Damp rafter between batten and felt

[rob_em]

Hi everyone
After heavy rain I have noticed that rafter is getting slightly damp from the old missed nail. I'm not getting any leaks on the cealing or anything major. I have looked on roof and I don't see any damaged tiles or anything. It only happens when rains a lot and it's windy. Pitch of the roof is small as well. My question is. How much of this small water leaks can the rafters take? I'm sure that it's a sort of leak that it gets wet a bit and then quickly dries uyt as well as the ventilation is good. I have sealed the hole in the batten and it improved a bit

 

[Wayners]

Odd that..
You would think you've stoped it plus hard to understand how it's happening...

Any chance of lifting wooden batten and felt up then sliding some felt under?

 

[rob_em]

I think it only happens when the water is standing there very long rains for a week and then... Pitch is low as well cracked rafter from a missed batten doesn't help