Thor Forums

[Booner]

Many of the places I want to travel to in the motorhome (former CA rental, Thor Majestic 23A), involves driving on gravel roads and of course they are dusty, and a lot of this dust makes it's way into the back of the coach. At first it looked that my side door was sprung a little bit at the bottom, but I think I've fixed that. But on a resent trip to the family farm to help with harvest, I found a lot of dust making it's way into the coach in the area of the cabinets that are over the rear tires. In looking under the coach in that area, there are gaps between the underside of the coach and sidewalls, so I believe that is where the dust is getting in. So I need to fill in this area, but the question is what should I use? Expanding foam, something like Flex Seal, or the tape used to seal the seam on the roof (don't remember it's name) ? But before I do this, is there a negative for using some type of sealant as it may trap moisture that leads to rot? Or does someone have a better idea? I should mention, I have an advanced degree in "Southern Engineering," and while most of the time my projects work out pretty well, every once in a while my "home brewed" fixes compound the problem, and that's what I want to avoid in this case. Any help or suggestions are appreciated. I guess what I'm asking is what should I use to seal the bottom edge of my coach?