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Lamda (U-value) how it changes over time

  • 07-07-2011 5:36am
    #1
    fclauson
    Registered Users, Registered Users 2 Posts: 1,691 ✭✭✭


    Thought you all might be interested in this

    http://www.bbacerts.co.uk/pdf/040-Lambda%209090.pdf

    Talks about Lamda (U-value) at manufacture and how it changes over time.

    It also talks about what the BBA use as its lamda values in calculations

    And from the manufacturing industry
    http://www.timsa.org.uk/Tgn05.PDF

    So when doing caculations you should use the lamda 90/90 figure


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