Abstract: A flashing member having a two leg construction, such member being adapted for use between the ends of corrugated roof panels adjacent to the open space below ridge type ventilators and the base of the ventilator in its resting position at the ridge of a building roof. The flashing member has a generally V-shape transverse profile, and includes one leg having corrugations formed thereupon to correspond with the surface of the corrugations of the roof panel, and a second leg interval with the corrugated leg, such leg being angularly disposed with respect to the corrugated leg and formed with a substantially smooth, flat and uncorrugated surface adapted to provide bearing support for the ventilator in its resting position. A watertight seal is then disposed between the ventilator and the roof panels.