Metal cladding of dormer and balcony — which technique should I choose? Alternatives for drainage?

[Messier1994]

Planning to extend the hall and add a balcony on the front, here are before and after pictures:


The idea is to cover the dormer and balcony with sheet metal. From an aesthetic perspective, I would like the sheet metal to be as "smooth" as possible. But what techniques are available?

I don't know much about this, but there seems to be something called bandtäckning, and looking at how other dormers are designed, it seems to be done with something called standing seam. Is this the only option available? I guess you can't get a sheet that is about 3 meters wide and 5-6 meters long? How would you do it?

And the other concern I have is, how should I manage the water runoff? I would really like to avoid an overhang on the roof and a gutter. Would it be enough with a vertical seam of a few cm to make the water run off to the sides? Any tips?

 

[plåtrickard]

Fotränna you can have, bandtäckning is done in a maximum of 60cm wide metal sheets.

 

[Messier1994]

You can have a foot gutter, seam roofing is done in sheets up to 60cm wide

A foot gutter will be perfect, thank you very much!