also rooftop, 1610s, from(n.) + (n.1).
Examples from the Web for roof-top Historical Examples of roof-top
Somebody else is going to lose the scent on a roof-top—and I’m going to watch.
Every window, door and roof-top was filled with gay and joyous people.
Last night the lady was reading to me yonder, on the roof-top.
The roof-top was jammed with a pressing throng of—nearly naked people.
Through the trees she could see only the roof-top of the thatched cottage in the clearing.
Mildred A. Wirt