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The leaf stains being organic, your roof mix should clean it very well. Let us know the outcome.

dabber wrote:

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Hey everyone ,   I have a roof cleanning , shingle , with heavy brownish black olive tree,  tree leaf stains , as well as black mold , I searched the fourm first to see if I could find anything , I could not , does anybody have any experiance with this type of stain, Maby its a southern tree thing , I know we have tons of them in  south Fl, I was just wondering if there is a special chemical witch will remove these leaf stains, Thanks To You All    Steve (Dabber)   

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Steve, like Gary said, if it's an organic stain caused by the decaying leaves that are sitting on the roof, it will come off with your roof mix. If it has been there for a long time, it might need a second applications on a few spots. We have a lot of oak trees up here in north florida and the nuts stain the concrete and are dam near impossible to remove with just a pressure washer/surface cleaner. A light coat of roof mix and BAM...gone. Again, if it is organic the roof mix will clean it.

dabber wrote:

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thanks Ray    The roof mix did a good job of cleanning , coustomer was thrilled  Thank you    Steve

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 In the future, for really bad stains, try some TSP in your mix!