We had a roof issue as well as a substrate failure on our 2012 Sportscoach Cross Country that required that the entire roof and sheathing be removed and replaced. The only issue that we experienced was making sure all the duct openings were properly cut, debris removed from the ductwork and ceiling light fixtures cleaned and reinstalled properly. Make sure you inspect all of the roof penetrations and trim speaking and caulking and do a follow up inspection 6 months later as heat, sun and movement could cause some cracking or separation. Otherwise all went well. Good luck!
2012 Sportscoach Cross Country 385 DS Freightliner XCR w/ Cummins ISB 6.7L 340 hp
2009 Saturn Vue, Blue Ox Alpha, RVi Brake 2