Which type of flashing is installed between the roof covering and the sheathing around a roof's perimeter?

The type of flashing installed between the roof covering and the sheathing around a roof's perimeter is known as drip edge. Drip edge is a metal flashing that is installed at the eaves and rakes of a roof. Its primary purpose is to direct water runoff away from the fascia and prevent water from seeping underneath the roofing material, which can lead to damage of the underlying sheathing or other building components.

Drip edge plays a crucial role in protecting the edges of the roof, ensuring that water flows away efficiently and reducing the risk of water-related issues such as rot or mold. Its strategic placement around the perimeter of the roof helps in maintaining the integrity of the roofing system and contributes to a longer lifespan for the roof.

In contrast, other types of flashing serve different purposes: step flashing is used at roof-to-wall intersections to ensure that water flows down the wall, base flashing is installed where a roof meets a vertical surface, and counter flashing is typically installed over base flashing to provide an additional layer of protection against water intrusion. Each type of flashing contributes to the overall roofing system in unique ways, but in the context of the area between the roof covering and the sheathing, drip edge is the correct choice.