On page #1 of this thread there are pictures that I took of the floor with the pedistal table floor mount bracket removed. In that picture you can see the vinyl flooring-plywood-styrofoam-and finally more plywood. What you don't see is the welded aluminum framing of the floor itself. You can feel the aluminum framing if you step on your floor and notice spots that are firmer than others. Also, the trailer steel framing runs under the welded aluminum framing of the floor. Those were the only pictures that I took of the project. The trailer has propane gas lines that run down the right side of the Que and there was a fitting similar to a compressed air fitting you would find in a auto repair shop. Above that fitting was a decal on the side of the Que that said propane gas fitting. It is a quick connect or disconnect fitting that you can hook up a propane gas outdoor cooking grill, if you prefer to cook outside the Que. If your Que does not have that fitting, a hardware store should be able to provide the parts you need to connect one. I believe that the main propane gas line feeds the refrigerator in the rear of the Que, and you are basically tieing into that line. The best thing you can do to prevent water penitration is to chaulk all of your outside seams with Butyl caulk (roof takes another type of self leveling caulk) and inspect and caulk the black plastic wheel well skirts where other Que owners have found air gaps that allow water in, when towing in the rain. I really like our Que and I hope you like yours too.