Interior cleaning of roller shutters on fixed windows

Hello and thank you very much for your contributions!

As I have now researched, in the case of a fixed window, one could, if necessary, also remove the glass to clean the roller shutter from the inside once every 10 years, and then later reinstall it with silicone.
If no rain is pounding on the roller shutters and you keep the windows normally clean, not much dirt will accumulate behind them.
Casper, you are right... in my current house, the roller shutters on the south side are still in perfect condition.

The problematic thing is just the fixed window elements themselves from the upper floor upwards. That's what annoys her the most...

I'm a bit confused here: do you have elements there without any openable sashes at all?

In the stairwell, window surfaces over 1.5 floors above the ground floor [Vordach]

But you can, if you have removable roller shutter rails. Then you remove the rails and carefully lower the roller shutter. But this only works on the ground floor and only with two people.

Removable roller shutter rails - AHA! I will talk to my window representative about this right away!