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Unread 03-06-2014, 12:33 PM   #1
dward
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Master bath renovation; Shower and bath floor instal

Hi, been reading here off and on for a few weeks.

We are in the midst of redoing a master bath. The one piece fiberglass shower unit is gone and we extended the shower a bit. Size is approximately 32" x 60".

Plumber is currently performing the rough in, and will install a rubber Oatey liner after the tile guy sets the pan.

The tile guy wants to use a foam pre-stepped pan, a pan that has a slope for drainage.

I asked him what goes on top of the pan, he indicated the Oatey liner then some mortar mix, then Redgard on top of the mortar.

Question I have is about the Redgard on top of the mortar; Does this sound good to the Pros ?
Seems like to me that could create a moisture sandwich.

Should he just lay the tile on top of the mortar ?

I am not sure yet about what needs to go on the walls to tie in with the floor, what do you guys recommend ?

He mentioned using the Kerdi sheets on the walls.

Thanks
Dennis
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Unread 03-06-2014, 12:52 PM   #2
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I have used Redgard, and it is amazing. There are other companies that make a comparable product. This link is one of them. I'm putting it here, becasue the video is a really good overview of the process and should help you visualize the steps for installing a surface-applied waterproofing membrane.

This is not an endorsement, although Laticrete, as well as Custom Building Products (maker of Redgard), does support this site, I believe.

http://www.laticrete.com/contractors...uctid/146.aspx

However, no product will work correctly if it is not installed correctly.
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Unread 03-06-2014, 12:54 PM   #3
Richard Tunison
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Hi Dennis and welcome.

I would suggest using the Kerdi kit for the install. No deck mud necessary and tied to your kerdi walls it's a completely waterproof system.

They make one in your size.

http://www.homedepot.com/p/Schluter-...5yc1vZbza4Z7fo

If you are going to go with a traditional pan I'll put up a few things that are very important in that type of pan.

I would use a liquid on the walls installed to the correct thickness but not on the final mud bed. Water would not be able to migrate to the liner and then down the weep holes if the top is sealed off.

Make sure a correct mixture of 5 sand to 1 cement is used to make the deck mud. It is very strong but porous to let water pass through.

When notching for the liner,,,, notch ANYWHERE the liner will live, not just the wall studs. You want your backer board to be plumb and not bow out at the bottom riding over the liner.
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Unread 03-06-2014, 02:19 PM   #4
dward
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Thanks Gerry and Richard,

If I decide and go the Kerdi route.....is there a problem if my shower rough in dimensions aren't exactly 32x60 ?

I think it is like 33.5" x 59" if I recall correctly.

Thanks again
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Unread 03-06-2014, 02:28 PM   #5
jadnashua
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For those small deviations, you can extend the size with deckmud as if you were building it fully out of the stuff. It cuts easily with a sharp knife, so the slightly smaller dimension isn't enough to be an issue. But, you could probably easily adjust the width by adjusting the size of the curb. Should you buy their kit (it includes a foam curb), that is pretty wide. Some like it, some don't. There are lots of ways to make your own, but theirs is certainly fast.
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Unread 03-06-2014, 02:36 PM   #6
dward
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Thanks Jim,
The knee walls are already framed with 3 - 2x4s as the curb, I guess I could just use that instead of the Kerdi curb.

Thanks
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Unread 03-06-2014, 04:02 PM   #7
jadnashua
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If you keep the wood there, and you use Kerdi, you need to cover them with one of the approved materials (cbu, drywall, etc.) before you install the Kerdi...do not install Kerdi directly onto any wood.
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Unread 03-20-2014, 08:14 PM   #8
dward
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Spectralock Pro Premium epoxy grout with 1/16 joint? or Mapei Opticolor ?

Hello again,
Currently in the process of tiling a shower and trying to decide on an epoxy grout. Walls are 12"x12" porcelain and floor is 2"x2".

I am thinking of Spectralock Pro Premium epoxy.

The Spectralock website indicates:
Use of sanded grouts in joints less than 1/8” (3 mm) will result in
a coarser surface texture as compared to wider joints.

1- Does this mean I should not use this grout in 1/6" tile joints? or is it ok to use?

2- Would I be better of with the Mapei Opticolor ?
Their website indicates:
For joints 1/16 to 3/8

BTW, I am having a professional install the tile, but I want to make sure I use some of the best grout available.

Thanks
Dennis
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Unread 03-20-2014, 08:28 PM   #9
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Dennis,

1- Spectralock will work nicely in 1/16" joints

2- Never used the stuff myself. We do have a Mapei rep Dan the Man on the forum and they have tech support.
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Unread 03-20-2014, 09:16 PM   #10
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Dennis , I would say not to use the Spectralock Pro for 1/16 joint , but the Kerapoxy from Mapei.

And it is true , the larger the joints 1/8 or more , the better the Spectralock looks .
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Unread 03-20-2014, 11:19 PM   #11
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Welcome, Dennis.

It'll help if you'll keep all your project questions on one thread so folks can see what you're working on and what's been previously asked and answered. We can give it a more generic title any time you'd like to suggest one.
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Unread 03-21-2014, 07:10 AM   #12
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Opticolor or Kerapoxy would work fine for this application. You may also want to consider Kerapoxy CQ if you don't like the smooth look of traditional epoxy grouts. CQ has a coated quartz aggregate that is still good for 1/16" grout joints but gives the grout a more typical 'sanded' texture:

http://www.mapei.com/public/US/produ...y_CQ_EN_lr.pdf
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Unread 03-21-2014, 08:50 AM   #13
dward
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Thanks Dan,

Is the Kerapoxy CQ also good for bathroom floor with 1/8 joints ?

Thanks
Dennis
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Unread 03-21-2014, 09:07 AM   #14
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Dennis, the link our Mapei rep posted immediately above your question leads directly to the Data Sheet for the product and provides all the information you might need.
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Unread 03-24-2014, 07:35 PM   #15
dward
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To seal or not to seal (before grout)?

My tile is a through body type, unglazed porcelain.

I will be using Laticrete Premium Pro epoxy grout.

I understand the grout can be hard to get off.

1-Should I seal the tile before the grout ?
2-Should I use an impregnator ?

Thanks
Dennis
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