Like Dan stated--leaks can be hard to track down. Just because you see water on the floor, doesn't necessarily mean the leak is directly right above it. Water has a way of running the route of least resistance.
It could be coming in around a window, or any other hole they cut in the sidewall for something. I'm not saying it isn't leaking from the roof, just pointing out it could be from coming from some place other.
I think you going to have to give your camper a through inspection from top to bottom. Including the sides and ends. Any caulk that has a crack should be dug out, area cleaned and re caulked. These things require a lot om maintenance. Yearly inspections are a must. I find on mine there is caulking that needs attention every year.
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2008 Cruiser CF26RK
135 Watt Solar Panel
2013 Ford Eco-Boost
Heavy duty payload - Max tow
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