Ever see stains like this on a rubber roof?
I'm getting ready to recoat the roof on the Apex (with Heng's) and these stains are imbedded in the rubber. I tried Dicor roof cleaner and Star Brite mildew stain remover. The stains laughed. I'm not really too concerned that they won't come out, but would like to hear your thoughts. Have you ever coated over stains like this? I'm hoping that two coats will cover them, but again, not really concerned about looks, as long as they don't create a problem. BTW, the Star Brite did a much better job of cleaning the roof and I'm considering using that pre-coat. Of course I would rinse it thoroughly, but does anyone have anything to contribute on that as well?
2018 Rockwood Signature Ultra Lite 8311WS
2014 Coachmen Apex 215RBK
2018 GMC Sierra 2500HD SLT Duramax