Keep in mind each roof tile needs to be within 6 range of a wall to not collapse.
Rimworld fix roof.
A remove roof area will cause pawns to remove any roofs in a given area.
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.
I have tried building even a small 5x5 room and it still does not roof up.
Is this an alpha bug.
I deconstructed the door then rebuilt it.
Even when i went to the expand build roof button and cover the whole room.
Should i quit playing and come back in 6 months.
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.
Colonists will be able to remove overhead mountain.
It can be quite a bit larger than that and still not fall in.
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.
So in my case i had expanded the room and 20 of it was left unroofed.
A build roof area will cause pawns to build a roof in the specified area.
Rock roof mod is a simple mod just to patch core.
I built a buidling with walls and floors and a door but for some reason it has no roof.
A ignore roof area will cause pawns to not alter the roof in a specified area.
The workers only built the floor and walls and doors but still no roof.
It seems the roof building is triggered only upon completion of an enclosed room.
Colonists can build structures of a various materials each with different beauty flammability and hit points.