Revit Trim Intersecting Roofs

With the overlapping roof faces in top plan view select the roof faces and use the modify convert copy to lines command and choose hidden line as the rendering option.

Revit trim intersecting roofs.

Another option occurring in the roof properties is whether the roof is set to be a truss or rafter. You can join a roof to the top face of another roof and the wall below that roof if you select the wall as the target. You can join roofs to other roofs or walls or unjoin them if they were previously joined. You end up with a group of lines showing the outline of the roof plus the intersecting line between the roof faces.

The new edge at the trim plane has its edge angle defined by the trim plane. If the trimming object is a wall or a slab the trim plane is at the closest surface. Any fascia or soffit profile that intersects the trim plane is trimmed at the same angle as the slab or roof slab. This tool is located in the modify tab.

The wall must be attached to the target roof and the target roof must be a footprint roof. You cannot join a roof to more than one top face of another roof. This is a general. To create a dormer model required walls and additional roof.

Voila the opening is cut and the intersection between the roofs is tidy even if the roof pitches differ which doesn t happen with shaft vertical openings and if you modify your main roof or intersecting roof the cut will update. Select the slab or roof slab to be trimmed. Then you can trim the roof faces to this line. Use it to extend the dormer roof to the main roof.

9 join roofs add opening to create dormer. Use join unjoin roof tool.