After you sketch walls and a roof for your design sketch another roof that you want to join to the original roof.
Revit roof by wall.
You will get all the answer in this short and efficient video.
Use pick walls if you want the roof to automatically adjust when walls are moved.
See hd version of video tutorial here.
Create the dormer roof and join it to the main roof.
Select the wall type and constraints for a dormer that will be added to a roof.
Check out the complete blog post.
Create the roof opening and finish the dormer.
Now we are going to join the walls to this roof so that it becomes pitched exactly as the roof is.
In revit how to use revit modeling revit revit 3d revit 3d modeling revit architecture revit tutorial roof in.
This video was recorded using revit 2018.
Select each boundary line and set the value in properties or in option bar.
Confused by revit roofs.
Now select one of or all the walls you that want to attach to the bottom of the roof and mould into the roof s shape.
Note that you cannot add the second roof by editing the sketch of the first.
If desired set the lines of the second roof to be slope defining except the roof line that will be coincident with the first roof or the wall.
Move the walls to the dormer.