Notch and Refine Flashing Edges

What happens here

Place the partially formed metal flashing on a stable surface, such as a sawhorse. Using a utility knife, carefully score and cut notches into the ends or specific sections of the flashing. These cuts are crucial for creating mitered corners or for relieving stress in the metal when forming complex angles, ensuring a snug and neat fit around the window. The video shows this being done to create a relief cut or fold-over tab at a corner.

Goal: This step involves making precise cuts and notches on the bent metal piece to allow it to fit seamlessly around the window frame, especially at corners.