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Unread 03-20-2010, 06:22 AM   #91
Bruce Johnson
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Thanks!

You can guess my surprise when I opened this post this morning and saw JB replied to my little note, no joke. Thank you very much for taking the time and posting. I do think that experiment is a very worth while endeavor, if only to make an grade list of sorts. I am going over Kerdi, of course, so my issue was no readily available non-mod around other than the basic, and that doesnt seem to be good to try.
Anyway thanks again made my day.
I will start a new post and post pictures on my accessible (easy approach) shower and tub replacement hopefully starting within two weeks.
Oh, I have bought and read both of your books and everthing else i could find...
Regards
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Unread 03-20-2010, 07:02 AM   #92
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Bruce, I should have added that I've been using VersaBond in Kerdi showers since 2002, right up until last month, when I retarred.
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Unread 03-20-2010, 08:35 AM   #93
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Quote:
Originally Posted by JB
right up until last month, when I retarred
Again???
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Unread 09-12-2010, 07:12 PM   #94
mtconley
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I'm from the "Shallow end" as you all would refer to it. But I think the testing idea is great and should be posted. If a manufacture has a problem with where they fall in an unofficial test have them make a better product. Or at least market the product correctly. As a fairly decent DIY'r I'm tired of having crap product recommended to me at big box stores. I would really love to see a rating sheet for specific uses.

I have a great idea for a test. Hang some 2" Kerdi-board on the ceiling of your shop. Hange 12x24 dense porcelain tiles using each product. Leave a few inches between each tile/thin-set test. After 24 hours use some hard hats and do the Krazy Glue test http://commercialsgonekrazy.com/videogallery.aspx . If the glue fails before the thin-set does I say you have a pretty good bond. If any of the tiles last more than one minute grab a fat friend on go to round two with a fat friend. Perhaps someone my size.
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Unread 09-12-2010, 07:50 PM   #95
cx
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Mike, all the thinset mortars carrying an ANSI rating have been well tested and many manufacturers like to emphasize the very high sheer bond ratings they've achieved.

But when bonding to many backing materials, such as waterproof membranes, the bond to the membrane is usually required to be no more than 50psi. That's still enough to park a small car on an 8x8 tile, and I just don't know a lotta people who try to park larger vehicles in places like that.

And doing any sort of bonding test with a tile as large as you suggest is neither practical nor necessary. Bond strength is bond strength and making the surface area is not gonna increase or decrease the bond per surface area covered.

The Europeans do have a pull bond test that's not used over here. I'm not familiar with just how it's done. Some folks in our Standards community want to see it used here, but I don't know where that stands.

For mine own part, 50psi of sheer bond is waaaaay more than anything I tile needs to withstand.

Your test design would also not yield much on accounta the Kerdi Board surface is gonna fail before even the cheapest thinset mortar in that sorta test, I'm willing to wager.
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Unread 09-12-2010, 08:43 PM   #96
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Yea, the test I recommend could make for some good youtube video.
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Unread 09-12-2010, 09:21 PM   #97
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Unread 09-13-2010, 07:22 AM   #98
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"have them make a better product" they all do -Its called MODIFIED.
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Unread 09-13-2010, 04:48 PM   #99
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Unread 09-13-2010, 05:37 PM   #100
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LOL @ Eric- WORD.

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