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Unread 12-09-2017, 05:28 PM   #1
boulderz
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Jacuzzi to Shower Retro

Hi,
We are replacing a jacuzzi in a basement bathroom with a walk-in shower.

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I removed the tub, surround and wall tile:

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The plan is to install an approximate 3' wide vertical wall from floor to ceiling in front of the existing drain which will house the plumbing and shower. On either side of the wall will be a glass panel and the shower entrance will be far left in front of where the window is. The shower space is approximately 4' x 8.5'. Planning to keep the existing slate floor outside of the shower which has radiant heat (you can see a loop of the radiant that was under the tub).

I have some questions and am hoping to find some help here:

1. We are hoping to keep the existing black slate ledge and green/brown wall tile. As for the existing tile, I don't love it, don't hate it, just don't want to replace it if not necessary. Judging from what I have removed so far, the installation consists of a plastic sheet against the concrete, then cement board then the tile. The plastic sheeting runs to the floor. Planning to do cement board and hydroban below the black slate ledge. The ledge is 3-4' long pieces of black slate.

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I guess I'll leave it at that for now before I ask more questions!

Thanks,
Mike
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Unread 12-09-2017, 05:54 PM   #2
cx
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Welcome back, Mike.

I don't see any questions for us, but I've got a couple.

Quote:
Originally Posted by Mike
the installation consists of a plastic sheet against the concrete,
1. Your walls are poured concrete? All the way to the ceiling?

2. You think this plastic sheeting extends all the way to the top of your walls? Including behind the stone ledge?

3. To what do you think your existing wall tiles are bonded?

4. What type of shower receptor do you anticipate building?

5. The window will be in the wet area?

Let's start with that.
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Unread 12-09-2017, 08:38 PM   #3
boulderz
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Hi,
Whoops yes I forgot the punctuation. My question was do you think the green/brown tile and the slate ledge can remain or does it have to be removed.

To answer your questions:
1. Your walls are poured concrete? All the way to the ceiling?
Above the ledge is framed and below is poured concrete.

2. You think this plastic sheeting extends all the way to the top of your walls? Including behind the stone ledge?
Yes, I assume it does but don't know for sure. I can see that it goes behind the ledge.

3. To what do you think your existing wall tiles are bonded?
Looks to be durock or similar.

4. What type of shower receptor do you anticipate building?
Looking to do mud bed with tile over

5. The window will be in the wet area?
Yes, but off to the side. The whole shower is 8.5' wide so the window is off to the side. But inevitably it could get wet.

Thanks for your time.
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Unread 12-13-2017, 11:00 AM   #4
boulderz
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Does anyone know the requirements of embedding the radiant in the mud bed (this is over an insulated slab)?

Thanks
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Unread 12-14-2017, 10:55 AM   #5
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Mike,

You're talking about the coil that was under tub? A lot depends on what type of shower construction you use. I don't see that a shower pan would be practical. Some sort of surface membrane shower?
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Unread 12-15-2017, 09:06 AM   #6
boulderz
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Hi, yes trying to work out what to do with that loop. I'm not sure why they put it there unless it was thought it would warm the underside of the tub a bit and I guess it would.

I'm not sure what you mean by surface membrane but I'm thinking the way to do it would be:
1. Nail sleepers to the concrete and run pex between
2. Layer of CBU board over sleepers and pex
3. Mud bed/preslope over that
4. PVC liner or other?
5. Mud

Not necessarily ideal as I would have to put 2 unions in the pex to get the correct length and it would raise the height of the shower floor by about an inch.
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Unread 01-09-2019, 11:04 AM   #7
boulderz
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Back Again

Well about a year has gone by and other projects have taken precedence but now the shower is next in line..

I'm trying to work out some of the details so I can get started. The radiant loop visible where the tub was is the first issue. The loop is part of the radiant tubing which heats the rest of the bath floor. I assume they included the loop around the bottom of the tub for some heat under there. My plan is to extend the radiant under the shower area by cutting the loop out, installing sleepers on the floor with aluminum plates, new section of radiant tubing tied into the existing loop. On top of this would be cement backer board and then a mud bed. I'm wondering if this is a good plan or would there be any issues with it?
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