Roof (Material) - originalfoo/Prison-Architect-API GitHub Wiki
##Overview
The Roof material is possibly only used in campaign maps to depict roofs on buildings.
##Modding
See Materials - Modding for scripting information and details on how to change menu, icons, sprites, and settings.
For reference, here is the default definition for this material:
BEGIN Material
-
NameRoof -
ConstructionTime-1.00000- removes it from menus -
SpriteTypeConnected -
NumSprites1 -
BEGINSprite0x 15y 12END
END
##Notes
Removed from menus so can't be placed in-game.

The design is that of a concrete roof (very plain) but there are also several adornment tiles for depicting air conditioning, stairwell, vents, etc.
Due to the way it's tileset is defined, the Roof material itself could be made to act like walls (if given BlockMovement property) and the adornments could also be made blocking (with Properties BlockMovement) - this could make for an interesting structure for use in prisons or campaigns.
To fill the space between Roof "walls", the most suitable material seems to be ConcreteTiles or maybe ConcreteFloor.
##See Also

