Inside the roof there is ripped felt which is caused by slipped tiles because I can see daylight from inside. The felt is tucked behind the wooden beam there but it's not attached to anything.
This is where the two slopes of the roof meet, see next pic
Should the felt on the two slopes be joined to each other?
I'm getting a roofer out but i wanted to know what it should look like normally, the last roofer that fixed slipped tiles didn't seem to do anything with the felt and the batten that I can see looks like it has a bit of mould on it so i'm wondering if that should have been replaced too? I also think that it might be the same spot where they slipped last time, any ideas why it might have reoccurred?
Cheers