Welcome to the forum Timberwolf 50 I hope this helps. I'm pretty sure that Jayco used TPO type rubber roofs in 2001. Since it appears too be in good condition I'd just clean it and seal it with a good rubber roof cleaner and sealer. What I found on my 2007 Jayfeather is the original roof was TPO and had a texture and the roof that was replaced under warranty is EDPM and is smooth. So you might want to check it since I don't know if the same sealer can be used on both types of roofs. There is a new type of roof that I just saw the other day and don't remember what it's called but unless your KIWI had a new roof installed recently You probably have the original TPO.