Have a talk about safety on the site. Go beyond all their insurance, and documentation…. but ask if there will be crane elevators used (safer) than men on ladders.
Ask if they will be freely walking 30 feet up, on a slanted roof…without ropes and harness…
TV shows in Canada, show how much more requirements of rails used.
Thing is…. would you want to even live in a house that a man died on? One slip….and the horror begins. Really?
A sizzor crane just does not cost that much!
No crane, no job…. your choice….NOT theirs!