Final answer:
The one-piece metal assembly that fits over the skylight curb is called a skylight cap, and it's integral for creating a watertight seal during skylight installation.
Step-by-step explanation:
When a one-piece metal assembly can fit over the skylight curb during the installation of skylight flashing, it is typically called a skylight cap. The skylight cap is a crucial component for ensuring a watertight seal and protecting the interior of the building from the elements.
This term is specific to the construction and installation of skylights and is part of the flashing system that works together with the skylight trim and cover to prevent leaks and water damage.
The correct answer is 3) Skylight cap. A skylight cap is a one-piece metal assembly that is designed to fit over the skylight curb when installing skylight flashing.
It helps to protect the skylight and provides a finished look. Skylight trim refers to the decorative molding or framing around the skylight, skylight flashing is the material used to create a watertight seal around the skylight, and a skylight cover is a general term that can refer to various types of covers for a skylight.