Originally Posted by Camper_bob
The safest way to identify your roof material is to contact Jayco directly with VIN and ask.
I did just that and just wanted to post back how responsive and helpful they are. The person I spoke with was able to tell me which material my roof has (EPDM), but since I had her on the line, I asked a few more questions but she wanted to have a tech talk to me. Being friday, she said it may not happen until Monday, and when the call came in I had forgotten I called them. The tech was able to answer a few more questions for me and said "call back anytime if you have more questions".