A roof with a few focused repair patches is normal—things age and need fixing. But if you see endless small patches, different coloured coatings everywhere, and a “quilt” of repairs, it often means the underlying system has been failing repeatedly.
Instead of addressing root causes—bad slopes, poor detailing, failing membranes—people may have kept applying temporary fixes on top. That approach works for a while, then breaks again.
If the roof looks like a patchwork blanket, ask more questions: How often do leaks happen? Was the roof ever fully redone, or only “touched up” repeatedly? You might be inheriting a long history of halfway solutions.