Been chasing a roof leak for a while. First seemed to be some old patches that had failed, cleaned off and redid. Seemed to work. Then leaking again. Seemed to be around the fan, recaulked and seem...
You can do your own leak test take a leaf blower run it into the RV through a window. Seal it up and go around all areas that might leak with soapy water solution. If you see bubbles you have a leaky area. mark area keep looking. repair area do another leak test. No bubble no leaks.