD U VALUES

  • 07-08-2008 9:18pm
    #1
    DA-LAD
    Closed Accounts Posts: 53 ✭✭


    Does anyone have the u values for the different manufactures of insulated boards. Namely Kingspan TW52, XTRATHERM , QUINN, Ballytherm
    I am looking to buy the 38mm boards ( 25 mm Insulation + 12.5 slab)
    Strangly they all seem to have very similar prices.........
    Ive looked at thier IAB certs but its not very clear....
    Thanks,
    Da Lad


Comments

  • #2
    ircoha
    Closed Accounts Posts: 2,290 ✭✭✭ircoha


    can u post the links to the certs and we will have a look.


  • #3
    DA-LAD
    Closed Accounts Posts: 53 ✭✭DA-LAD


    XTRATHERM CERT NO 03/0197

    KINGSPAN TW52 CERT NO 03/0196

    QUINN QL CERT NO 05/0223

    BALLYTHERM BTDL CERT NO 05/0220

    If you type cert numbers into this link it gives you certificate
    http://www.nsai.ie/index.cfm/area/page/information/CertificateSearch

    thanks for your help,

    Da Lad


  • #4
    Mellor
    Registered Users, Registered Users 2 Posts: 39,671 ✭✭✭✭Mellor


    U-values are related to thickness.
    Kingspan have the U-values for a range of thickness of every board type on their website.
    Its in their catalogue. Bare in mind this is for the board only, bridging this board will reuce it and other build up, walls, plaster will have an effect to improve it


  • #5
    sinnerboy
    Closed Accounts Posts: 5,433 ✭✭✭sinnerboy


    DA-LAD wrote: »
    Does anyone have the u values for the different manufactures of insulated boards. Namely Kingspan TW52, XTRATHERM , QUINN, Ballytherm
    I am looking to buy the 38mm boards ( 25 mm Insulation + 12.5 slab)
    Strangly they all seem to have very similar prices.........
    Ive looked at thier IAB certs but its not very clear....
    Thanks,
    Da Lad

    they all produce essentially the same product ( PIR ) and achieve the same mm for mm performance

    to confirm this look for the Lambda value ( symbol is upside down Y ) , AKA the thermal conductivity value - all will be the same ( 0.023 w/m/k)

    .


  • #6
    DA-LAD
    Closed Accounts Posts: 53 ✭✭DA-LAD


    Sinnerboy,
    I see thay have the same lambda value of .22 -.23w/m/k But they hav a different thermal resistance for example Kingspan 25mm has thermal resistance of 1.136m2/k/w whereas the Ballytherm product is 0.962 m2/k/w.
    Is the smaller figure the better or what.....
    Thanks,
    Da lad.


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  • #7
    sinnerboy
    Closed Accounts Posts: 5,433 ✭✭✭sinnerboy


    conductivity is a constant factor

    resistance relates to thickness

    one of them must be quoting a resistance of insulation + plasterboard
    the other is quoting a resistance of insulation alone

    the higher the numerical resistance value - the better
    ( the lower the numerical u value - the better )

    all the products will perform the same


  • #8
    DA-LAD
    Closed Accounts Posts: 53 ✭✭DA-LAD


    Thanks sinnerboy. How'd ya get on with geothermal?


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