ᐅ Roof windows with double or triple glazing

Created on: 17 May 2017 21:56
T
Tentakel
Hello everyone,

We are currently reviewing the offer from our carpenter and noticed that the roof windows were only quoted as double-glazed. When I ask around, it seems that everyone is only using double glazing?

So far, I have found out that triple-glazed windows generally don’t have condensation issues. However, in winter, the window also tends not to stay clear of snow.

From an energy perspective, I’m unsure whether it’s worth paying the 300 euros (about $320) extra per window, as otherwise, they might become the weakest part of the house. We only have two windows, so it’s a relatively small extra cost—but it does add up.

What type of glazing have you installed and why?

Thanks,
Andreas
C
Caspar2020
18 May 2017 10:39
merlin83 schrieb:
Our children sleep under skylights that have only double glazing. In hindsight, this was clearly the wrong place to cut costs. It’s similar with the toilet under the skylight.

There are different types of double-glazed windows. It might simply be that the seal isn’t properly airtight, or the window isn’t correctly adjusted.

That is, if you actually have drafts.

If it’s just the “cold” air forming on the window, using honeycomb blinds (pleated blinds, DuoLine) can help; for example, those made by Velux.
andimann18 May 2017 13:25
Hello,
triple-glazed windows probably won't be cost-effective. However, I can imagine they are quieter, meaning you don’t hear the sound of raindrops on them as much.

This is something that bothers many people quite a bit.

Best regards,

Andreas
Mycraft18 May 2017 13:38
hmm no, not really... as long as only a third pane of glass with the same thickness is added...
K
Knallkörper
18 May 2017 14:17
We have five Velux UK08 windows with triple glazing. These are the large ones, measuring 1.34 x 1.40 meters (4.4 x 4.6 feet). I don’t have a comparison with the standard double-glazed windows, but I can say that these windows are very quiet during rain. They also seem to be quite heavy. The support spring struggles quite a bit with the weight.

PS: If in doubt, I would prefer to install an exterior roller shutter rather than triple glazing. Sun protection is more important.
11ant18 May 2017 14:25
I’ll just drop the keyword "warm edge": adding an extra pane is not the only difference you can make in a window.

Three panes weigh more, and with roof windows this matters not only for the support, as it does with vertical windows, but also significantly for the user operating the window.
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
L
Lumpi_LE
18 May 2017 16:26
We have six of the UK08, but double-glazed.
Do you know how much they cost, or was it a fixed-price contract?