I had mine inspected two years in a row by a very god mobile RV guy, was very thorough and caught a couple things early. RW allowed them but don't now. From what I have seen and heard, it is like atom ant said, it gets your inspection signed off for about $250 and keeps the warranty. I hit the roof 6-7 times a season to scrub it, touch up the sealant and do a good inspection. The nearest place to get mine inspected was CW and they wanted me to drop it off and leave it for a couple weeks.
Skip & Patty
2013 Redwood 36RL
2015 Ram 3500 Laramie CC DRW 4x4 (Bertha)