In drawing.tool rooms and roofs are automatically generated once the wall geometry encloses a space. The default flat roof can be changed to a single sloped roof, hip roof, and gable roof. To create and edit roofs, follow these steps:
Step 1: Go to the 2D view, select a room and click the sloped roof icon:
Step 2: Change type/properties of the roof by clicking on the roof geometry and editing values from the panel on the left.
Note: Roofs can be selected in 3d as well.
Note: walls will adjust to the roof slope.
Complete Step-by-Step Workflow:
Alternative method using curves:
Create a level above the rooms that require a sloped roof
Using the Rectangle command under curves draw the roof footprint on this new level.
Select the newly created rectangle and click create a sloped roof
A sloped roof, which can be further modified, has been created over top of all of the rooms under the defined footprint.