We picked up our Alpine the end of Apr. For 4 months we lived in a CG under some trees that seemed to ooze sap all the time. Now we are under an Oak tree that is constantly throwing acorns at us. The plywood joints on the roof have a black line following them. One section of the roof has the black all over that entire section. In the picture you can see what it looks like after scrubbing the left and right side but not the center with bugs-n-all and Dicor roof cleaner. I have a lot more scrubbing to go. Going to try fantastic as suggested by Chuckster57. Does anyone else have a suggestion for something that works well? Does anyone know why one section would be worse than the rest? Could it be they forgot the insulation in that section? I sure hope not.
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