Triple glazing, worthwhile?

Windows are aging, some are blown, so I was thinking if we're replacing, might be worth just doing the whole lot. Now I'm wondering if doing it window by window may be better, but I suspect that given you end up paying for a full days work, even if it's just half a days job, more might be better regardless...
That would be a really expensive way to do it and you run the small risk of not getting matching frame styles / sizing. I did one house, back and then front windows but that was only due to other renovation work and trying to live in the house, but even that still cost a fair bit more than I was quoted for all at once.
 
Two additional benefits - reduces heat coming in from the outside. We focus a lot on heat loss, but with warmer summers it's good to also reduce the transfer of heat into the home. Security - an extra pane of glass gives the window extra strength (at a cost of weight though).
 
Windows are aging, some are blown, so I was thinking if we're replacing, might be worth just doing the whole lot. Now I'm wondering if doing it window by window may be better, but I suspect that given you end up paying for a full days work, even if it's just half a days job, more might be better regardless...

Mostly doing it to try and improve insulation.
Your biggest cost is the fitter. To the extent that just replacing glass into old frames really isn't worth it. So deffo get as many done as you can fit into a day.
 
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That would be a really expensive way to do it and you run the small risk of not getting matching frame styles / sizing. I did one house, back and then front windows but that was only due to other renovation work and trying to live in the house, but even that still cost a fair bit more than I was quoted for all at once.
Your biggest cost is the fitter. To the extent that just replacing glass into old frames really isn't worth it. So deffo get as many done as you can fit into a day.

This is my thinking. I'll get it costed up I guess and see just where the total cost lies, and work out whereabouts it then needs to sit in priority!

Two additional benefits - reduces heat coming in from the outside. We focus a lot on heat loss, but with warmer summers it's good to also reduce the transfer of heat into the home. Security - an extra pane of glass gives the window extra strength (at a cost of weight though).

We've actually got an AC unit in place from the previous owners, so with the solar in place, cooling is less of a concern! But definitely another reasonable consideration.
 
Most glass firms are still pretty old school. Ring them up, make a relationship, ask them to come and advise. I paid 2k 2xlarge bedrooms, 1xhall, 1x kitchen. They were out the door by 1700 so another 1 window would have seen it grow to like 2.6k.
 
i doubt much heat is lost through double glazing, i built a bungalow about 9 years back with modern insulation and double glazing and the heat retention is insanely good. Its the modern insulation that made a colossal difference VS my old house.
Double glazing has a u value of c. 1.2 compared to just 0.3 for walls for a home built in the last 15 years, so there is a lot of heat lost through the windows relative to your walls/roof, and the further you go back the gap generally gets bigger! windows only needed to get a u value of 4.8 in 1994...
 
Question on U's is how do you find out what you have now - ~10 year glass I have doesn't say
Folks had most of their 25yr upvc frames & double glazing w/patio replaced last year but still only double glazed (one had blown & wanted some more secure small opening windows on gnd floor)

[
not sure why they blow, too, after a deep clean last month wondered about poor cleaning of debris at the edges that might suffer freeze thaw
- not sure pole system window cleaner uses is so good, may just scrape some dirt down there.
]
 
We got triple glazing installed couple of years ago. The double glazed windows were in the house since build around 35 years earlier. They were thin glass and thin airgap, and so to fit the triple glazing required a lot of digging around each window hole to accommodate the much thicker frame, think it was nearly twice as thick. Thankfully the company did it by digging out the outside of the window, so we had next to nothing damage on the inside of the house. As I recall the difference in going to triple glaze to new double glaze was not a lot of money.

One thing I have noticed is that we get condensation on the OUTSIDE of the widows on certain chilly and then sunny mornings. Apparently this is a good sign, as it means the outside glass is not getting any heat transfer from the inside, and as the morning warms up the water condenses on the cold surface of the pane.
 
One thing I have noticed is that we get condensation on the OUTSIDE of the widows on certain chilly and then sunny mornings. Apparently this is a good sign, as it means the outside glass is not getting any heat transfer from the inside, and as the morning warms up the water condenses on the cold surface of the pane.

That's correct. I had the same concern so looked it up. As you say, there is not enough heat transfer from inside the house to evaporate the condensation on the outside of the window so actually shows your windows are performing well.
 
That's correct. I had the same concern so looked it up. As you say, there is not enough heat transfer from inside the house to evaporate the condensation on the outside of the window so actually shows your windows are performing well.
That's interesting - is that like some mornings my car is covered in condensation? Or is some other mechanism at play there?

North facing driveway if it's relevant.
 
We went triple glazed, for noise reduction, but I don't really think it made any difference, in any room. Even with trickle vents shut!
Maybe I'm wrong, maybe I expected too much.

Do get then condensation on the outside, so the panel is performing correctly, guess that's one good thing lol.
 
That's interesting - is that like some mornings my car is covered in condensation? Or is some other mechanism at play there?

North facing driveway if it's relevant.

It can be a couple of reasons but, essentially, its to do with the dew point of the air. Dew point being the temperature at which moisture in the air now reverts back to water.

Air around you contains moisture. The warmer the air is, the more moisture it can hold. As glass tends to be cooler than the surrounding air, when it reaches the dew point, this is where the moisture first gets dumped resulting in actual water forming.

This is also why tiles in your bathroom get condensation on them from a hot shower - the hot water heats up the air which then holds some of the water. It then moves to the cold tiles forcing it to dump the moisture into water as the colder temp cant hold the same water any more.
 
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