Z Flashing, also known as Z Bar Flashing or Z Channel Flashing, is used to provide a weatherproof seal and protection against water intrusion at horizontal joints, such as where a roof meets a wall or a deck. Its features include a folded “Z” shape that creates a barrier against water and a durable material, such as galvanized steel or aluminum, that resists corrosion. The benefits of Z Flashing include improved waterproofing, reduced risk of leaks and water damage, and enhanced durability and longevity of the building envelope.