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PassIV/PVC window u-value

  • 20-02-2013 8:39pm
    #1
    missanxious
    Registered Users, Registered Users 2 Posts: 26 ✭


    We are renovating our house and wondering about windows. We were hoping to get PassIV triple glazed as understood they were one of the best. However, when I check the website of the supplier it states the following after each type of window:

    PVC window: "Window U-value as low as 0.65W/m2K"
    PassIV window: "Centre pane U-value as low as 0.5W/m2K"

    I would have thought the PassIV window would have a lower u-value or am I missing something?


Comments

  • #2
    BryanF
    Moderators, Home & Garden Moderators Posts: 10,146 Mod ✭✭✭✭BryanF


    missanxious wrote: »
    the website of the supplier it states
    .....
    missing something?
    whats in a name


  • #3
    missanxious
    Registered Users, Registered Users 2 Posts: 26 ✭missanxious


    BryanF wrote: »
    whats in a name

    Munster Joinery, sorry.


  • #4
    sydthebeat
    Subscribers Posts: 42,172 ✭✭✭✭sydthebeat


    the website says the passiV window (HARDWOOD)
    U-values as low as 0.58W/m²K

    passiV window (UPVC)
    Window U-value as low as 0.65W/m2K

    two different materials, and it appears the hardwood is better.


    the 'centre pane' u value isnt something you can compare to a 'whole window' u value


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