My rubber roof, I believe its epdm, is covered with spots. Had rv tech inspect it and says roof is fine and looks like got sprayed with something. I keep rv in a building but noticed these after leavi...
If asking a question...what do we think about the spots, you could post a pic, that would get better replies.
In my experience leaving some types of spots, is better than scouring to remove them. OTOH, some spots may come off quite easily, if using the right product.
My roof has some spots, I think are from mold/mildew, that didn't come off when using a safe epdm cleaner. Not a big deal IMHO.