Advice: What To Do, If Anything.....

I know what I am going to do. And for me, it's gonna be tough, but it's my only choice if I want this fixed anytime soon.

I am going to do it myself. I am ok once ON the roof, it's just gettin there that's the nightmare. I am going to reseal all four vents and also seal every single screw on the roof. It may take a span of several of my days off, but that's what I have decided to do.

Also, I agree about the not paying part. That's not in me to do......I do owe him and he was nice enough to finance. The job should have been right when finished, though.

Does anyone know of an actual GOOD spray seal product similar to Flex Seal that really works well? I have some brush on sealant, but doing every screw would take forever. Something to spray on would be much faster.

Thanks.
I'm a firm believer in 'do it yourself'. All roof screws should have a rubber-under-metal washer. Those seal incredibly well. A dab of silicone in the hole wouldn't hurt . I'd check what they have done and see if anything obvious presents itself. If you don't find an obvious water entry point, don't go redoing their work.. I'd bet with a little investigation on the roof you'll find their oversight. If it's simple, fix it and move on. If not, I'd ask him nicely once more.. then sic the insurance company on him.