The following is a quote from trusted DBP remodeler, John Hogan of Blue Nail Exteriors.
I like drones because they are safe, efficient, and fun to use! Homeowners should not allow anyone on their roof without a contract in place and their certificate of insurance. Without a contract, they are responsible for any injuries that may occur to the estimator while on the roof.
For your next project, consider the use of drones for photography and video for roof inspections.