I am sure this has been discussed somewhere on this forum,I was talking to a Rv repair guy and he was telling me that it takes a special cleaner and protectant for the type of roof that is on my 2022 hartland cyclone.He did not say what product I would need but offered to do the job for me. I like to do as much maintenance on my own equipment as I can. Can anyone help me out with what I should use to clean and protect my roof?thanks