Abstract: A support assembly for supporting sheathing material sheets during a roofing or re-roofing operation has two brackets for securing at spaced locations on a roof frame. Each bracket has a base member for lying along the incline of the roof, a hook at one, upper end of the base member for hooking over the ridgepole, roof frame member or existing roof sheathing, and an upright member projecting upwardly at the opposite, lower end of the base member for providing a support for storing and cutting a stack of sheathing sheets placed over the base members of the two brackets.