Choreboy wrote:
I was amazed to discover only wood under the shingles of my house, which
was redone about fifteen years ago.

A neighbor said several roofers have told him that's the best way to do
it, and he intends to nail his shingles directly to his planks in the
future. Roofers have told him roofing felt shortens the life of
shingles by causing them to get hotter in the day.

I don't believe the felt makes shingles hotter, but I wonder about
moisture. Is it possible that in some circumstances, the layer of felt
can make shingles more hospital to fungi?

Has anyone else heard the theory that it's better to skip the felt?

I've also heard the theory that the world is flat.

The NY State Residential Code, based on the IRC with some minor
revisions, requires underlayment. The manufacturers of every roofing
shingle I've ever run across require underlayment.

Who exactly are these roofers that know more than the manufacturers and
feel they can ignore code?

R