I am very sorry to hear that your roof is starting to deteriorate again. It has been almost three years since I did mine with the Liquid Roof product and it still looks like it is holding up very well. It is somewhat dirty as it has been sitting uncovered for just about that whole time with mostly hosing off type of cleaning. There has been no shrinking or cracking at all.
I have been up on the roof frequently inspecting, cleaning the vents and air conditioner, and installing a new antenna and each time I looked it over pretty good. Did not see much, if any, deterioration of the coating. So far, so good! :)
Barney
