For angles greater or less than 90 degrees, we highly recommend you purchase our vinyl angle helper kits here. The following shows you how to angle your fence line without needing to purchase the angle helper kits. However, be forewarned that cutting the vinyl as per below isn’t easy.
A. Mark angle and post channel corner to cut on top and bottom rail according to your fence angle.
B. Cut on marked lines previously made on both top and bottom rails.
C. Insert wood into the end of the rail. This will create a strong connection between the rail and the post because your screw will have more to bite into other than one vertical wall surface on your rail.