This porch has decided to throw a few holes in the wood so water gets in and allows the rot to slowly eat away the panelling. Seems like a real headache to have to remove the whole roof just to change the internal panelling most would think! But on removal of the felt you can see just what's going on and Mr rot is eating its way through the whole roof!
Total strip out of old rotten wood and the roof, fascia etc and sprayed with a good wood treatment, new boards installed and felted ready to tile.
Then it rained !