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question about tripled glazed upvc units

  • 06-04-2009 11:16am
    #1
    gooner99
    Registered Users, Registered Users 2 Posts: 2,051 ✭✭✭


    I visited my friends house which has just had triple glazed upvc windows installed.They were supplied by a well know southern based manufacturer/supplier of windows nationwide.Does anyone have experience of these triple glazed upvc windows?

    The glazing was triple glazed with stickers stating argon gold filled on them with black spacer bars.The frames looked pretty standard upvc frames to me.As I couldn't see the makup of the frame,I couldn't be sure if they have been super insulated to improve the u value.

    Am I right in saying that if the frames are not of a very good u-value then the benifit of the triple glazing will be somewhat lost.But how much is the question.Is installing triple glazed units into standard upvc windows a waste of time (would you be better sticking with double glazed).

    I would be very interested in your opinions on the relationship between the u-value of the glazing and the u-value of the frame,as I will be going down this road myself shortly.What is the best balance to strike?

    Thanks


Comments

  • #2
    BoozyBabe
    Registered Users, Registered Users 2 Posts: 1,724 ✭✭✭BoozyBabe


    Great question Gooner, as we'll also be wrecking our brains about this question soon also


  • #3
    sydthebeat
    Subscribers Posts: 41,863 ✭✭✭✭sydthebeat


    gooner99 wrote: »
    I would be very interested in your opinions on the relationship between the u-value of the glazing and the u-value of the frame,as I will be going down this road myself shortly.What is the best balance to strike?

    neither, the whole window u vale is the pertinent value... ie the u (eff) value.... which means the effective u value.

    with triple glazing theres a balance between the heat they keep in versus teh solar gains they keep out. In my opinion, triple galzing in ireland should only be used on northern orientations.

    http://www.passivhaustagung.de/Passive_House_E/windows_passive_houses_06.html


  • #4
    Carlow52
    Closed Accounts Posts: 2,389 ✭✭✭Carlow52


    sydthebeat wrote: »
    .. In my opinion, triple galzing in ireland should only be used on northern orientations.

    Would agree unless the option of fitting venetian blinds in the window is availed off. very effective and no cleaning:)


  • #5
    sas
    Registered Users, Registered Users 2 Posts: 1,282 ✭✭✭sas


    The issue of only having triple glazing on the north was raised by alot of architects at the passive house conference in croke park in 2007.

    I'm told that the PHI speaker was very clear. Triple glazed windows on the south represent a net gain for the home when measured over the whole year.

    There is g factor (I think it's called) for triple glazed windows which refers to the amount heat that will be allowed in via the glazing. Passive house windows have to have a value above a certain level.


  • #6
    BoozyBabe
    Registered Users, Registered Users 2 Posts: 1,724 ✭✭✭BoozyBabe


    I'm sorry sas, but I've no idea what you're saying there. :(
    Are you agreeing with STB's comment or not?

    I only have a small office window, & an even smaller ensuite window on our north facing wall, so, going by STB's recommendation, there's no point in me going with triple glazed at all?
    All the better, as I don't want to be out unnecessary expense due to being ill informed.
    If triple glazed was only going to give me marginal heat savings (if any) for the extra cost involved in choosing them, I'd prefer not to install them


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  • #7
    sas
    Registered Users, Registered Users 2 Posts: 1,282 ✭✭✭sas


    BoozyBabe wrote: »
    I'm sorry sas, but I've no idea what you're saying there. :(
    Are you agreeing with STB's comment or not?

    I only have a small office window, & an even smaller ensuite window on our north facing wall, so, going by STB's recommendation, there's no point in me going with triple glazed at all?
    All the better, as I don't want to be out unnecessary expense due to being ill informed.
    If triple glazed was only going to give me marginal heat savings (if any) for the extra cost involved in choosing them, I'd prefer not to install them

    Respectfully disagreeing with him. Although we may not actually be coming at it from the same direction. I'm assuming extremely high levels of details i.e. a passive house. I don't know if the argument does hold up in a lesser spec home.

    I believe you need to consider the glazing in conjunction with your overall insulation specification. WIll the windows actually be the week point?

    Airtightness has the biggest return on investment I'm told.


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