I have no idea if it has ever been possible to get out on the roof of this building. But if the lifts are apparently left unrepaired for weeks on end (in this comic, anyway – I don’t know for sure if it was like that in reality), then probably some naughty kids (like Willie :op) could at some point break the lock on a door to the roof, and it wouldn’t ever get repaired.
Buy the books!
Read the sequel!
-
Not the warmest of good-byes…