Roof sealing

You're right MIK. Looks like they turned some Chimpanzies loose on the assembly. Don't take this as the final word, but being a painter all my life, and I'm doing this to mine, just take off the loose, cracked, or separating stuff. Any more is not necessary in my opinion, not to mention it's more work. I scrape gently with a small scraper (maybe a flathead screwdriver), being careful not to gouge too deep, then clean with some lacquer thinner and rag, then use silicone sealant. I got that at Lowes, they have different colors. I think the stuff they use on the top, as sloppy as it was applied, will keep out water, so I only clean that. Again, this is just me, somebody else in here might differ.