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.
This triggers a room check and the builder immediately started roofing the new section.
Keep in mind each roof tile needs to be within 6 range of a wall to not collapse.
Colonists can build structures of a various materials each with different beauty flammability and hit points.
I deconstructed the door then rebuilt it.
A ignore roof area will cause pawns to not alter the roof in a specified area.
Rock roof mod is a simple mod just to patch core.
This is useful for things like.
It seems the roof building is triggered only upon completion of an enclosed room.
Structures leave ash on the ground when burnt.
A remove roof area will cause pawns to remove any roofs in a given area.
It can be quite a bit larger than that and still not fall in.
A build roof area will cause pawns to build a roof in the specified area.
I built a buidling with walls and floors and a door but for some reason it has no roof.
How to remove thick roofs overhead mountain use the regular remove roof area option found in the architect zone area menu to draw an orange area above the roof you want to remove.
Colonists will be able to remove overhead mountain.
The workers only built the floor and walls and doors but still no roof.
So in my case i had expanded the room and 20 of it was left unroofed.
I have tried building even a small 5x5 room and it still does not roof up.
Should i quit playing and come back in 6 months.