Which of the following is NOT considered a siding accessory?

Fascia is not considered a siding accessory. Siding accessories are components that are used in conjunction with siding to enhance its functionality, appearance, and overall installation. Corner trim and J-channel serve specific roles in siding applications. Corner trim is used to finish off the edges where panels meet, providing a clean look and protecting the corners from damage. J-channel is used to create a channel for siding to rest in, allowing for proper installation around windows and doors.

Z-channel is also specifically used as a flashing or trim, aiding in directing water away from the edges of siding installations. It plays a role in managing moisture and ensuring durability in siding applications.

However, fascia is a component that is primarily associated with the roofline of a building. It covers the ends of the rafters and is often part of the roofing structure rather than the siding system. Therefore, fascia is distinct from the other options that are integral to the siding process, marking it as not a siding accessory.