Styles of Truss Tails Some truss tails are designed to prevent the ends of the truss from looking bulky or unfinished. These are angled to fill the space beneath the eave without prominently standing out. Some truss tails extend out past the end of the roof and feature curves and rounded edges which give them a beautiful finish. These types of design elements can add additional value to your home by boosting curb appeal and making your home stand out from the neighbors.