This had the same issue but with sturges when i was trying to complete the sanctuary side quest.
Fo4 repairable sanctuary roof.
Sanctuary hills often referred to as sanctuary is a location and possible settlement in the commonwealth in 2287.
Building stairs is a good fix.
If you want a job done right do it yourself.
All this mod does is replace the meshes of the roofs in sanctuary from the broken post war roofs to the pre war roofs while still keeping the post war rusted textures.
Press either or to access the console then enter tcl to toggle collisions.
Most efficient way to repair the roofs in santuary hill is to build around the houses till you are above the roofs and then build a floor ontop of them.
Saw a let s play video where that worked.
Sanctuary s settlers don t seem to be making much progress on fixing those houses.
It also fixes an issue where houses might not register as repairable.
Let the roof floor boards extend out beyond the house.
Built sometime in the 2070s sanctuary hills was a friendly suburb of concord located on a small island about a mile north of the town and accessible only by a wooden bridge consisting of 14 prefabricated homes.
This mod allows you to repair sanctuary s houses using the workshop interface restoring their roof and outer walls and cleaning the interior.
Enclose the car port and enlarge.
Build shack walls outside the house enclosing it.
Here is an option when you fix the roofs in sanctuary.
Try building stairs to the roof.
If you don t use patch job there will still be holes in the texture of the roof because that s how the vanilla textures were made.
If you really want to use one of the surviving houses in sanctuary hills and want to patch up the wrecked roof i ve found a pretty simple way.
Those fundaments are the only tile akaik that can sink into the ground or in this case into the damaged roof.