[sonofcy]

Originally Posted by JRTJH

If you look at your photo of the shower drain, there's the shower pan, the drain and a black rubber gasket between the two. On most RV shower pans, the weight of an adult will push down on the shower pan causing it to flex. If there's any looseness between the drain and the shower pan, that flexing will allow the water to leak. You can run the shower all day and it'll never leak, stand in the shower, 2 minutes later, there's water on the floor.

How to fix it? Some (not all) shower pans have an access panel that you can remove from inside the bathroom. If you're lucky, you can work from above the floor. On the other hand, if your luck is like mine, you're going to need to "shinney under the floor" in the basement, once you finally get in there, you'll see a hole about 6" in diameter with the shower drain, HEPVO valve and the lower part of the shower drain fitting. You can remove the HEPVO valve (PAY ATTENTION TO HOW IT'S ORIENTED BECAUSE IT WON'T DRAIN IF YOU INTALL IT UPSIDE DOWN). Once the valve is removed, you can remove the drain fitting, clean it up, have someone in the bathroom clean up the top part of the drain fitting, reinstall it with some sealant on the black rubber gasket and then reassemble it (with the HEPVO valve properly positioned), let it dry overnight and hopefully you'll be "good to go".....

It took 2 hours for the water to show up but it leaks with nobody in the shower. Our old TT would have flexed but this Montana has a real one piece shower so no flex. No access panel. I will lay down a bead of goop where the seal is and see if that makes a difference. We are full timers and have been at our winter location for almost 2 months after more than a year at our friends place. This leak appeared out of nowhere, it is weird. I went and looked again and still can't see where the bathroom pipes come down. Tomorrow I will remove a panel on the other side to see what I can see.