Staples at parameter compared to screwed. Heard about a Montana where the staples were pulling out.
Armor Roof: Has a lifetime labor and materials warranty which is transferable to next owner. RV Roofis another process used by Howard Payne from RV Dreams.
Noticed Montana went to composite 5″ trusses from the galvanized steel. Claim is it allow for better fastening of roof deck. They also claim their radius ceiling is a true 5″ from side to side. Other brands tapper down from 5″ in center to as little as 1″ on the sides.
Wondering about roof venting to allow moisture from AC to escape?
If the air duct is insulated this might help.
Highland Ridge 2016(owned by Jayco) previously called the Open Range, give a 12 year warranty on roof, with the first 10 years 100% covered. Claim their PVC roofing never needs to even be treated.
Want to read up on the Alpha ply rubber roof lik what’s on the 2016 Redwood.