I have a 2015 Montana 3711FL 39' which recently developed a water issue.
I notice that the carpet which is next to the bed and shares the wall with the shower cabin is damp (see attached floorplan showing damp area).
I did a bit of detective work so far but haven't found the source - from the forums I see that possibilities are:
-Seal strip around slide out is leaking and water runs between outside and inside wall down to the floor
-Rubber seals around drain spout are bad and let water in
-Shower pan might be loose and leaking when someone stands in the shower
-Shower itself might not be properly caulked
-Shower handles/hose or toilet leaking and running behind wall
I plan on testing out running the shower with/without anyone inside to see if this is a cause - also monitoring after rain/snow compared to sunny weather to see if I have a leak up top.
My 5th wheel is stationary so I don't have the (easy) opportunity to tow it anywhere for service. If anyone has experienced a similar problem I would appreciate some advice or suggestions of where to look!