Gable Wall Flashing is a protective roofing component installed along the edge where the roof meets a gable wall. Its main purpose is to prevent water from seeping into the joint between the roof and the wall.

Gable wall flashing is typically made from metal (such as zincalume, colorbond, or aluminum) and shaped to deflect rainwater away from the intersection between the roof cladding and the vertical gable wall. It helps protect the building from water ingress, wind-driven rain, and moisture damage. It also gives a neat, finished look to the roofline.