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New windows and it's insulating ability

  • 13-10-2019 4:19pm
    #1
    allycavs
    Registered Users Posts: 271 ✭✭


    Hi I've a older house with no insulation. Exisiting windows are old Double glazed pvc. Rooms really heat up with sunny day in winter. They are to warm . And in a winter's night the rooms don't really keep their heat. So I'm wondering will I benefit from new aluclad windows?


Comments

  • #2
    BryanF
    Moderators, Home & Garden Moderators Posts: 10,140 Mod ✭✭✭✭BryanF


    Specifically alu clad? Or any window that helps retain the heat better than what you have?


  • #3
    ednwireland
    Registered Users Posts: 14,282 ✭✭✭✭ednwireland


    allycavs wrote: »
    Hi I've a older house with no insulation. Exisiting windows are old Double glazed pvc. Rooms really heat up with sunny day in winter. They are to warm . And in a winter's night the rooms don't really keep their heat. So I'm wondering will I benefit from new aluclad windows?


    make sure your current windows close and seal properly, seriously i had this issue with my windows got the number of aguy he went round changed seals and hinges on a few windows, made a huge difference.

    did get a new aluclad triple glazed patio door but only as the original one never sealed properly.

    when i was reading up the insulaton difference between old and new windows isnt that big (even if triple glazed) as long as the old units aren't blown and seal correctly.

    My weather

    https://www.ecowitt.net/home/share?authorize=96CT1F



  • #4
    allycavs
    Registered Users Posts: 271 ✭✭allycavs


    BryanF wrote: »
    Specifically alu clad? Or any window that helps retain the heat better than what you have?

    Any Windows that helps retain heat


  • #5
    allycavs
    Registered Users Posts: 271 ✭✭allycavs


    ednwireland wrote: »
    make sure your current windows close and seal properly, seriously i had this issue with my windows got the number of aguy he went round changed seals and hinges on a few windows, made a huge difference.

    did get an aluclad patio door but only as the original one never sealed properly.

    when i was reading up the insulaton difference between old and new windows isnt that big (even if triple glazed) as long as the old units aren't blown and the seal correctly.

    That's interesting between old and new windows. I was hoping there a be a big difference


  • #6
    ednwireland
    Registered Users Posts: 14,282 ✭✭✭✭ednwireland


    allycavs wrote: »
    That's interesting between old and new windows. I was hoping there a be a big difference

    first link i came across
    https://www.thegreenage.co.uk/replace-double-glazing/

    https://www.askaboutmoney.com/threads/double-glazing-v-triple-glazing.185785/

    My weather

    https://www.ecowitt.net/home/share?authorize=96CT1F



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  • #7
    MicktheMan
    Registered Users Posts: 2,823 ✭✭✭MicktheMan


    allycavs wrote: »
    So I'm wondering will I benefit from new aluclad windows?

    If the new window specs are better than what you already have, then of course you will "benefit".
    However, by how much and will you notice the "benefit" is entirely a different question which cannot be accurately answered here with the information at hand. For example, suppose your current windows are responsible for 75% of your heat loss in the room and the new windows halved this heat loss then you would absolutely notice the improvement. On the other hand, if your current windows represented only 10% of your heat loss then you probably wouldn't notice the improvement.


  • #8
    allycavs
    Registered Users Posts: 271 ✭✭allycavs


    Hi Mick the windows I am replacing would take up at least 60-70% of the external wall space. In one room it possibly even more as window is very large


  • #9
    Q&A
    Registered Users Posts: 552 ✭✭✭Q&A


    An airtightness/heat loss survey would probably give you the most comprehensive answer. Before I insulated my walls I thought it was the best way of assessing what measures should be prioritised - or more to the point would I just be throwing money away.

    Based on my experience - single brick walls on a 1950s house - wall insulation was the the main solution identified . Servicing the windows and improving floor insulation were mentioned as secondary factors but that they should only be tackled once the walls were done.

    Eight months after the insulation and according to my nest my heating had been on for about half as long as the same period last year. The walls are good but those numbers are skewed by how cold February and March were in 2018.


  • #10
    denismc
    Registered Users Posts: 1,394 ✭✭✭denismc


    Like the previous poster said, get an energy survey done, it will give you a good idea of where your heat is being lost.
    I had one done a few years ago and it showed that my heat loss was due to a lack of airtightness rather than poor insulation as I had assumed.


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