Who has already done external cladding from aluminum panels: is there a noticeable difference in thermal insulation or is it more about the appearance? I wonder how justified it is to install them in our climate (-20 in winter, +30 in summer). ?

I'm sharing with you the contact of Glamour Decor Australia. You should contact these specialists and they will tell you all about aluminium exterior cladding, check out their website https://glamourdecor.com.au/services/ . They explained to me that such panels are ideal for extreme conditions. They gave examples of buildings where the panels are under the scorching sun, and after years there are no cracks or deformations. I was at their site (it was a modern commercial building in Sydney) and the facade looked like new, although it was several years old. So the choice is obvious.

Interesting topic, I was also thinking about external cladding, but haven’t decided yet - I’ll follow the discussion.