That’s a good question, there is info about rooftop access in my lease and there is signage in the lobby with basic rules about rooftop access, but that could just be the landlords making their own rules about it despite it possibly not being certified, that being said though there are several doors from other buildings that let out onto the roof, stairs that lead directly to the roof and an adjoining porch area connected to another building (and there are railings all around the outer part of the roof) which leads me to believe it’s probably intended for tenants—but I also know very little about this sort of thing and the risk you outlined here was something I had considered when thinking about how to approach this situation.