I quite regularly have spaces that have a 21x21 open space on the inside with just a single wall in the center and i never have issues with the roof collapsing.
Rimworld fix roof.
Colonists will be able to remove overhead mountain.
Structures leave ash on the ground when burnt.
Enclosed areas will automatically prompt colonists to build a roof unless you apply a no roof region or if the structure is too large over 300 cells.
I deconstructed the door then rebuilt it.
Should i quit playing and come back in 6 months.
So in my case i had expanded the room and 20 of it was left unroofed.
Colonists can build structures of a various materials each with different beauty flammability and hit points.
The workers only built the floor and walls and doors but still no roof.
Keep in mind each roof tile needs to be within 6 range of a wall to not collapse.
A ignore roof area will cause pawns to not alter the roof in a specified area.
This triggers a room check and the builder immediately started roofing the new section.
It seems the roof building is triggered only upon completion of an enclosed room.
This is useful for things like.
I built a buidling with walls and floors and a door but for some reason it has no roof.
Is this an alpha bug.
A remove roof area will cause pawns to remove any roofs in a given area.
Rock roof mod is a simple mod just to patch core.
A build roof area will cause pawns to build a roof in the specified area.
Even when i went to the expand build roof button and cover the whole room.