Maximize performance of flashing
To make sure that your home’s flashing works to the best of its ability, the ends of the flashing, at each far end of the fascia board, should be turned up to make a tiny “curb.”
This forces the water to flow off the front of the flashing and across the face of the fascia.
Without these tiny end curbs, the water can roll under the end of the flashing, especially in a fierce-winddriven rainstorm, such as a hurricane.
This expert detailing is often not done by those who are inexperienced with flashing.
Furthermore, because of capillary attraction, the downturned end of the flashing that folds down over the front of the fascia board should have an air space between the flashing and the fascia board.
If the flashing is tight against the face of the fascia board, the capillary attraction of the water can actually pull the water uphill under the flashing and into the back of the fascia board, thus creating rot.
This flashing is curling the right way.