You know the simple rubber flap on the kitchen slide has not impressed me in its ability to keep out the outside heat and cold - maybe it is OK under the slide to keep water out, but somehow I don't think water intrusion is a big problem underneath the kitchen slide. I had recurring problems with this underneath seal getting torn, which I repaired and it was torn again, and on sunny days with the sun low to the kitchen side of the trailer I could see sunlight streaming in under the slide!! My solution for the heat/cold intrusion was to make an inside, removable, square, foam rubber seal that goes under the lip of the slide and around the corners. I stuff this seal in place under the front of the slide when I arrive somewhere, and remove it before bringing the slides in for travel. This has worked well for me. I made this from a window air conditioner foam rubber sealing kit I found at WalMart, cutting and gluing the foam rubber to size.
Oh, by the way. I have found that the far ends of the kitchen (and desk) slides where they meet the wall (behind the slide trim fascia) are a favorite place for mice to squeeze in to the living space. I have tried stuffing steel wool and strong room sprays in these places, but have decided these are the best place to put snap mousetraps baited with peanut butter. I have learned that the crafty mice can lick the creamy peanut butter off of a mousetrap trip/bait arm without tripping the trap, though. The secret is to use crunchy peanut butter and wedge a piece of peanut down in the bait arm bait hole so the mouse has to work to get the peanut, and trips off the trap.
