Before you select the wall from which to create your roof, set a desired value for you overhang in the "Options Toolbar"...
The "Options Toolbar" is probably the most overlooked portion of the Revit interface.
--
Regards,
Steve Burri
Autodesk, Inc
Client Support Manager - Revit
"JessieW" wrote in message news:1499806.1102801219135.JavaMail.jive@jiveforum1.autodesk.com...
> I'm a high school student trying to learn Revit, but unfortunately I know more about it than my teachers so I can't ever ask questions. So when created a roof, I don't know how to get an overhang. I've browsed around and can't seem to find an option for it! If you know how to do it please help.