There's not a lot you can do unless they're looking like they wanted to jump then you call the popo.
Make sure their ladder didn't fall down.
Ask if they could come over to my house and check my ridge tiles.
Ask if they were ok?
Funny you should ask! This did happen to us! We drove by and I kid you not.... There was an older woman on her roof.... SWEEPING IT!!!! At first I thought she was crazy taking spring cleaning to a whole new level! So I kept her in prayer. Each time I drive by she is out doing something "manly" in her yard. I came up with a story that she is a widowed woman. Last week I almost stopped. I have a feeling I will one day. She never has anyone with her or helping her. Last week.... SHE WAS PUTTING UP A FENCE! A wooden fence! By the time I got back around to her... The little stinker already had it put up! I'm curious about her. I'm still trying to think of a clever way of introducing myself to her... Just so she don't think I am crazy if I ask her if she needs help in anything! She intrigues me and amazes me. Maybe I should just catch her weeding one day and tell her that. She may be encouraged by the compliment.
I would probably just wave. People have lots of reasons for being on their rooftops at this time of year ... Christmas decorations, leaks, clearing windstorm debris. (If I had any doubts, I'd probably take another peek after an hour or so.)
Wave. My neighbor has been on his roof for the last 2 days. He is putting up his Christmas lights. He enters the local light contest. He came in first place last year.
I would probably do nothing if they’re perfectly fine, but if they are in some kind of trouble, I’d call the police and help that person