New windows: double or triple glazing for buildings constructed in 1995

Our main concern with the question is whether "too tight windows" could possibly lead to thermal bridges and mold formation, for example if the windows are tighter than the masonry. Furthermore, I have heard from acquaintances that the windows fog up very quickly and form moisture compared to the more permeable double-glazed windows.

Your current windows are almost on the energy level of the new double-glazed ones. Not much has changed since 1995, only the frames, spacers, and seals have been improved. So replacing them with new double-glazed windows doesn’t bring much benefit. Most of this has already been written by . - In any case, I would recommend triple glazing with warm edge (spacers between the panes no longer made of stainless steel but of PU / EPDM) and 6-chamber seals (construction depth usually 78mm+).

Triple-glazed panes do tend to fog up - from the outside. In damp weather and without a significant roof overhang and especially towards the garden (if it’s not a nice gravel garden), it can happen that they are fogged up in the morning.

You can read my answer at the following link:

The expert on Youtube made a great video about the questions regarding windows as the coldest point. Search there for "Schimmel im Haus durch neue Fenster" or if you want to see the problem directly, skip to minutes 10:21 and 14:57. This happens in most houses and is fatal. Whether this applies to you as well needs to be checked, but the risk that the cold point of the window can shift into the walls should be known.

My carpenter said that he often retrofits double glazing in older houses. But of course, this always needs to be considered individually. I would get several quotes.