A recent repair to a round/rolled eave valley copper valley near Cleveland, in Northeast Ohio.
This is a technique that I tried to copy from Erno, the master craftsman from Germany.
The house was re roofed a few years ago and the workmanship was terrible. There is a multitude of flashing problems.
This valley section had been leaking for years and the previous roofers shingled over the existing rotted wood.
I removed the existing shingles (and the aluminum sheet they nailed over the rot), rebuilt the rafters,decking, and soffit. And installed new copper valley flashing and gutter extension.
How did I do Erno?