Use the Fascia tool to add fascia to edges of roofs, soffits, model lines, and other fascia.
 Build panel
Build panel Roof drop-down
Roof drop-down
 (Roof: Fascia).
 (Roof: Fascia). 
As you click edges, Revit treats this as one continuous fascia. If the fascia segments meet at corners, they miter.
 Placement panel
Placement panel
 (Restart Fascia) to finish the current fascia and start a different fascia.
 (Restart Fascia) to finish the current fascia and start a different fascia. 
This different fascia does not miter with other existing fascias, even if they meet at the corners.
