Designing Kitchens and Bathrooms - Shower pan

I am in the beginning part of creating a walk in shower. and have a shower pan question but will try and get a good description of what i am thinking first.

The room is 5' X 7', and was once a half bath off of the main bath. so all plumbing is near just needs a little rerouting, no big issue there. I intend on tiling the entire room as a shower. I know that tile itself does not ensure water proofing so i was thinking about the following process.

the entire room cement board, 1/4 for the walls and ceiling, and after a pre slope of the floor, 1/2 in on the floor.

I was going to tape and mortar the joints of the walls and I have some of the same compound used to seal foundation walls on the floor and corners so that they are sealed.

would this be sufficient or should i look at incorporating some sort of pan in this? and, other tan building an entire mortar pan how would this be suggested to be done?

any thing i can clarify please let me know.

Thank you for the time.

Hi!

I would use 1/2" CBU for the walls and 1/4" for the floor.

What are your plans for the sloped floor? You need two layers. 1st preslope, then liner, then final preslope. 1/4" of slope for every foot.

A mud pan is the only option I suggest seeing that Schluters presloped pans come max of 72"x72".

By far, the easiest methods would be either Kerdi or a liquid waterproofer. One the drain was centered, and you would need 2" ID pipe from the shower drain all the way to and including it's connection to the main stack, and with Kerdi, the preslope layer would be your only layer you would need. You don't use any cbu on the floor at all. 1/2" cbu on the walls with liquid waterproofing membranes and regular sheetrock walls with Kerdi. Laticrete's Hydroban will seal to the Kerdi drain giving you only the preslope layer. Depending upon the location of the shower head(s) you might be able to get away with Shluter's preformed 60x60 base and you could then build the last 2' out with mud. You'd have additional wall cuts at the base for the off centered slope but could be almost unnoticeable with larger format tiles.

I think you need to do a bit more research or post more specifically each step you plan.

I was going to tape and mortar the joints of the walls and I have some of the same compound used to seal foundation walls on the floor and corners so that they are sealed.

Whatever that is, it's not a part of a shower construction.

Thank you for fast responses, i will try to explain the steps i was thinking.


take the walls to the studs, blocking as necessary where needed.

sloping the floor, with mortar, then adding 1/2in cement board to that slope(i see that this willnto work now).
the drain would be centered in the floor with each wall sloping toward it.

(am researching kerdi and more on the pan)

is kerdi sold in the box stores? or in specialty stores?

the main concern since i have never built a pan or tiled a shower floor is to ensure water will not leak.

You are undertaking a large project. Kerdi is not usually sold in stores, but can be special ordered.

Kerdi is probably the best system out there.

I have located a few dealers not to far away, although not open on Sundays or this Monday due to the holiday i would imagine. but i think that is the way i will go, kerdi drain and membrane. Thanks for the assistance.