Scott M. answered • 11/20/19
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REVIT Expert, with 30,000 hours accumulated. 30 years' experience.
Create a solid extrusion. On top of that, create a void extrusion, and using the cut tool, cut the surface of the solid, to reveal the free form shape of the roof you want to create. Next, create a "roof by face", and select the revealed free form surface.
