In sketch mode select a roof boundary line that defines slope indicated by.
Revit how to slope a roof.
First activate add split line and draw the lines like below.
In the us the slope of the roof is typically expressed as a ratio rise in run or rise run which by general agreement in the us roofing industry always uses 12 inches as the run and states how many inches the roof rises vertically for every 12 inches the roof goes across horizontally sloped roofs commonly have slopes like 6 in 12 6 12 or 8 12.
This is pretty easy to control.
By applying the defines slope property to lines of a roof boundary you can create different roof types including flat roofs gable roofs and hip roofs.
To specify roof pitch select a slope defining boundary line click the numeric slope definition.
To create a hip roof 4 side slope define slope for all boundaries.
Changing slope angle and using slope arrow.
So basically edit sketch of the highlighted roof and trace the edge of the front roof then make sure none of the new lines are slope defining.
Revit roof slope can seem complicated at first glance but by learning a few critical features you can create any roof shape you desire.
This shape editing tools will not appear if you define the roof slope.
On the properties palette select or clear defines roof slope.
Creating a roof with different eave heights you can create a roof with slope defined lines at different.
Then use join geometry to clean it up.
Use slope arrows to define slopes on a roof such as a 4 sided gable roof.
Leave only the main roof sketch line slope defining and it will continue to slope down to the next sketch line.
You can use slope arrows to create slopes on a roof.
To create a gable roof 2 side slope remove slope for half the boundaries.
For instructions see creating a sloped surface using a slope arrow.
Whether you want a double gable roof with 6 pyramid shaped dormers or a simple gambrel roof the basics remain the same.
The following example shows a roof that you can create in revit lt using a slope arrow.
Creating complex roof in revit.
Easier than the previous method.