This is what I use on our roof. I clean it with the Dicor product and then use this stuff on it to protect it each fall. Now that we fit our trailer indoors it is less of an issue but I would like it to stay soft and last a long time so I am going to continue using it.
https://dicorproducts.com/catalog/ro...of-protectant/
This is what we clean it with.
https://dicorproducts.com/catalog/roof-products/clean-protect/rubber-roof-cleaner/
Edited by: WildWildWest