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Old 08-01-2009, 11:59 AM   #1
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Thin set from HD or Lowes to use with Kerdi


Want to go buy any recommendations? Unmodified mortar correct? People in store look at me like an idiot

Laying over a plywood subfloor and a plywood bench.....with durarock on the walls... in the shower!


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Old 08-01-2009, 12:15 PM   #2
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Thin set from HD or Lowes to use with Kerdi


On wood you need Modified Thinset under the Ditra. Always use Unmodified on top of Ditra. Use Unmodified under Ditra when installing on concrete.

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Old 08-01-2009, 01:49 PM   #3
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Thin set from HD or Lowes to use with Kerdi


THOSE, are the recommendations. Not always the best advice just simply milktoast recommendations from Schluter.
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Old 08-02-2009, 12:58 AM   #4
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Thin set from HD or Lowes to use with Kerdi


We're talking Kerdi here not Ditra people.

"Laying over a plywood subfloor and a plywood bench."

Subfloor, what subfloor? You don't put Kerdi on a subfloor. No plywood bench in showers either, Kerdi does not go on plywood, put Durock on the bench then Kerdi.

What going on the shower floor?

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Old 08-02-2009, 07:15 AM   #5
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Thin set from HD or Lowes to use with Kerdi


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We're talking Kerdi here not Ditra people.

"Laying over a plywood subfloor and a plywood bench."

Subfloor, what subfloor? You don't put Kerdi on a subfloor. No plywood bench in showers either, Kerdi does not go on plywood, put Durock on the bench then Kerdi.

What going on the shower floor?



Jaz
Shower floor =plywood .... felt paper, mesh, mortar slope, kerdi, mortar, then tile? right/wrong?

Bench, Yes backer board, mortar, kerdi, mortar, then tile? right/wrong?


Just going to HD today, curious to what every is using from them with kerdi!

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Old 08-02-2009, 07:16 AM   #6
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Thin set from HD or Lowes to use with Kerdi


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On wood you need Modified Thinset under the Ditra. Always use Unmodified on top of Ditra. Use Unmodified under Ditra when installing on concrete.
Gotcha, same apply for the kerdi ?
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Old 08-02-2009, 11:04 AM   #7
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Thin set from HD or Lowes to use with Kerdi


Yes same applies for Kerdi. Go to Schluter's website. The full installation manual for the Kerdi shower system can be downloaded. You should read through it before continuing installation.
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Old 08-02-2009, 12:57 PM   #8
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Thin set from HD or Lowes to use with Kerdi


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Yes same applies for Kerdi. Go to Schluter's website. The full installation manual for the Kerdi shower system can be downloaded. You should read through it before continuing installation.

any particular brands recommended? at hd or lowes
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Old 08-02-2009, 01:50 PM   #9
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Thin set from HD or Lowes to use with Kerdi


Lowes used to carry Laticrete, and now I think they carry Mapei. Both are good. I haven't been in a Home Depot in years now.
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Old 08-02-2009, 02:18 PM   #10
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Thin set from HD or Lowes to use with Kerdi


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Lowes used to carry Laticrete, and now I think they carry Mapei. Both are good. I haven't been in a Home Depot in years now.

which mapei? there is like 7 types
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Old 08-02-2009, 03:11 PM   #11
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Thin set from HD or Lowes to use with Kerdi


Usually we use Kerabond as our unmodified. For modified you can use Kerabond + Keralastic Additive or UltraFlex II. You could also use Ultralite for a modified product if you like. 25lbs or Ultralite does the same thing as 50lbs of UltraFlex II or Kerabond.
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Old 08-02-2009, 08:49 PM   #12
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Thin set from HD or Lowes to use with Kerdi


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Originally Posted by poppameth View Post
Usually we use Kerabond as our unmodified. For modified you can use Kerabond + Keralastic Additive or UltraFlex II. You could also use Ultralite for a modified product if you like. 25lbs or Ultralite does the same thing as 50lbs of UltraFlex II or Kerabond.
they had eveyrthing but kerabond.

I seen ultra flex, but I like your idea of adding latex!

thanks for the info
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Old 08-03-2009, 05:56 AM   #13
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Thin set from HD or Lowes to use with Kerdi


UltraFlex is premodified. It uses a dried polymer that it activated when you add the water. Not as good as adding a liquid additive, but UltraFlex is still a modified thinset. If you want to do it by the book and use unmodified you may have to go to a real tile store to get the correct product.
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Old 08-03-2009, 08:35 PM   #14
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UltraFlex is premodified. It uses a dried polymer that it activated when you add the water. Not as good as adding a liquid additive, but UltraFlex is still a modified thinset. If you want to do it by the book and use unmodified you may have to go to a real tile store to get the correct product.

Makes sense thanks for the input!

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