A pre-notched drip edge assembly and related method includes a plurality of drip edge sections interconnected end-to-end to form a continuous water barrier along a roof edge. Each drip edge section has a formed one-piece construction with a top flange and a bottom flange having an inverted L-shape with upper and lower legs. The forward edges of the top flange and the upper leg are integrally interconnected along a folded-over nose having a wedge-shape. A pair of notches are formed in the opposite ends of each drip edge section which extend through the upper edge of the lower leg and the forward edges of the upper leg and the top flange to define flat end tab areas that are inserted into the noses of the next adjacent drip edge sections to horizontally and vertically locate the same along the building roof.