[Festus2]

When you are set up and leveled, check to see if the roof of the slide has a slight slope AWAY from the main body of the trailer. When level the slide roof should not be sloped towards the RV.

Secondly, there is a "flapper seal" at the top of the RV at the point where the slide is located. When you extend the slide, this flexible seal should "unfold" along its entire length. This seal now acts as a barrier to water sitting on the roof and flowing towards the RV. Sometimes, the seal becomes rigid and does not unfold properly allowing water to seep into the interior near the top of the slide. The seal may also not be positioned correctly and would have to be repositioned so that it can do its job of keeping water from finding its way into the unit.

There are some seals and molding along the exterior bottom edges which also may need to be recaulked.