In the family category and parameters dialog select cut with voids when loaded and click ok.
How to cut a hole in roof in revit.
Cut an opening in a floor roof or ceiling.
Open the revit family with unattached voids and click create tab properties panel family category and parameters.
Create an in place family roof at choosing void extrusion.
You can use model in place when you want to cut system families like roofs or walls.
Ideally in a section view draw the contourline of the void using the pick line option on the base of the inside edge of the roof.
Structure tab opening panel.
Easy step by step tutorial on how to cut a dormer opening into a roof video 2 of 3.
Create the walls and roof elements that make up the dormer.
Click by face or vertical.
If you chose vertical select the entire element.
Load the family into the project and place it.
Use the join roof tool to join the dormer roof to the primary roof.
Select the object to be cut.
Beginner tutorial how to fit a stair through a floor.
Create a dormer opening in a roof.
Architecture tab opening panel.
Do not use the join geometry roof tool for this task or you may.
If you chose by face select a face in the floor ceiling or roof.