ᐅ Double or triple glazing in new construction – triple glazing allegedly an unnecessary expense
Created on: 23 Sep 2022 09:54
S
Smeagol
Hello everyone,
The window salesperson/advisor recommended using double glazing with a U-value of 0.81 instead of triple glazing with a U-value of 0.6 for our new build at KFW60 standard.
The additional cost for the nearly 17 windows and patio doors totals around 3,000 EUR.
They explained that triple glazing reduces solar heat gain (which makes sense due to light refraction and so on), but still suggested that the extra expense might not be worth it. Online, I found a break-even point of about 10 years for the additional cost of triple glazing.
What’s your assessment?
Thanks!
The window salesperson/advisor recommended using double glazing with a U-value of 0.81 instead of triple glazing with a U-value of 0.6 for our new build at KFW60 standard.
The additional cost for the nearly 17 windows and patio doors totals around 3,000 EUR.
They explained that triple glazing reduces solar heat gain (which makes sense due to light refraction and so on), but still suggested that the extra expense might not be worth it. Online, I found a break-even point of about 10 years for the additional cost of triple glazing.
What’s your assessment?
Thanks!
Winniefred27 Sep 2022 16:39Yes, that may be true. However, the additional cost for triple glazing is usually not exorbitant, and regarding long-term value—who still uses double glazing nowadays? For that reason alone, I wouldn’t choose double glazing. As I mentioned, we also have double glazing with good quality roof windows; they definitely weren’t cheap, but you can clearly notice the difference compared to the triple-glazed windows from the same year.
Winniefred schrieb:
who still uses double glazing today? [...] but you can definitely notice the difference compared to triple glazing from the same year.There are many cases where double glazing makes sense, so it is worthwhile to keep it as an option. Not a large number of cases, but enough to avoid discontinuing it. You only notice the difference when comparing like with like—that is, when the triple glazing actually has one more pane (and air gap) than the double glazing. Otherwise, there can be qualities where double glazing performs on par with triple glazing.https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
A
Aga_Fischi29 Mar 2023 15:52Kati2022 schrieb:
I would also choose triple glazing. It seems to be standard nowadays... I think.
We ordered our windows from a friend who is a window supplier in Poland. They are aluminum windows from Aliplast (a Belgian manufacturer). For the Polish supplier, it was standard that all windows have triple glazing (Ug value 0.5!), warm edge spacers from Swissspacer. They are installed according to RAL standards on “warm window sills” using Illbruck compressible strips. All floor-to-ceiling windows additionally get a Purenit base instead of doubling the frame.
I thought if all of this is already considered standard in Poland as part of good craftsmanship, it has long been the case in Germany as well...Could you tell me the company you got the windows from? And are you satisfied with them? Many thanks and best regards, Agnes