A lot will depend on the overall energy efficiency of the property/rooms, thermal bridging around window frames etc. E.g. not much point in triple versus double glazed if most of the energy loss is via the window surrounds?Is TG worth the extra money over DG? Is coming in about €700 more expensive
A lot will depend on the overall energy efficiency of the property/rooms, thermal bridging around window frames etc. E.g. not much point in triple versus double glazed if most of the energy loss is via the window surrounds?
Are you just replacing the glazed units or the full windows including the frames? What are the U-values of the double are triple glazed options and and how much more are they charging for the triple?I would assume that the company fitting the windows would only recommend/offer TG if the frames support it, as such.
Are you just replacing the glazed units or the full windows including the frames? What are the U-values of the double are triple glazed options and and how much more are they charging for the triple?
ClubMan's point about what the windows will be fitted into remains valid, are the walls well insulated with good air-tightness?
Salespeople will usually try to sell you the option that makes them most money, your considerations are secondary.
Beware, some TG windows are not as good as DG, so pay attention to the specs when deciding.Replacing glass and frame. Standard block walls. Might look to have the front of the house wrapped or insultation pumped in winter 2024.
I think the u-value on the TG was 0.8 and 1.1 on the DG.
Your last point is exactly why I thought to get some peoples opinions. Stuff online seems to be very inconsistent, i.e. some say it worth it and other say it isn't.
I'd very much agree with that, particularly if external insulation is being considered. Doing them at the same time means the windows can be placed within the insulated envelope. Doing the windows now and insulation later will result in cold bridging.Might be best if window replacement coincided with installation of external insulation, if that's the route you follow ultimately. Better chance of airtight seal if windows and insulation done simultaneously.
I'd very much agree with that, particularly if external insulation is being considered. Doing them at the same time means the windows can be placed within the insulated envelope. Doing the windows now and insulation later will result in cold bridging.
Might be best if window replacement coincided with installation of external insulation, if that's the route you follow ultimately. Better chance of airtight seal if windows and insulation done simultaneously.
If not doing them at the same time, then external insulation first would be better.Not sure we could afford to do both at the same time. Is it really that important to do them at the same time?
Was hoping the windows upgrade would improve things this winter and potentially external insulation the following winter.
If not doing them at the same time, then external insulation first would be better.
I've never heard of an external insulation installer moving windows forward to form part of the external envelope, and so they will be set back in the existing walls and cold bridging will mean the overall result is less effective.
Our budget is €6K, €6.5 at a push so not sure external insulation is in budget at the minute. However might research somemore about doing it post new windows.
Is a u-value of 1.1 good for TG? Some companies are advertising 0.8 however not sure if that is in general or just specific circumstances, window sizes etc.
Sorry to jump in here but about to install triple myself and found a small company with good rep but who say the u value for their triple is around 1. I’m looking for 0.8 but they say they don’t see how some other companies are advertising 0.8 upvc triple glazed - in their view you’d need Aluclad frames to reach 0.7/0.8 - they suggest there is some trickery involved - any thoughts on that? DK windows and some others say they can do 0.8u value in upvc. ThanksBeware, some TG windows are not as good as DG, so pay attention to the specs when deciding.
If the 0.8W/m2k figure is the u-value for the whole window (frame & glazing) then this would be considered quite good for TG units.
It never ceases to amaze me the amount of pure bs is used by sales people. I wonder who is using some trickery to flog windows in this instance!Sorry to jump in here but about to install triple myself and found a small company with good rep but who say the u value for their triple is around 1. I’m looking for 0.8 but they say they don’t see how some other companies are advertising 0.8 upvc triple glazed - in their view you’d need Aluclad frames to reach 0.7/0.8 - they suggest there is some trickery involved - any thoughts on that? DK windows and some others say they can do 0.8u value in upvc. Thanks
It never ceases to amaze me the amount of pure bs is used by sales people. I wonder who is using some trickery to flog windows in this instance!
That comment about aluclad is bull, I suggest.
The devil is in the detail here so look for and interrogate the certification paperwork on the windows. My advice is if certification detail is not easily forthcoming then keep looking.
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