My old 8x4 shed / mini workshop (18th birthday present) is still in Mums back garden and a few years back a mate (with me helping) replaced the (flat / sloping, whatever that's called) stock roof with a larger (greater overlap on the front / door end) OSB panels.
We felted it from bottom to top, felt nails ever few inches on the overlaps and round the edges and the sides had fascias screwed over them.
Mum phoned during the recent storm to say that most of the top strip had come off and in following winds, as did the rest of that strip later on.
Now, there was no adhesive visible and I can't remember it being used so what might have allowed it to pull off so cleanly / completely?
All the nails are still there (felt ripped round), as are the fascias that are trapping the top strip on 3 sides so it really has been ripped off?
I was wondering if it was being flexed (sucked) up and down in the middle of the strip it might have worked hardened the edges where it goes over the edges and behind the fascias and that's where it initially let go?
So, when we get a mo (and on a warm dry windless day) I intend to remove the fascias (screwed on), all the nails on the overlap and re felt and nail the top strip, but should I also glue it on?
Cheers, T i m