Window replacement in old buildings - Which glazing?

Hello everyone,

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

The house is a 1984 built Weberhaus, which is built solidly in the lower part and with a timber frame construction in the upper part. The top floor ceiling is insulated with about 15/15 cm.

Unfortunately, I know almost nothing about the insulation conditions of the walls (so I have no U-value or anything similar). I am currently obtaining quotes for window replacement and am not sure whether to choose double or triple glazing. I have sufficiently informed myself about the possible consequences in old buildings (mold etc.).

Now my question is: Can I make my decision in favor of triple glazing despite the rather limited information about wall insulation? Does the year of construction and the building method possibly provide some information? Or are there rather bigger concerns in this respect? Would I possibly need to consult an expert again? If so, whom should I contact?

Thank you very much in advance
- cabaLLero

What does the expert say about it?

Ask the building authority for the file. The application includes the construction description. Then you can calculate it yourself. I would almost always take triple.

Always as good as possible. The price difference between triple and double is also not significant. However, it is better for the future regardless of the effect. Keyword resale.

The expert did not comment on the glazing, but I have now asked him again and am waiting for a response. I definitely tend towards triple glazing, but I am uncertain whether this could possibly lead to mold growth due to the wall insulation. I cannot assess how good the wall insulation is or whether I can rely on the year of construction or the construction method.

I definitely tend towards triple glazing as well, but I am unsure whether this might lead to mold growth because of the wall insulation.

Exactly. Why triple? It boosts the insulation under today's energy saving regulations, but is otherwise just more expensive, heavier ...