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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

PLEASE NOTE: A download link for Volume 1 will be sent to you by email and Volume 2 will be sent to you by post as a book.
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Energy Assessment: U value of wooden window frame.

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    • CommentAuthorarnyj
    • CommentTimeSep 14th 2009
     
    I am trying to buy a new window for my bathroom The U value for the triple Glazed unit is 1.0
    Supply and fit £425

    The window is likely to be African Cedar the section of frame used is 80mm deep & 70mm thick (Stormproof window)

    I see from green building bible, material section.

    Thermal Conductivity's are.... Hardwood - 0.160 & Softwood - 0.120.

    How do you convert that into figures to make a calculation?

    I also got a quote for Aluminium window that was D/glazed unit only 1.1 argon, Combined 1.6,,,
    Which is suprizing given that Thermal Conductivity is 198.000

    Supply and fit £280 inc vat

    I look forward to any replies Arnold

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