Please take it easy on me. I am putting up rough cut board and batten on an old garage. I am looking for tips on how to treat the gable ends as the old metal roof was just bent and nailed over the edge.
Remove the fasteners securing the roof over the edge and bend the metal up so that you can install the fascia.
Get some rake metal to install on the rakes as opposed to just bending the metal over the edge.
The rake metal should cover the old bent up portion, but it depends on what metal profile the roof is.