Another newbie roof

[daydreamer]

Just for my own clarification and perhaps CM's...

So the trick is to make a second floor over half of the house?
What is the purpose of the knee wall?Thanx roofmeister.

If you don't have the 4 walls, you don't have a 2nd floor. Calling the wall a "knee wall" in the program makes it get cut off where the roof plane crosses it.