The coverings from 3rd parties are also a 2nd added layer to the bit of wall excluding that cladding.
Some manufacturers have cladding addons/parts available through bimobject.com, perhaps some of the profiled vertical cladding as well.
I have allways done this with textures (as you mentioned as the other option) as I do not like to see all the shadow casting on my elevations from this 3D detail, but that is personal preference.
Erwin Edel, Project Lead, Leloup Architecten
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