the bear II wrote:
At one time there were inflatable devices to place between the topper and the slideout roof. These were to stop the flapping of the awning maybe something like that would keep the water from pooling.
It sounds like the roof of the slideout needs a repair to stop the leak. Your slideout roof should not leak.
I've ran silicone sealer along the edge of the roof, but I have had to do it each year for the past couple of years, and I'm tired and want a permanent fix. And an inflatable device means getting up there on a ladder even for an overnighter. I might as well just leave the slide closed.