Float up to the roof from outside not from the inside of the building and disable it by typing tcl again.
How to get to the roof in fallout 4.
The roof is one of the floors in the museum of freedom in fallout 4.
Had 2 of them on the roof for hours.
Try opening the console and type tcl which disables clipping.
Nov 14 2015 2 52am.
Nov 14 2015 2 42am put stair cases to all your roofs lol 5.
For fallout 4 on the pc a gamefaqs message board topic titled npc on a roof.
Or tell them to go to the ground.
Assign them and click on the ground.