Cap Flashing

Cap flashing is a type of metal flashing used to protect the intersection of a vertical surface, such as a wall, with a horizontal surface, such as a roof or deck. Cap flashing is typically made of a durable, corrosion-resistant material, such as galvanized steel, copper, or aluminum, and is installed over a base flashing layer. Cap flashing is designed to direct water away from the intersection of the vertical and horizontal surfaces and to prevent moisture infiltration into the building envelope. Cap flashing is commonly used in roofing, siding, and waterproofing applications, and it can be shaped and installed to fit a variety of roof and wall configurations.