For creating complex roof it might be easier if you create separate roof then use join roof tool to join them later.
Revit how to create a custom roof.
Using shape editing tools.
Create a dormer opening.
We can learn it with watching this video.
Select the main roof then click on dormer walls and roof.
Creating complex sloping roofs in revit 2014 roof junctions controlling roof slopes and levels.
Please like this tutorial.
This is the easiest way to do it.
Create model file select the surface or the extrusion use file export selected objects and select the sat file extension.
Open up revit and create a new structural framing complex and trusses.
Open up the front elevation and hide the level in visual graphic vg.
You may have to adjust its xyz location before finishing the mass which can be accomplished in plan or elevation.
I believe this tools are not design for this purpose.
Located in the architecture tab this tool is used to create a dormer shaped hole in the main roof.
4 generate revit roof in revit create a new mass and import the sat file from the previous step.
But i m not really sure if this is a best practice.
You need to create the bay window roof separately.
Tutorial revit architecture 2017 lezione 40 inserire e personalizzare scossalina tetto in revit how to create and custom fascia and flashing roof in.