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Unread 01-17-2007, 08:39 AM   #1
masterbath
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Shower Pan, Kerdi, Drain questions

I am knee deep in a masterbath remodeling. Currently down to studs and working my way back. One issue I have to address soon is my shower pan. As I ripped it out (always kinda had knew this) I found that the shower pan was basically jacked out of the slab. So the pan is recessed about 3 inches below the floor line. I tore out my curb - really didnt want it and I had to get behind it to resolve Sole Plate issues on the walls. Anyways, I am torn between doing tile or a shower pan (walls will be 12x12 marble). I would prefer tile because I believe then I can leave the curb off. I also have questions with my drain. I was told that if I tile, I dont need to do much work to the drain but if I put a pan in I need to rip it out down below the slab and install a new one (height issues on drain). Will this be the same issue if I use the Schluter System? As soon as I saw this product on DIY, I was very interested in it. I really don't feel like jacking up the slab but I will if I have too. I am attaching pictures. You will see a "patch" next to the drain - where I was trying to figure out what the h@#$ I had on my hands. I was perplexed because when I pulled up the tile I didnt find this bed of mortar I expected. It was basically thinset or whatever direct to the slab. This pan was in very good condition - no leaks when I started. My wall was the issue along with termintes and carpenter ants. They are what prompted this project.

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Master. or scott..
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Unread 01-17-2007, 09:29 AM   #2
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Hi Scott, Welcome aboard.

Looks like you have a recessed slab in the shower area. You'll need to get all the mortar and pan material out of there and get right down to the concrete below it. At most you'll have to chip out around the drain pipe to install either a Kerdi-drain or a plastic receptor. If you go with the plastic receptor you can leave all the mortar in there and just did the drain out do you can convert to the new drain.
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Unread 01-17-2007, 09:36 AM   #3
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Thanks,
Is this kind of scenario covered in your book?
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Unread 01-17-2007, 09:39 AM   #4
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Shower floors are certainly covered. There is nothing special about a recessed one.
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Unread 01-18-2007, 12:08 PM   #5
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question. I cut the drain insert out with a sawzall and now have a pvc with a thread. would the kerdi drain screw into this? Sorry, I am still a little confused on what/how they tie in.
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Unread 01-20-2007, 01:04 PM   #6
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I am still struggling with this pan. I got to thinking about dimensions a bit and wonder if it is too shallow. I looked at the Kerdi Shower pan and it says it is 1 1/2" at the perimeter. My cutout in my slab is about 2 5/8" deep. My tile are 3/8" thick. With the prep, shower pan, tile and bedding to mount with I think I will only have about 1/2" left to the lip of the pan. This would require me to cut tiles about 3/4" that would cover the side wall where the lip of the pan meets my floor. Is this too small? Am I overthinking it?
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Unread 01-20-2007, 01:47 PM   #7
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Scott, I would go with a mud floor. That way you can set the Kerdi-drain almost right down on the slab and work upward from there. You can do that with a concrete subfloor because you can bond the mortar to the concrete. It doesn't have to be thick.

The other thing you can do is set the drain a little higher and have the shower floor come out even with the bath floor. At 1/4 in. per running foot, you'll need about a half-inch overall on a floor that size. Doing a Kerdi mud floor over concrete IS covered in The Kerdi Shower Book.
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Unread 01-20-2007, 02:12 PM   #8
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Thanks John. I am going to get the book. Do you still put down the kerdi material on the floor? I am still not sure how I tie into my existing drain since I cannot tell what the fitting is on the kerdi drain.

Maybe I will find that in the book. Off to buy!
Scott
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Unread 01-20-2007, 02:50 PM   #9
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The Kerdi-drain just glues onto a 2-in. plastic pipe. You can order PVC or ABS. Looks like you have PVC. You will need to chop down far enough to remove the threaded part and get to straight pipe. If it is then too short you can add a piece with a straight coupling. You can find rough-in diagrams for the Kerdi-drain in our Liberry.
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Unread 01-21-2007, 09:25 AM   #10
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Thanks John.
Last night I was looking on a website you had linked to which sells the Schluter product (cant find the link now) and since I don't need to get the pan I was looking at just the paper and the drain. The 5' wide roll only was listed for like 95' long. I obviously don't need that much. Do they not sell it any shorter lengths?

I got your book and have read through some of it. Good stuff. It made me change my plans on my tub surround since it was going to double as the knee wall (tight squeeze). Instead of doing 2x4s there, I am going to use brick/mortar.
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Unread 01-21-2007, 10:00 AM   #11
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Hi Scott, here is where you can get what you need for Kerdi. They will take care of your needs.
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Unread 01-21-2007, 11:56 AM   #12
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Thanks Mike. That was the place. I will bookmark it this time. Although I now realize that the one I was looking at was 5" width, not 5'. I can only find rolls on this site that are 5". I guess I can email them.

thanks again.
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Unread 01-22-2007, 01:17 PM   #13
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I found no email on the site. I called and got a recording that they are busy. I am just trying to find out what sizes I can get this in. Widths specifically. Everything on his site shows 5".

I am just for answers while I around here.

Hope I aint 'n you too bad....
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Unread 01-22-2007, 04:15 PM   #14
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Smile Kerdi

Hi,

You need to look for Kerdi on their site, no Kerdi Band. It comes in rolls also but is 39 inches wide. Kerdi Band is what you use around he edges between wall and floor, hence the 5" width. I just did my shower based on John's book. I also had a recessed floor and as John suggested brought it even with the bathroom floor. Looks great! Good luck!
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Unread 01-22-2007, 06:02 PM   #15
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ok so that is raising my shower pan about 2"? sounds good but is that a lot of mortar to lay in there? it would probably solve my next issue i was getting ready to post. when they dug this out, they left about 1 1/2" recessed from the wall. they double stacked sheetrock to cover the difference in the pan and the wall. so if I level this out I will actually be creating a larger shower area. or I can gain a much needed inch on the other side where my tub is going to be shoehorned in. sound ok?

guess i need to go back and finish reading the book.
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