It's hard to say if their repairs were correct because I don't know what the real problem was. Let's say it's a wet room. There is a continuous waterproof membrane on the subfloor, both in the shower and outside the shower. Then a mud bed. Then tile. That's a case where the thinset and mud bed under the shower tile can wet, and the moisture in the shower mud bed can "plume out" under the shower partition wall and wet the mud and eventually the grout and tile on the bathroom floor. A "possible solution" without demoing the shower wall would be to remove a several inches of tile on the bathroom floor side of the saddle along the entire length of the glass partition wall. Dig out the mud to expose the membrane. I'd even undermine the saddle along its full length by digging back the mud about 1/2" back along the length of the saddle. I'd want the exposed membrane to be clean. If the vertical wall of mud under the saddle was coarse and rough, I'd then patch that vertical wall of mud under the saddle to make it smooth. I'd want the underside of the marble saddle to be clean. I'd then use a waterproofing membrane to tie the exposed floor membrane to the underside of the saddle. I don't know what type of membrane you have, but it would have to be compatible with the floor membrane. If you can use a paint-on membrane like Hydroban or RedGard, paint it on the floor membrane, on the smoothed vertical wall of mud under the saddle, and onto the bottom of the saddle. That will connect your floor membrane to the bottom of the saddle. Any moisture in the shower floor mud will now be contained within the shower footprint. Now pack new mud in the excavated area outside the shower and re-tile. It's not a perfect solution, it might not even be the right solution because that may not be how your shower is built. But it's an idea of how I would consider making repairs were I the one doing so. The problem I have with them patching the area around the door is: If it was not the door leaking and it is a capillary thing going on down below, depending on how they detailed the added membrane when they made the repair by the door, they might have simply masked the presence of the moisture down below. ie, the moisture is still there. And more moisture is being added every time you shower. But by adding waterproofing on top of the wet area, they might just be sealing moisture into the bed. So the marble by the door may appear drier because it's above the new waterproofing, but the mud below the new waterproofing is still wet. If the area in front of the door where they made the repairs dries and the area to the left of the door where they made no repairs remains wet, that's an indication that what they did was a band-aid cover-up and not a true repair. Again, there could be several possible causes and several possible repairs because there are several ways to build a shower. I'm guessing and supposing. I'll be gone for a few days, good luck with it all!

Hi Creative Tile! Thanks for looking at this post. I have no pictures of this 5 year old bathroom being built, just those in my memory. I am however taking pics of the new Mstr bath being built for this very reason. This" possible" leak is in a guest bath we are currently using full time. The water is on the tile just out side of the door threshold. Not much maybe 2-3 tablespoons, but it is still there in the evening after wiping it up in the morning. Like slow seepage. Our contractor thinks it is from water splashing on the glass door and then running under glass door. Maybe so but why does it return later in the day when no one has been using that bathroom? I will try to post a pic, not really sure how to do it. Okay well it posted but sideways, sorry. You can see the wet grout lines and the scale that has developed on the floor tiles. Any ideas? Next steps? Thanks for any input.

Even if you could repair a malfunctioning jet or whatever you think is happening (confused on where the leak is) you have no idea what’s going on behind and under the tub. Your heavy tub could be sitting on a rotten, disintegrating sub floor. Your next bath might end up with bather in the basement.

Mystery solved. (See my earlier post for the steps I had already taken to try to get a plumber under the house without success.) I scheduled two crawl space inspectors offering different services, thinking the joists under the bathroom would have to be replaced. The first one said that he didn't see anything serious under the bathroom, and the joist looks fine, but they saw some standing water under the kitchen. he said he wasn't sure if there was a problem or if there had just been some heavy rain. So then I was able to call a different plumber and say "we have standing water under the house." I feel what happened next is an example of exemplary service and professionalism. Even though the old copper pipes had been replaced about 15 years ago, there was a cast iron pipe has had corroded that only handled grey water. (It's not clear why this would have been replaced 15 years ago also, but anyway....) A team of two came out a few days later, did the work in the morning, provided photos and then one of the plumbers said... "We also were under the bathroom and saw that you have a leak from your toilet, so we are going to fix that for free to make sure the job is done right." (He showed me photos from under the house which were similar to the ones I originally posted.) Now all fixes have been made as far as I I know. We have a second crawl space person coming in next week and we're going to keep that appointment. The earlier estimate pointed to other kinds of work that could be done under the house - not sure if we need it, but since one raised the idea we want to match opinions to find out if we have any other problems under the house. Thank you for your responses, they helped me to keep looking and not give up.