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40 mm or 44 mm triple glazing?

  • 10-02-2017 5:08am
    #1
    Southern Comfort
    Registered Users, Registered Users 2 Posts: 188 ✭✭


    My sister in law is due to start an extension shortly. She has the builder lined up etc. On my recommendation, she's having the windows and patio door supplied and installed directly by a window company.

    She's had two reps call to her. One company does 40 mm triple glazing and the other uses 44 mm. Both are good companies using Rehau and Camden frames.

    The prices difference isn't huge but she's anxious to have the best u value possible.

    Is there a big difference between the 40 mm units and the 44 mm units? (All argon filled).


Comments

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


    U-value, solar factor of each etc?


  • #3
    Southern Comfort
    Registered Users, Registered Users 2 Posts: 188 ✭✭Southern Comfort


    BryanF wrote: »
    U-value, solar factor of each etc?

    Don't know, Bryan. I was hoping someone might be able to indicate which might have a better u value potentially.

    Solar value not an issue as extension is north facing.


  • #4
    Gumbo
    Moderators, Society & Culture Moderators Posts: 40,339 Mod ✭✭✭✭Gumbo


    Southern Comfort wrote: »
    Don't know, Bryan. I was hoping someone might be able to indicate which might have a better u value potentially.

    Solar value not an issue as extension is north facing.

    I think what Bryan is getting at, is that the suppliers should be able to provide the info with regards u-value, solar factor and whether the windows are rated as a whole system rather than just the glass.

    Only then can someone tell you what is the better unit.


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