Use join unjoin roof tool.
Revit tapered roof.
9 join roofs add opening to create dormer.
A constant thickness floor or roof supported by sloped non planar framing.
A variable thickness material used to slope the surface of a horizontal plane for example tapered insulation.
Use it to extend the dormer roof to the main roof.
Revit tapered roof cricket with in place sweep blend cadclip duration.
Tapered backwashes can also help reduce the insulation height at the roof edge.
This tool is located in the modify tab.
Then follow these 2 steps.
The program is compatible with following revit versions.
When roof drains are located a great distance away from a sloped roof edge more than 48 it can be more cost effective to use a tapered backwash.
To create a dormer model required walls and additional roof.