Shower Waterproofing

Hi tile guys.

I guess I’m one of you but I’m more of a general builder than tile expert. I’ve done a good amount of tile jobs but they are usually connected to a larger project. I hope someone here is interested in my project enough to help me through it.

In this case I am putting an addition on my own house and have gotten to the wet room. It is roughed out at 91” x 100”. There will be a standing tub and shower with a glass entry and linear drain. It will also be heated with radiant floor heat.

I’ve consulted with a tile setter but I still have to do the plumbing and all parts ordering. He is just going to help me set everything (If he shows up).

I’m still trying to figure out which system to use for the linear drain as well as the drain for the tub itself. The linear drain will be along the shorter wall at the entrance which should finish out at 89”.  This leaves me with an awkward length. From what I can tell Infinity makes a customizable drain that can be adjusted for length. Can anyone recommend this system?  Is there another option?  I don’t see the Shluter system working for me with their limited length drains.

I’ve lots more questions but I thought I would start with the drain and move from there.

Any help is greatly appreciated. I am going to try to enclose some pics of what I have so far.

The wet room is in the left side of the new addition over the garage. The tub sits under the window and the linear drain is at the entry (represented by the 6 foot level on the floor).

Thanks in advance

Steve J