For that price, I'll bet they use stainless steel screws and staples.😀
For a compare and contrast, check out the difference in how Jayco builds in Australia. Takes 3 days instead of half a day, and they do quality audits along the way.Not sure what explains the difference, but apparently there are different priorities for them in other places.
Lol I have a good friend with a 2 mil Prevost that has glued on fiber glass siding