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Unread 06-01-2011, 06:16 PM   #1
Tile what?
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Kerdi shower first time

Gearing up for Kerdi shower starting this weekend and need your help.
You guys help me with another stone project awhile back and I am so grateful.

I will be starting demo of a fiber insert with tile from the top of it to the ceiling this Sunday.I have read hours of material here and you guys are as good as it gets for the diy guys.

The shower will be as follows

1. durock over wood framed walls.
2. slab floor with mud bed and Kerdi drain.
3. Kerdi membrane over floors ,curb and walls.


I have a few questions the durock should it be place a 1/2 inch or so from the slab or touch the slab?

The curb will be solid house brick stacked with brick mortar 2-3 high and the bench will be cinder blocks 2 high.
Does the Kerdi membrane apply directly to these materials with unmodified thinset?

Thanks for your help
Todd
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Unread 06-01-2011, 06:33 PM   #2
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Quote:
I have a few questions the durock should it be place a 1/2 inch or so from the slab or touch the slab?
I set mine to the floor since the mud is locking it in and the waterproofing is on the surface. it doesnt matter.

Quote:
The curb will be solid house brick stacked with brick mortar 2-3 high and the bench will be cinder blocks 2 high.
Does the Kerdi membrane apply directly to these materials with unmodified thinset?
yes
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Unread 06-01-2011, 06:44 PM   #3
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Your shower will be cheaper and easier to build if you abandon the CBU and use drywall. You can do the same for the bench, just frame it up and wrap it in drywall, then cover it with kerdi.

If your curb is going down over a slab, then the bricks are the best choice. However if it's going down over a wood subfloor, you can use 2x4's and drywall.
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Unread 06-01-2011, 09:04 PM   #4
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Hi Todd, what Kevin said. I have done lotsa Kerdi showers with no problems and never used CBU.
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Unread 06-02-2011, 07:49 AM   #5
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Thanks guys

I have this mental block about using Drywall in a area like this.
Maybe it is the lack of confidents in myself being that good.

How far from the floor should my last screws be placed in the durock?

It is on a slab and my concern with the durock going to the floor is water weeping up the wall from the slab.

Todd
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Unread 06-02-2011, 08:48 AM   #6
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Todd,

Since you are using kerdi, you can blast screws in anywhere. They all get waterproofed. Isn't that cool?
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Unread 06-02-2011, 05:49 PM   #7
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...and Kerdi is like God over even "drywall." (That's the beauty of it!)
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Unread 06-02-2011, 06:07 PM   #8
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I glad I decided to spend the extra for the Kerdi and join this forum.

I checked at lowes and Home depot today and neither had 80lb bags of sand topping mix they only had 60lbs.

So how much sand would I add to 60lb to get the correct ratio for mud bed?

Thank
Todd
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Unread 06-02-2011, 08:35 PM   #9
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From the Liberry.

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Unread 06-03-2011, 07:54 AM   #10
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Thanks Dana

I will have to find a scale to use I suppose as this is the only way to get it exact.

Any suggestions for demoing the exsiting fiber glass insert?
It goes up to about 6 ft high and then 4x4 tiles to the ceiling.My plans are to cut the sheetrock about 1.5 inches from the edge to access the point it is nail to the studs. Then remove the tile and cut the unit into peices.

The shower is about 14 years old but the external plumbing fixtures have been replaced about a year ago and we will reuse those.
Is there anything I should replace when I have access to the internal wall plumbing?
I do have access from the backside via sheetrock wall in the bed room if something goes wrong after the tile.

Thanks
Todd
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Unread 06-03-2011, 01:12 PM   #11
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Todd,

Take pic of that plumbing and let us take a look at it before closing the walls. A new faucet is the norm, along with raising the shower head. Got cut off valves?
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Unread 06-03-2011, 05:08 PM   #12
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Thanks Paul I will do that.

DUROCK Next Gen 1/2 in. x 4 ft. x 8 ft. Cement Board
Will this work with the Kerdi?
It will save me some money because the sheets are bigger and I assume I can hang it vertically.

Thanks
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Unread 06-03-2011, 08:38 PM   #13
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That will work, but drywall is even cheaper and it's recommended by Schluter.
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Unread 06-04-2011, 11:57 AM   #14
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Well just got through with demo and took some pics .
The last pic is a leak I found other than a new piece around the top of the pipe on the roof any suggestions?

The plumbing itself appears to be leak free.
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Unread 06-04-2011, 12:59 PM   #15
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Check the roof jack and flashing around that pipe where it meets the roof. I think the seal has gone.
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