Double paper

Whew!!!!Thanks for confriming Tinner.....I was worried I had lost my mind.

Expanding a bit.....I recall getting into an argument with either an inspector or a fellow contractor and going to a current code book, only to get egg on my face; There it was in black n' white...specifically referrencing the underlayment rather than the shingles....I said, "when did this happen?"..."and why/how?".....Oh me, oh my.....The sheeples/kool-ade drinkers at it again....>>>

A few minor comments and then I'll let it go. In my opinion: Three-ply 15# definitely would be better than two-ply 15#. Two-ply 15# is better than one-ply 30#. Under tile, two-ply 30# is better than one ply 30#. We all probably agree shingling below 2/12 is insane, regardless of underlayment. Dual-80 was not better than 4-ply perforated rag. Comp shingles are two-ply. Double-coverage comp is four-ply. Laying 'shingle-fashion' eliminates berms. Laying 'shingle-fashion' allows water a chance to work back up within the system sequence. Laying shingle-fashion distracts water at dead-leak tears or penetrations. Multiple layers reduce the consequences of surface wear. Multiple layers entail heightened consciousness during installation. Anybody wanna talk about BUR cant strips?>>>

When using BUR cant strips on the rakes, make sure your shingles are really soft before bending them up and over. Don't forget to make a piece of rake metal to cover the outside edge of the cant that comes down over the shingle mould. Otherwise, the BUR cant strip will absorb water.>>>

Though I'm fully in agreement with you Jed, I have to say.

This thread has been Officially Hijacked! :side:>>>

that`s been policy forever,They tell you to do that down to a 2 on 12 pitch in place of ice + water shield-would rather total ice shield on 2 on 12 myself,if I can`t talk them into a flat system>>>