It consists of two gables.
Revit joining exting and new roof.
If anyone is still looking for a solution you can make a roof cut into an existing roof using component model in place.
Click modify tab geometry panel join unjoin roof.
3 edit the footprint of the unjoined roof.
You can only modify this setting if the detail level of the view is coarse this technique is useful if you have a lot of walls removing the tedious process of manually adjusting the join and boundary of each individual wall.
4 copy the roof paste it in the same place.
It will place in the new construction phase.
Use join unjoin roof tool.
To create a dormer model required walls and additional roof.
This tool is located in the modify tab.
1 unjoin the roof.
Use it to extend the dormer roof to the main roof.
I have two roofs that i am trying to join.
The eaves and type of cuts are the same but it still says they can t be joined.
This should keep you existing roof in tact and show a cut in the new construction phase.
Hope this is of assistance.
If necessary use the viewcube to spin the design to facilitate selecting the wall or roof edges.
9 join roofs add opening to create dormer.
2 create a reference plane 1 away from the edge of the second roof.
Select an edge of the roof that you want to join and then select the wall or roof to which you want to join the roof.
Create a void extrusion and make to required cut in the new construction phase apply the cut and done.
How to join two roof aug 19 2013.
3 adjust wall join display in view properties.
The third and final technique to control the wall joins is to use wall join display in the instance properties of the view.