Reflective film on large windows on the south side - effective?

Would be afraid that birds would constantly fly into the window.

Ok, I can already tell that the mirror film is no good either.
There is probably no other choice but to retrofit an air conditioning system. The area is 45 sqm, which is manageable.

Retrofitting venetian blinds is not possible, there is a roller shutter box.
slnd moved in 11 months ago

Air conditioning is the simplest and possibly most effective solution.

Air conditioning is the simplest and possibly most effective solution.

I believe it too. Since we now have photovoltaics, we produce our own electricity on sunny days anyway.

Great, big south-facing windows, let the full sun pour in and then cool it down with air conditioning... what an energetic madness. In a public building, that would cause a media outcry about poor planning and waste of tax money.

Why did you even plan roller shutters and not immediately install venetian blinds or shutters? Of course, retrofitting is possible. Just complicated and expensive.

You can also retrofit external blinds [Raffstore] as surface-mounted, then you have both.
With air conditioning, at least install blinds inside.
It is not as effective as outside but better than nothing.
Otherwise, the air conditioning would not be able to cope with the heat in direct sunlight or would have to be completely oversized.

When shading, pay attention to the distance from the window as well as the position to prevent heat buildup and cracking.