complex profile wall / wall opening surface

[leven]

Hi. Do you guys think it's possible to have the sides of the wall opening with the same surfaces as the main face of the wall? (In my case, pink in the upper area and grey in the bottom part). It is a complex profile wall. The side seems to take on the surface of the material in which the window sill is.

[leven]

Thanks for all the tips and workarounds.

[Erwin Edel]

I ussually put a column with the correct building material on the sides. The column will merge with the wall in floorplan and there's no need for SEO. You can use a beam for the top part if needed.