Use the join geometry tool to create clean joins between 2 or more host elements that share a common face such as walls and floors.
Revit roof geometry joining.
With the join unjoin roof tool selected you need to click on the line of the roof which is on the face of what you want to join to the other roof.
Then from the modify tab on your ribbon use the join geometry command and select the 7 1 2 roof and the wall.
You can join a roof to the top face of another roof and the wall below that roof if you select the wall as the target.
3 adjust wall join display in view properties.
As shown in the following illustrations the tool removes the visible edge between the joined elements.
We are around the back side of the building now select this tool in the geometry tab called join unjoin roof.
The wall must be attached to the target roof and the target roof must be a footprint roof.
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.
The forgotten options.
You can join roofs to other roofs or walls or unjoin them if they were previously joined.
This is a general.
The joined elements then share the same line weight and fill.
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.
You can also use the tool to join hosts and in place families or hosts and project families.