Experience of vacuum double glazing windows?
Discussion
I've just bought a grade 2 listed property and looking at options for replacement windows.
It has 600mm thick stone walls and because of the listing we can't do much to improve the insulation of the walls, which leaves the ceiling and windows as potential areas of improvement.
The new window frames have to be wooden and the glass has to be "heritage double glazing" that uses a 4mm or 6mm cavity.
I've just read up on vacuum insulated glass that's thin enough to satisfy listed building consent while outperform conventional double glazing in terms of its thermal properties and especially it's acoustic properties.
It's a relatively new product, I wondered if anyone has experience of it and their thoughts?
https://www.fineoglass.eu/
I haven't been brave enough to get a quote for new windows yet. There are sixty windows.
It has 600mm thick stone walls and because of the listing we can't do much to improve the insulation of the walls, which leaves the ceiling and windows as potential areas of improvement.
The new window frames have to be wooden and the glass has to be "heritage double glazing" that uses a 4mm or 6mm cavity.
I've just read up on vacuum insulated glass that's thin enough to satisfy listed building consent while outperform conventional double glazing in terms of its thermal properties and especially it's acoustic properties.
It's a relatively new product, I wondered if anyone has experience of it and their thoughts?
https://www.fineoglass.eu/
I haven't been brave enough to get a quote for new windows yet. There are sixty windows.
Do your research on that product.
It will only be any good as long as the vacuum remains intact.
I'm surprised they can have vacuum over such a large area without the glass simply bending inwards so the panes touch each other. It does say the gap is only 0.1mm which seems tiny which makes the external pressure even worse!!
It will only be any good as long as the vacuum remains intact.
I'm surprised they can have vacuum over such a large area without the glass simply bending inwards so the panes touch each other. It does say the gap is only 0.1mm which seems tiny which makes the external pressure even worse!!
peterperkins said:
Do your research on that product.
It will only be any good as long as the vacuum remains intact.
I'm surprised they can have vacuum over such a large area without the glass simply bending inwards so the panes touch each other. It does say the gap is only 0.1mm which seems tiny which makes the external pressure even worse!!
I haven't re-looked but read about Fineo before and I think it's effectively like laminated glass - so you end up with triple panes. There are a few vacuum systems around.It will only be any good as long as the vacuum remains intact.
I'm surprised they can have vacuum over such a large area without the glass simply bending inwards so the panes touch each other. It does say the gap is only 0.1mm which seems tiny which makes the external pressure even worse!!
I don’t have the direct experience of using fineo but when we moved to G2 listed house about 2 years ago, it came up a lot in recommendations. If you look on most sash window repair/refurbishment businesses, it highly likely what they offer. If I recall, one of the top attraction is that it very thin and so does allow using historical window
TooLateForAName said:
There used to be a system that had tiny stents propping the sheets of glass apart - you could see a very faint pattern
That’s it. There are tiny glass pillars in a grid pattern between the two panes keeping the them apart. If you get up close you can just make them out.Typically double / triple glazing can have 90% argon in between to reduce the U-value compared to air filled by around 0.2 for all widths of cavity.
With cavities below 15mm other gasses, such as Krypton or Xenon, can allow the cavity to be reduced to as little as 6-7mm and retain a good U-value.
With cavities below 15mm other gasses, such as Krypton or Xenon, can allow the cavity to be reduced to as little as 6-7mm and retain a good U-value.
dobly said:
No personal experience, but a quick search uncovered Gowercroft Joinery - Heritage range uses Pilkington Spacia vacuum double glazing.
I seem to remember this was on a Grand Design House of the Year listed conversion nominee a couple of years back.
Nothing to add but I think I drive past the owners house on my way to work every day. He's got a healthy selection of cars, great taste as well. I seem to remember this was on a Grand Design House of the Year listed conversion nominee a couple of years back.
TheInternet said:
If it's like the stuff I've seen I think you ought to get a sample and see how you feel about the dots all over it. They could be anything from an non issue to a massive irritation depending on the setting and your disposition. Consider it in different lighting scenarios too.
Good shout. I had a close look at it at a Home Renovation Show and could hardly see the pillars but that was under indoor lighting. I might get a sample pane of it and rest it up against the windows in the new house for an extended test drive. Low sunlight might refract off the glass pillars and be far more noticeable than the pillars themselves in soft indoor light.cliffords said:
I thought all double glazing was vacuum. When they fail you get misting inside .
typically filled with argon or other inert gas. One of the key points is that there is no moisture inside - dry gas and dessicant beads in the spacers. When the seals fail then the argon gets out, ambient air including moisture gets in. the misting happens when the dessicant gets overwhelmed.Strict new regs for windows on the horizon that will probably require triple glazing or vacuum glazing such as Fineo. Vacuum can apparently out performs triple glazing, but is extremely expensive. It is similar to laminated but instead of a plastic membrane between the glass sheets it has a 0.1mm vacuum, clever stuff.
Edited by Little Lofty on Wednesday 24th January 00:20
Little Lofty said:
Strict new regs for windows on the horizon that will probably require triple glazing or vacuum glazing such as Fineo. Vacuum can apparently out performs triple glazing, but is extremely expensive. It is similar to laminated but instead of a plastic membrane between the glass sheets it has a 0.1mm vacuum, clever stuff.
In hindsight I probably should have had an idea what timber heritage double glazed or vacume glazed windows cost since the house has sixty windows. Edited by Little Lofty on Wednesday 24th January 00:20
Gassing Station | Homes, Gardens and DIY | Top of Page | What's New | My Stuff