Water inside window frame/seal
We have had few days of heavy rain here in WA. Yesterday, we noticed good amount of water is sitting inside the window frame railing above the bed at the back of the unit (2016 Class C 28Z). This window is a fixed window and it doesn't open. I hate to make couple of hours round trip to the dealer and leave the unit and ... ! Is this just the matter of applying some sealant around the window frame outside or is more complicated than that such as window molding and etc? If a sealer can do the job, is there any preferred brand for RVs? This is our first one.