Get them to read the JLC Guide to Moisture Control. It clearly spells out the need for flashing behind the paper AND the need to minimize caulking since it “can trap as much water as it keeps out”. What can he possibly be referring to for support of his negligence?
If I were you I’d try to make periodic visits with my camera and thermal imager just to document the deterioration…and then publish an article on it, beginning with the contractor’s arguments in favor of it.
James is 100% on the money! About 6 mos ago my neighbor complained about eyes watering, coughing, etc, get it? Mold, and alot of it. We are in SW FL so it does not take too long for mold to start growing and the exterior framing members to start rotting. I offered to help, broke out the IR camera and went through the house. What a mess. The Hardiplank was fine but the sheating was destroyed. He had to take out and re do the entire South wall of his house. I will try to find the images for you but they were on the cmptr that crashed, cannot promise anything. Keep taking images on a regular basis it will show alot and could be a great addition to your website. A time lapse IR survey, exceptional!