Re: Sch 80 in attic
No,I pulled that from the 2005 Code. I did talk to the inspector and his theory is probably the best I've heard yet. He asked, "What does PVC do in a heat box?" "Becomes pliable," I answered.
He responded, "And you don't think that PVC won't do that in an attic during the peak of summer when it 105 in the shade and under black shingles?"