Following the recent high winds I ventured up into the roof (for the first
time since moving in) to check for any damage. I was suprised to notice that
there isn't any roof felt, you can see straight on to the underside of the
tiles.

Is this normal? If so, is there anything I should be doing to keep the
weatherproofing in good condition? The slates appear to have been pointed at
some stage, but most of it has fallen off. Should I look at repointing the
inside of the roof?!

Cheers for any advice,
James