I have coated my roof and I must say if it holds up as good as it looks I have surpassed my needs. This only one coat it got too dark to see so maybe I'll coat it again in the near future.
If I were to rate this coating today it would be
but let's face it time will be the true test. I did a double cleaning of the surface just to be sure it was clean.
I think I have achieved my goal of deleting the black streaking at least for a while this stuff feels pretty tough.