Originally Posted by AverageEverydayNormalGuy
During the walkthrough the better half did ask about the lack of sealant at the bottom and we were told it's that way by design. I honestly can't remember why. We are planning to take it in for other work however the soonest appointment is in 6 weeks and it's prime camping time. I guess we'll just have to avoid the shower until they can take a look at what's going on.
I waited until I could reply on my laptop before providing possible additional help, other than my 2 other Posts.
First, you get to make a choice, (1) wait 6 weeks for the dealer, or (2) do some troubleshooting yourself. In my trailer water leaks I chose #2. Let me say, I am an aircraft mechanic. When I was working my life was finding causes and applying corrective actions. Now that I'm retired and have owned 3 travel trailers, I'm doing more finding causes and applying corrective actions.
I'll assume you have a shower curtain (doesn't look like you have a glass enclosure), and that when using the shower the curtain is placed in such a manner that water is not getting around the curtain either on the sidewall or the shower base top. When I had my shower leaks I brought my trailer home (parked it in the street in front of my house), hooked up a water hose from my house, and took a shower like I would when camping. Even washed my hair! I had my wife stand outside the shower and look for leaks. When she spotted a leak I turned off the water and investigated. I saw where I thought from where the leaks were coming (I had more than one). I bought some GE Bath and Tile caulk (it's somewhat flexible). I caulked. I waited for the caulk to dry. Because I thought the leak was isolated to a certain area I tested by pouring a bottle of water around the area. Wait, what, still leaking! I asked the lead mechanic at a local dealer (not where I bought the trailer) for his opinion. He asked if I had caulked the seam between the sidewall and the shower pan. No I had not! He said water could be splashing up the seam, or the seam could be too wide (improperly installed sidewall and shower pan) so water is running down the sidewall and into the seam then out the sides. I went home and caulked all around the seam. Waited for caulk to dry and took another shower. Problem solved! That was my first trailer.
I bought my second trailer recently. Before I went camping, I brought the trailer home, and took a shower. Guess what, same leaks! So, being relatively smart, I caulked around the whole seam. Problem solved!
I believe the reason you were told not to caulk the seam is to allow for expansion and contraction between the sidewall and the shower base. Ok, good thought, however are you not going to ever use your shower! The reason I used flexible GE caulk is to allow for some possible and very minor expansion and contraction, if at all.
If you'd like to go camping, and take a shower while camping, try some troubleshooting. What have you got to lose!