Ok, here’s a pic where I think water is leaking in. You can see on the right where there’s caulk, then it ends, im referring to the pic outside, on the side of the bed area, on the curve. The corresponding interior pic shows where there was a little water, maybe a tablespoon, along that seam. It’s on both sides, identical inside and out. Also, in other pic, the tape measure is where there was a little water underneath the first day I got it home. There’s been no more water there even though we’ve had rain almost daily. I’d like to put regular caulk on that outside seam after it dries out, if that’s the right thing to do.
The other pics are of behind the toilet, looking down at the crack between the vertical back wall and the horizontal floor, and the corresponding outside pic. The wall seems dry but I can push it, is that what you mean by mushy? I’m most concerned that this is allowing exhaust into the vehicle. When I test drove it for an hour, I got a slight sore throat and headache, which I attributed to what I thought was the chemical toilet smell, as I’m super sensitive to smells, chemicals, mold, etc. Ive been running a dehumidifier and ozone machine in it for the past week and it’s dryer and slightly less smelly. When I just started it and ran it for 10 minutes, I thought I could smell exhaust. So you can see my concern. If I could seal up the rear crack, maybe the exhaust smell would go away and I’d know what the problem was.
thanks for any insights