Lamella roller blind or venetian blind for sun protection?

The living/dining room of our currently planned single-family house faces 100% south and has an approximately 3.7 meter high glass front (triple glazing).

My original way of thinking was: For burglary protection and as sun protection, roller shutters should be installed in front of the windows. Now I have been told that
a). conventional roller shutters are no longer feasible due to the height of the windows
b). the roller shutters do not provide protection against burglary
c). the roller shutter box in the masonry represents a weak point in thermal insulation

c). is clear enough, but what about a). and b).? Is that correct? What alternatives do I have? An externally mounted electric slatted blind, for example?

Hello,

The living/dining room of our single-family house currently being planned faces 100% south and has an approximately 3.7-meter-high glass front (triple glazing).

Also a little cathedral? One of our female clients wished for that as well (attachment) ;)

My original thinking was: For burglary protection and as sun protection, roller shutters should be installed in front of the windows. Now I was told that
a). conventional roller shutters are no longer feasible due to the window height
b). the roller shutters do not offer protection against burglary
c). the roller shutter boxes in the masonry represent a weak point in thermal insulation

c). is clear so far, but what about a). and b).? Is that correct? What alternatives do I have? For example, an externally mounted electric venetian blind?

Whether roller shutter boxes are a weak point is a matter of opinion; the Energy Saving Ordinance allows no such leeway. It is certain, however, that you will not be able to install a conventional roller shutter. In the attachment you will also find a picture of a flush-mounted external roller shutter; if you have enough space above the window element, an alternative. These external roller shutters are also available with visible rails, on the right and left sides of the guides; here it depends on the architecture of your building project. Both systems can be electrified.

By the way, you will not even be allowed to install normal plastic windows; the structural engineer will definitely forbid it. The "cathedral" is an aluminum-reinforced window element.

Again, the question about your architect, what alternatives does he offer you?

Rhineland regards