This is the easiest way to do it.
How to create roof in revit 2020.
For creating complex roof it might be easier if you create separate roof then use join roof tool to join them later.
This video demonstrates the following.
But i m not really sure if this is a best practice.
See hd version of video tutorial here.
You need to create the bay window roof separately.
To create a sloped roof in revit modify the footprint sketch of the roof by selecting and specifying the slope defining edges of the roof.
Open the 02 lower parapet floor plan.
Now you can select a tool from the draw panel.
Using shape editing tools.
To create a roof for the project first open the level closely associated to the roof by double clicking it in the project browser.
Here the lower parapet level will be used.
Create a sloped roof with an overhang.
Display a floor plan view or a reflected ceiling plan view.
Add a flat roof.
Add roof lines with a slope and an overhang defined.
When performing the procedures you may notice minor differences in.
When editing the roof sketch select the edge or edges you would like to slope and select defines slope on the options bar.
I believe this tools are not design for this purpose.
In part 5 of the tutorial you create a flat roof and a sloped roof with an overhang at the entry.
Then on the architecture tab of the ribbon click the roof tool to enter sketch mode.
In the drawing area angle icons identify which lines of the sketch define slope.
This video was recorded using revit 2020.
Click architecture tab build panel roof drop down roof by footprint.
On the draw panel select a sketch or pick tool.
Click architecture tab roof drop down roof by footprint.
Tutorial on roof construction modeling in revit.
On the options bar for overhang enter 600 and select defines slope.
Create a roof by footprint.
Attach exterior walls to the roof.
To edit roof.
Add a slope defining roof line.