Trimming walls to the roof- how to get rid of the outlines?

[Anonymous]

Hi!

I'm modelling a house in ArchiCAD and when I trim the walls I get a weird outcome, the lines of the walls are visible on the other side of the roof.
How can I change it?

Thanks for your help,
M.

[Barry Kelly]

You will probably find that the Building Material strength for the roof is weaker than that for the wall.
Make the roof BM stronger and all should be good.

Barry.

[David Maudlin]

Malgorzata Anton:

Another option: use Solid Element Operation: Subtraction with upward extrusion rather than Connect: Trim Elements to Roof/Shell if you don't want to change the Building Material Intersection Priority.

David

[Anonymous]

Thank you, it worked:)