Just went through this with my RV, Bedroom floor would get wet when it rained next to where slide meets outside wall. Well we had a storm through Thursday night and low and behold the wife woke up and felt water on ledge under window. Got a flashlight and seen the water running in from the bottom of the window. I resealed around the window from 3/4 way down the side all the way over the top to same point on other side. I flooded window for 3 minutes when we got home since we didnt get anymore rain while camping and didnt see anymore water coming in. So if you have a side window in your slide that could be it.