To do what he's proposing, you cannot have a "bowl" mud slope. Take a rectangle and draw two lines from corner to corner. The resultant triangles will have to be completely flat planes that slope towards the center point where the two lines intersect (your drain). Your shower floor will have that X in it in grout from the cut tiles. This is MUCH MUCH harder to do than a bowl preslope, as it has to be sloped correctly and perfectly flat, and the intersecting X lines can be difficult to achieve uniformly for a novice. It CAN look great when done by a pro, but it can also be a slippery uneven nightmare if done by a hack who can't get it level and with tile that isn't rough enough to give your feet grip on a wet surface.

I have been watching your posts, too, waiting to see the shower done. Yay! Very modern-looking tiles! Is that a porcelain version of diamond plate? Very nice. I am still doing my planning. We are not ready to start buying yet. We are getting quite close, though. I have a concern about the linear drains that I do not see addressed anywhere. I am hoping that as you start to use your drain in the next few weeks, or as Lori starts using hers in the months ahead, the problem will come up. It has to do with hair. I lose a lot of hair each shampoo. I used to have a mesh bubble with a metal rim that went over the drain, but I would be ankle deep in water before my shower was over. Now I have a Lint Trapper, made for a laundry tub, stuck in the drain. It catches the hair, which tends to stay low, and the water can still go over the top and drain. I pull the hair off after every shower. The slots in all of the linear drain covers I have seen look like the hair could slide right down and go into the trough. From there, it is downhill into the actual drain. How does one stop the hair?

My goodness. This thread has gone off the deep end. First of all, simultaneous water sources are not allowed in CA. One at a time only. And even if I could, I wouldn't. I conserve water at every opportunity. I know that until very recently Texas was in a severe drought so I hope you only recently started wasting water with "SUPER long" showers and multiple water sources. These days this kind of behavior is frowned upon in much of the country even when there isn't a drought condition. None of the surfaces in the renderings are true. I said the colors are "generic" meaning don't pay attention to any of that. Maybe that wasn't clear but there is no wood in the bathroom so it's not a concern. As for completely undoable, you guys have lost your minds in terms of the drainage needed. There is one showerhead with a full four foot long linear drain under it. And for the next four feet away from the drain there is a downward slope aimed at that drain at 1/2" per foot for a total of 2" rise. The entrance to the shower is another good foot or two away from where the slope even begins. There is no way water from a low flow showerhead is going to travel four feet uphill, then traverse another foot or two of flatland and then follow that by making a sharp right turn to exit the shower. Not. Going. To. Happen. At least not on the planet Earth. I don't need two drains. I was not questioning if the shower design was OK. I was questioning whether or not a certain type of linear drain could be used in this design because the manufacturer's verbiage was unclear. I have spoken to Quickdrain and they assured me that the TileIn drain and WallDrain will be fine with this design. And these are their least capable linear drains. I suppose there is a question about whether or not code requires the entire floor surface to be sloped but the people working on my house have done curbless showers (one guy was brought in specifically to do the shower floor and drain because he is a curbless specialist) and they don't see an issue. I will still ask my inspector when I see him to be sure. I might actually prefer the entire surface to slope back towards the wall and away from the door just so that the floor of the shower is seamless. I hadn't considered that option but if I do it, it would be for aesthetic reasons not because what I have will not contain the water.

Ginger- It's easier to clean than a regular drain since you don't have to unscrew anything. About once a year I lift the whole thing out of the tray, wipe up hair and glop that has accumulated with a paper towel, and set the drain back in place. The one I have is heavy as it has tile laid in it, but if you get a cover that is all stainless steel it is easier to lift. All these drains are essentially the same: a stainless steel tray that is set into the floor, and a cover, either stainless or inlaid tile type, that fits in it. You get the cover out by slipping a wire hook into one end of the drain, and hooking it into a hidden hole...then you simply pull up and it lifts out. Most drains come with a metal or plastic implement to do this, but I made my own because I wanted something more heavy duty for my heavy cover. I just took a piece of coat hanger wire and put a 90 degree bend on one end and a loop on the other end to provide a grip. Took me about two minutes to make: