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View Poll Results: What trowel size and shape for Schuter Ditra?
1/4 x 3/16 v-notch 6 7.69%
Ditra trowel by Schluter 55 70.51%
1/4 x 1/4 square notch 18 23.08%
1/4 "U" notch 0 0%
Multiple Choice Poll. Voters: 78. You may not vote on this poll

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Unread 10-25-2011, 08:56 AM   #1
John Bridge
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Trowel size for Schluter Ditra

Schluter recommends that a 1/4 x 3/16 v-notch trowel be used when installing Ditra uncoupling mat. What is your trowel size preference? Please, everyone participate.

Last edited by John Bridge; 10-25-2011 at 09:11 AM.
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Unread 10-25-2011, 01:37 PM   #2
tilelayer
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that trowel is undersized
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Unread 10-25-2011, 02:13 PM   #3
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Interesting they say 1/4 X 3/16 (6 X 5mm) V notch when the Schluter Ditra trowel is 1/64 X 1/64 (4.5 X 4.5mm) square notch. So if the 1/4 X 3/16 is undersized as Rick said, the Schluter trowel is even smaller? Or does the square notch leave down more thinset than a V notch?
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Unread 10-25-2011, 03:20 PM   #4
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There is no way the recommend a 1/64" notched trowel.

I use a worn down 1/4"x1/4" and it works great for me.
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Unread 10-25-2011, 03:25 PM   #5
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Ditra trowel but Schluter of course.
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Unread 10-25-2011, 03:26 PM   #6
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Schluter Ditra trowel model TRL-DIT6 1/64X1/64 square notch.
http://www.schluter.com/7005.aspx Scroll down to bottom of page.
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Unread 10-25-2011, 03:37 PM   #7
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that is 11/64"x11/64" which is just shy of 3/16" and that is referring to their ditra trowel.

Their Kerdi trowel is smaller at 1/8"x1/8" which is equal to 8/64"
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Unread 10-25-2011, 03:39 PM   #8
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Ed,
That is 11/64ths, not 1/64th.

11/64 is somewhat larger than 1/8 (8/64) and somewhat smaller than 1/4 (16/64).

Comparable I'd say to a worn 1/4" square notch.

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Unread 10-25-2011, 03:40 PM   #9
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Ha Joe I beat you
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Unread 10-25-2011, 04:03 PM   #10
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Yea, you did. (But i included a picture)



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Unread 10-25-2011, 04:34 PM   #11
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Seasoned 1/4 X 1/4
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Unread 10-25-2011, 04:39 PM   #12
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I used a 1/4 by 1/4 before but found it left some bumps were there was too much thinset. Now that I have a ditra trowel there are no problems.
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Unread 10-25-2011, 05:22 PM   #13
tilelayer
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I use a ditra trowel but i posted in a thread that schluter recommended the 3/16th by 1/4" trowel and i pmed a mod and said i think this is wrong. Anyways i tried that notch on the last ditra install I did and got a bad bond so i switched to the ditra trowel. You gotta replace those schluter trowels too my kerdi trowel worn down and i started getting bad coverage so i switched to the marshalltown v notch.
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Unread 10-25-2011, 05:41 PM   #14
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I think it also has a great deal to do with the thirstiness of the substrate.
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Unread 10-25-2011, 06:01 PM   #15
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5/16th V-notch, I feel more comfortable with that size.
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