The roof tiles above our carport are letting in water, which runs down the felt, and pours out in a stream (blue arrow). This has rotted the edge of the felt, and the ceiling is consequently degrading (red arrow):
The amount of water in heavy rain is moderate, like a tap turned on so it just pours. There is no leaking in the loft or garage - just the protruding carport section. Is there a less drastic solution?
The bungalow was built in 1965, and the others in the row have a similar problem.