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Unread 07-18-2020, 10:50 AM   #31
cx
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Stop testing, Mark, that part's already been done by the manufacturer and their various independing testing labs. Time to start setting tile.

The bond testing for any A118.10 membrane (your Kerdi) is a shear bond test. No tiles have ever been recorded trying to peel themselves away from a direct bonded waterproofing membrane in the manner seen in your video. If your tiles tried to slide down the wall, creating a shear force between themselves and the membrane on the wall, the bond requirement would be a minimum of 50 psi. That would require a force of 200 pounds for each of those 2"x2" tiles you used. No way for us to tell how much peeling force you're using in your test, but it just doesn't matter at all. After only two days of curing, your mortar is not fully cured and you couldn't determine even your final (7-day) shear bond.

Take a deep breath. Commence setting tiles on your Kerdi. Do a good job. Never look back.

The Ditra-Set you have is the best un-modified thinset mortar I've encountered. I know it will set your tiles adequately if used correctly. Is good pookey. The MAPEI modified is probably also a good mortar, but I've never used it and can't testify. Schluter wants you should use the Ditra-Set. You get to decide which mortar makes you happy. Both will work. One will not give you a Schluter warranty. You don't care. Not at all. Any failure you have will be the result of installer error. Try not to make any.

My opinion; worth price charged.
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Unread 05-03-2021, 06:49 PM   #32
afonje78
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Hello Again!

I'm back with good news. I'm still working on my home bathroom remodel and have some pictures. I finished the shower area wall, laid down the entire floor with tile, and made the curb.

I want to stick a marble baseboard straight to painted drywall on the perimeter of the room. What strongest mortar or adhesive should I be using?
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Unread 05-03-2021, 07:23 PM   #33
Lazarus
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Versabond from HD will work just fine....
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Unread 05-04-2021, 05:18 PM   #34
afonje78
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I just checked and I have almost a bag left of the Mapei's mortar from Lowe's (Item #12949Model #10750136):

https://www.lowes.com/pd/MAPEI-Ceram...Mortar/3743805

Will this do the job? In the description it says I can install marble to
wallboard...
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Unread 05-04-2021, 05:29 PM   #35
Davy
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That's not the strongest but should work just fine for what you're needing.

How old is it?
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Unread 05-05-2021, 03:22 PM   #36
afonje78
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Davy,

It's about a year old.
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Unread 05-05-2021, 04:03 PM   #37
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Please discard that year-old mortar and buy some new mortar for your installation. What you have would be questionable even were it unopened.

Who designed the pattern for the curb top?

My opinion; worth price charged.
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Unread 05-08-2021, 11:08 AM   #38
afonje78
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cx,

My father and I plus the wet-tile saw from Diamondback. We didn't really put the design on paper we just made sure it looks good (at least to our eyes).

Here's the saw we're using. https://www.harborfreight.com/10-in-...ity-64684.html
Does it look good or bad?
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Unread 05-08-2021, 12:14 PM   #39
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I use the same saw in the 7" version. The blade is stiffer and it works great.
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