Rimworld Fix Roof
So in my case i had expanded the room and 20 of it was left unroofed.
Rimworld fix roof. It seems the roof building is triggered only upon completion of an enclosed room. Structures leave ash on the ground when burnt. A build roof area will cause pawns to build a roof in the specified area. I have tried building even a small 5x5 room and it still does not roof up.
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. A remove roof area will cause pawns to remove any roofs in a given area. This is useful for things like. I deconstructed the door then rebuilt it.
I built a buidling with walls and floors and a door but for some reason it has no roof. It can be quite a bit larger than that and still not fall in. Colonists will be able to remove overhead mountain. A ignore roof area will cause pawns to not alter the roof in a specified area.
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. Rock roof mod is a simple mod just to patch core. Keep in mind each roof tile needs to be within 6 range of a wall to not collapse. Is this an alpha bug.
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. This triggers a room check and the builder immediately started roofing the new section. The workers only built the floor and walls and doors but still no roof.