That seems like an understated way to phrase that particular recommendation. I mean, it's not possible to install roofing paper once the shingles are in place. So what you're really recommending is that all of the shingles be removed and new shingles be installed over roofing paper. Right? A roofer reading your recommendation will know exactly what's involved, but a customer might not *get* the rather large scope of work that's implyed by that sentence. Exactly. And therein lies the dilemma. "Screw 'em," sounds good, till one realizes that saying, "Screw 'em," means someone--builder/roofer/seller--is going to have to spend thousands of dollars to correct the deficiency. Those thousands will not be eagerly parted with, and the builder/roofer/sometimes-the-seller will call the AHJ to settle the issue. The builder and roofer, of course, already know the answer. Ultimately, all the buyer and seller hear is that Code Enforcement overruled the HI, who apparently didn't know what he was talking about.