This option turns off the roof slope extrusion for the line.
Revit make a flat roof.
Attach interior walls to the roof.
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.
Make sure you have selected roof by footprint from the drop down tools.
Add a flat roof.
Get this revit file here.
You can also use toggle slope defining on only a few of the lines to create different roof profiles such as a gable.
Add roof lines with a slope and an overhang defined.
When editing the roof sketch select the edge or edges you would like to slope and select defines slope on the options bar.
Go to the new level for the roof under floor plans on the project browser.
Select toggle slope defining for each line of the roof outline.
Your now have a flat roof.
Select the lines of the roof outline and right click over the line.
Let s start off with a flat roof first.
Create a sloped roof in revit step 1 draw your roof step 2 define the slope.
In the drawing area angle icons identify which lines of the sketch define slope.
Select finish roof on the create roof footprint ribbon.