The wall must be attached to the target roof and the target roof must be a footprint roof.
Revit merge roofs.
Extend roof along eave 1.
Use join unjoin roof tool.
This is a general.
9 join roofs add opening to create dormer.
You can join roofs to other roofs or walls or unjoin them if they were previously joined.
Then follow these 2 steps.
Use it to extend the dormer roof to the main roof.
You cannot join a roof to more than one top face of another roof.
The wall must be attached to the target roof and the target roof must be a footprint roof.
This is the easiest way to do it.
Discover free revit bim objects for roofs.
I believe this tools are not design for this purpose.
Draw a couple of attached boxes representing a main building plus a building extension.
Select the 2 top faces.
You can join roofs to other roofs or walls or unjoin them if they were previously joined.
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.
This tool is located in the modify tab.
To create a dormer model required walls and additional roof.
Choose plugins instant roof make roof in the pop up menu then choose calif ranch from the roof style pull down menu.
For creating complex roof it might be easier if you create separate roof then use join roof tool to join them later.
Eric wing dives into flat roofs first showing how to pitch insulation to roof drains add crickets and warp roofs to fit sloped framing.
From flat roofs to fun free form roofs and everything in between hip gable mansard dutch hip combination and gambrel.
Examples merge roof planes example 1.
This course covers the topic of adding roofs roof framing and detailing with revit.
You need to create the bay window roof separately.
Download manufacturer approved bim content for roofs.