It looks like the roof running east west is already joined with the highest roof running n s so joining your low roof to the e w roof is causing a conflict because revit doesn t know which join to give priority to.
Revit roof intersection.
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Click architecture tabbuild panelroof drop down roof by footprint.
You could try unjoining them all then re joining them in a different order.
Display a floor plan view or a reflected ceiling plan view.
If you choose not to move the roof to a different level revit notifies you later if the roof.
Revit architecture forum roof intersections.
In other words i d like roof 1 roof 2 roof 3 and roof 4 to all be joined with no overlap internally.
9 join roofs add opening to create dormer.
This tool is located in the modify tab.
If you try to add a roof on the lowest level a dialog prompts you to move it to a higher level.
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Use it to extend the dormer roof to the main roof.
Then follow these 2 steps.
Creates a roof using the building footprint to define its boundaries.
In the attached massing model i have several roofs that i wish to simply clean up where they meet so that when i look at the floor plan and section they appear as all joined together.