Whether you should use scaffolding for roofing work depends on the size and scope of the job. For a one-person repair of a one-story flat roof that takes a day or less to complete, a secured ladder should be sufficient. However, any roofing job that requires four or more workers should have scaffolding, as do any tasks that involve the entire roof. Due to the high volume of tools typically used in these more complex projects, the scaffolding should have an edge around the platform's perimeter to protect people on the ground from falling objects.