No one is answering you. I think it may be because your questions show that you have not researched how your shower should be made before writing this question.

I did a simple google search on shower slope and found this:

"To efficiently drain, the recommended minimum slope for a shower floor is about 4 percent, or a 1/2 inch drop per every 12 inches from the shower walls to the drain."

That is the same as the 1 inch over 2 feet that you are complaining about. I have no idea what you mean when you say, "it appears we have a step up no curb..." You also ask about doing a water test. To test if a shower is water-proof you do something called "Flood Testing," and it is done before the tile is laid.

Yes blubird you are correct. We step up into the shower and the floor slopes to the drain. I hired a proffesional GC with a very good reputation and they picked the plumber and tile installer. nancyinmich: I did not know I needed to be an expert on shower construction. I posed the question because as I said we specified as small a curb as possible. It looked like we had that until it was tiled. Then we realized there was really no curb and we began to worry about water seepage out the front of the shower curb through the mud base. I posted many pics on another thread and got some good input which led me to the question of the "Flood Testing" . I appreciate your responses. I would have taken this post down a few days ago but could not figure out how to do that. We are moving forward and will see what happens, everything in prep was done correctly and I did document in pictures. I just thought I would ask before all was grouted.

Glad you got your answers. I did not expect you to know about how to construct a shower, but your complaint about the slope sounded like that seemed wrong to you. If you were complaining about shower slope, looking up the slope seemed the first step.

Now that I have read Blubird's and your further comments, I see that your pictures are not showing the curb from inside the shower, but from outside. From this angle, now that I know to look for it, I see that there is a row of lighter colored,long narrow pieces of tile that may be quarter round or may just be flat pieces, and then the shower floor. Is this section at an angle, or flat with the top of the shower floor? If it is flat on the floor, then it is, indeed, as high as the curb, I am hoping that it is at an angle to give you a little bit of curb and some peace of mind.

I was not noticing the size of the tile under the rosin paper. It would have been a give away that this was the room floor. Now that you have explained it more, I understand.

Did the shower hold the water to your satisfaction? I imagine you are on a concrete slab and it was built this way for ease of construction. I have no idea if this is proper or not.

Curbless showers are done everyday now, and though they make some people nervous, others do like them. I am doing one, though mine will have a linear drain across the front so water should not escape.

As far as I know, once a post is up for a while, you can't erase it. About all you can do is put a comment in the comment section saying it was answered elsewhere.

"Curbless showers are done everyday now,"

Very true, but they are done by lowering a portion of the flooring system, typically not raising it. I can definitely see why you would be concerned with that setup.

Nancyinmich, We have not had a flood test. We are on a slab. The original shower had an 8 inch inside curb and 4 inch outside curb. They did remove concrete inside shower to lower the floor some and re position the drain. We were expecting the new curb to be 4 inches on the inside of shower and 2 on the outside. Not a step up of 2 inches then a slope to the drain. I did read about shower installation, slope and proper water proofing both before installation and after this possible problem. I have been on the bathroom site at Houzz as well as John Bridges. I was not complaining about my slope as I knew it was correct. The problem is the face front of the threshold, mud over hot mop then tile, no waterproofing beyond this on the bathroom floor and no curb to help hold water back. Tile, mud and grout will not hold water back, they are porus and can conduct the water to the adjacent floor grout lines and baseboards. That is why I posted. We are moving forward, if the shower fails we will bring in the tile expert who will provide an autopsy report to use with the GC. Thanks everyone.