Want to create a flat roof? You can create a roof from a building footprint as an extrusion with sloped glazing a roof cannot cut through windows or doors
Now sketch the roof boundary, position the cursor near an exterior wall and press tab to highlight the chain of walls. Convert a roof sketch to a roof element.
Click On The Project Browser, Go To The Floor Plan, Click On The ‘Roof’ Option In The Home Ribbon Of The Build Menu.
Apply the join/unjoin roof tool to project the roof to wall boundaries.
You Can See The Interior Walls Extend Through The Flat Roof.
There are several tools you can use when creating roofs.
Images References :
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.
I have the roof assembly set to variable.
You Can See The Interior Walls Extend Through The Flat Roof.