Slimline double glazing

slipthru

I live in a conservation area and I currently have secondary glazing which is a bit of a pain to use and am planning to have my wooden sash windows draft proof and overhauled, Is it worth getting slimline double glazing?

Will it reduce noise and feel warmer?

grumpy_codger

Well, the answer to your question is obviously yes.

More difficult question would be to what degree, but the answer would be some figures that are better to be found online along with some explanation of what they mean.

ComicGeek

If you currently have single glazed sash windows, with well fitting double glazed secondary glazing inside of that, then replacing everything with slimline double glazing sash windows won't reduce noise. Secondary glazing typically performs well in reducing noise due to the larger air gap between the frames and due to the (normally) different thickness in glass (which reduces resonating of certain frequencies) - both advantages you wouldn't get with a normal slimline double glazed unit.

But depends on whether you currently leave the secondary glazing open to open the sash window (and therefore not benefitting from the secondary glazing anyway), whether the current secondary glazing fits well, what spec the slimline double glazing is etc etc

FreeBear

You can get slimline sealed glazing down to just 14mm thick (or even 10mm), but the performance isn't as good as full width 28mm units. They also cost considerably more, and there are limited suppliers should you ever need to replace one. That said, they will perform much better than single glazed windows (possibly not as good as secondary DG).

Before you go down the route of slimline glazing, ask the local Conservation Officer if 28mm units would be acceptable. You may find that he/she will agree, especially if you can present a well considered case for using thicker units.

slipthru

https://forums.moneysavingexpert.com/discussion/comment/82136154#Comment_82136154

I've been told only the 14mm would fit, I assume its the frames that would be the issue, as the sashes would need to be new to fit the14mm double glazing anyway.

My current secondary glazing isn't amazing it's a sliding one and there are a few mm gapes around it so I did want to get rid of it and they are difficult to open. But having said that i had resigned myself to keeping them for the time being.

Richmc

Best to consult the local consultation officer, they will have had this kind of enquiry before and might be able to guide you towards acceptable companies and designs, although they won't make an outright supplier. recommendation, this will avoid any possibility of you getting something they might not approve of.

Chickereeeee

yes, slimline double glazing works. They are filled with krypton gas, as it has a higher atomic weight - twice that of argon - which reduces heat transmission and leakage, but is expensive.

We have replaced four bays of glazing with it, and it works well. Much warmer and quieter than single glazing. No condensation in the downstairs bays. There is some in our bedroom when used overnight, but that is mainly due to having internal shutters, which reduces air flow, I beleive. Also, the thin glazing we have appears to have metallic edges, rather than modern 'warm-edge.'

No measurements, but I would say thin is good, but not quite as good as our warm-edge standard dg in other windows.