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Shower Waterproofing

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Kevin K
Paying Member

Practice Squad

My shower retirement project

Hello, I just finished demo’ing my bathroom as my retirement project. The shower is 75 wide x 65 deep and is a step down. It has 3 walls then a 1/2 wall with a glass door on each side to enter, and the liner only came up an 1inch on that 1/2 wall, so there was leakage. I removed the 1/2 wall and since its a step down from the main floor (concrete slab) I’m going to run the glass right onto the floor (pitch edge tiles into the base). The original shower has sand/liner/mortar/tile. Since there isn’t a liner to fit those dimensions, the original was short all around. I can graft two together, but not sure that is optimal (plan on 4-6 inch overlap) I haven’t found a prefab pan to fit either. What’s the best approach? Current Plan:

1. Preslope guides/pack mud

2. Add liner (2 grafted)

3. Easy pitch guide sticks then mud bed mix

4. Do I use redgard or aqua defense on the floor?

5. When I run the liner onto the main floor should I silicone it? The original barely came up the step in ] so water dripping as you exited the shower worked its way under the tile and down behind the liner so I want to prevent that.

6. Cement board the walls, then regard them.

Any help greatly appreciated.

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Isaac Ostrom
Isaac Ostrom
Jul 06, 2022

We have been using the new Hardibacker and it works well. As with any board, you just need to waterproof over the fasteners.

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