The difficulty with our new windows is how to find a fine balance between conformity with preservation orders and modern comforts, especially concerning the energy balance.
Remember: We are a monument :-) and therefore we have to consider quite a lot of regulatory requirements. The most important ones are:
1. Windows must be outward opening (which I love in general but which is a pest when you do your window-cleaning...)
2. Divided-light windows
3. Narrow profiles
After checking several offers, we decided to commission a carpentry from a nearby village to build our new windows. They use local wood and ecologically compatible paint, usually from Auro, which was an important factor in our decision-making. Especially as some of the new windows will be built in in the nursery - good to know no toxins will evaporate.
Here is a drawing of the windows we'll have built in, they are so-called "Kreuzstockfenster", is the English expression for it "crossbar window"?
The next steps (protected and listed building) have to be these:
a) submit a building application to the monuments administration
b) wait for their decision and especially the important STAMP of permission
c) after works will be finished: acceptance of construction work by the authorities
We've managed up to step b) and here it is, the stamp of permission: