You need to create the bay window roof separately.
Make two roofs join in revit.
If desired set the lines of the second roof to be slope defining except the roof line that will be coincident with the.
Join roofs after you sketch walls and a roof for your design sketch another roof that you want to join to the original roof.
Select the wall and use the attach top base button to attach it to the underside of only the 5 1 2 roof.
But i m not really sure if this is a best practice.
Then from the modify tab on your ribbon use the join geometry command and select the 7 1 2 roof and the wall.
Use it to extend the dormer roof to the main roof.
If desired set the lines of the second roof to be slope defining except the roof line that will be coincident with the.
I believe this tools are not design for this purpose.
9 join roofs add opening to create dormer.
This is the easiest way to do it.
Make the roof in one piece.
You like these direct simple and to the point revit tips.
Move the roof toward the middle of the other roof to see if it will join.
Select the roof and choose between raft cut and two cut in roof properties under rafter cut parameter.
For creating complex roof it might be easier if you create separate roof then use join roof tool to join them later.
Move the roof up and see if it will join.
Using shape editing tools.
Join roofs after you sketch walls and a roof for your design sketch another roof that you want to join to the original roof.
Then follow these 2 steps.
Click view tab create panel default 3d.
We have plenty more for you.
It will join in the wrong order and you will need to use the drop down menu next to join to switch the join order.
Click view tab create panel default 3d.
This tool is located in the modify tab.
If you use two cut you have to set a fascia height like illustrated below.