ᐅ Window Replacement in Older Homes – Which Glazing Option?

Created on: 14 Feb 2020 21:16
C
cabaLLero_
Hello everyone,

I recently bought a house, and an inspector advised me to replace the heating system as well as all the windows.

The house was built in 1984 and is a Weber house, with a solid construction on the lower floor and a timber frame construction on the upper floor. The ceiling of the top floor is insulated with about 15 cm by 15 cm (6 inches by 6 inches) of insulation.

Unfortunately, I know very little about the wall insulation (so I don’t have a U-value or similar data). I am currently getting quotes for window replacement and am unsure whether to choose double glazing or triple glazing. I have informed myself adequately about potential issues in older buildings (such as mold).

My question is: Can I decide in favor of triple glazing despite the limited information about the wall insulation? Does the year the house was built and its construction method provide any useful information? Or are there bigger concerns in this respect? Should I possibly consult an expert again? If yes, who would be the right professional to contact?

Thank you in advance
- cabaLLero
N
nordanney
15 Feb 2020 11:20
cabaLLero_ schrieb:

Wall insulation could lead to mold growth.
Mold occurs with very well insulated (double-glazed) and excellently insulated (triple-glazed) windows. This is due to today’s airtight construction methods and incorrect ventilation practices.
If mold is the only concern, it’s better to keep the old, slightly drafty windows.
C
cabaLLero_
15 Feb 2020 12:03
Of course, it’s not just about the potential mold issues.

The old windows are now 36 years old and have wooden frames. The window replacement is primarily intended to save energy costs.

I have since received a response from the expert, who also recommends triple glazing.
J
Joedreck
15 Feb 2020 15:18
Mold is caused by poor ventilation and heating, not by high-quality windows. The windows are sealed, whether double- or triple-glazed. The difference lies in where the moisture condenses. So, ventilate properly and that’s it.