Many, many thanks. So shopping list:- Roofing felt 1 roll. Special adhesive. Galvanized nails. Will try Wilkinsons.
Now for the guttering. Any advice welcome.
never used an adhesive on a shed roof.
my method goes:
1. lay felt, one strip along eaves, then one strip on ridge, overlapping lowre strips.
2. go round all the edges with galv clout nails
3. nail vertical wood lathes every 24 inches , vertically running eaves to ridge to stop wind taking larg chunk if it lifts.
4. wood strips nail on end pieces
never had a leak, never seen water running down a nail hole into a shed.