What typically covers the ends of rafters or trusses in roofing?

Fascia boards are typically installed at the ends of rafters or trusses in roofing. They serve both aesthetic and functional purposes. Aesthetically, fascia boards provide a finished look to the roofline, concealing the ends of the rafters or trusses and creating a clean edge. Functionally, they also help to protect the underlying structure from weather elements, such as rain and snow, by providing a barrier that directs water runoff.

Understanding the context of roofing, soffit boards, for example, are often installed on the underside of the eaves and work in conjunction with fascia boards, but they do not cover the ends of rafters directly. Gutter boards are typically associated with the installation of gutters but don't serve the same purpose as fascia boards. Underlayment sheets are used beneath roofing materials to provide an additional moisture barrier but do not cover the ends of rafters or trusses. Thus, fascia boards are the correct choice as they fulfill the role of covering and protecting the ends of the rafters or trusses.