I have some concerns about drone roof inspections. Apparently some inspectors are using drones as a complete inspection without ever walking on the roof. Now I admit some roofs are unwalkable but that should not be an all roofs excuse. Some inspectors are using their inspection agreement to limit the inspector's liability if something is missed using a drone exclusively. Do not sign an agreement with this limitation. Your inspector should do everything possible to try to get on the surface of the roof to check how secure the shingles are and feel for soft spots in the decking. You can't do that with a drone. Overall, the method used for a roof inspection will depend on the situation, the type of roof, and the expertise of the inspector or roofing professional involved. Always consider the safety aspects and consult with a qualified expert for a comprehensive roof assessment.