Leak in Slide

[Dembones]

I have a Cougar fifth wheel. There is a leak coming from the lower inside corner of the slide in the bedroom. It leaks whether the slide is in or out, but it seems to be coming from the inside of the slide. We have slide covers and there is no water whatsoever on the top of the slide. How does water get inside of a slide?

[gnirwin]

Coming in from around outside edge, check all caulking, could even be coming down outside wall and wicking under slide. Check underneath slide .