Set the window 1-2 cm inward so that the fly screen fits

The box of the roller shutter only has an inspection opening on the outside.

I want to install the windows together with a well-known carpenter and would like to discuss the possibilities beforehand.

It is also possible that I will order the windows from the GÜ, the price does not matter.

Best regards, Ralf

The roller shutter guides were plastered in. I wonder how you can later change the roller shutter or repair anything if they are plastered in.

Not at all (from the outside). This is a completely normal procedure in new construction (especially with ETICS). For this, there are inspection flaps on the inside. From the outside, everything is completely sealed with render strips – that is how it is supposed to be.

The houses are solidly built (36er T7 mineral wool) and the plaster inside is already finished and partly with textured plaster, it already looks finished, and maintenance from the inside is not possible because fully insulated roller shutter boxes were used.

The houses are solidly built (36cm T7 mineral wool) and the plaster inside is already finished and partially with textured plaster, it already looks finished, and maintenance from the inside is not possible because fully insulated roller shutter boxes were used.

Whether solid or not, it doesn't matter. Plastering over to create a neat finish is normal.
And the fully insulated roller shutter box is also common. Whether it can be opened from the outside or inside (and then also whether it opens forward or downward) makes no difference. Today's roller shutter boxes are ALL fully insulated. Inside, it is common to make them open downward so that the front can be flush with the wall and plastered.

Just post the photos from the inside.

This is a possible setup from the outside - as in your picture


And this is how it can look inside. This is an insulated roller shutter box with an inspection opening inside opening downward. You cannot see it from the front at all.:


P.S. A sensible answer to your initial question would have been: The installation of windows with roller shutters does not matter concerning the position. For that, you pay a few extra euros in new buildings and take windows with integrated insect protection. High-quality, durable, and without DIY hassle.