I'm not sure if I didn't notice it last fall, but when I was on the roof
couple weeks ago I saw little lines. The roof is white and they look
like little black lines. Upon closer inspection they look like little
cracks. There are no leaks (that I know of) and they don't appear to be
very deep, but I'm wondering if that is some kind of paint on the roof
or if that is the same thing that is going on in the sidewalls with the
fiberglass layers underneath the top layer expand/contract at different
rates? I'm wondering what I should do about them. Paint with some roof
paint? I washed the roof 3 or 4 times this year and put on wax and 303
twice. Am I not doing something that I should be?
Here are some pictures of the roof
Appreciate all help.