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Unread 02-26-2017, 02:25 PM   #1
John Bridge
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Durock Showers and Modified Mortar

Good news. As of now, modified thinset can be used with the Durock Shower System. This is a quote from USG:

"Effective immediately, tile setting mortars meeting one of the following standards:
ANSI A118.1, A118.4, or A118.15. are approved for use in the installation of Durock Shower System components and Durock Ultralight Foam Tile Backerboard. "
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Unread 02-26-2017, 02:49 PM   #2
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Thanks for the update.
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Unread 02-26-2017, 04:40 PM   #3
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This is a good thing.

There are those of us who have been trying to convince Schluter, and more recently USG, that some modified thinset mortars, 'specially the newer formulations, will work just fine with their waterproofing products. Glad somebody finally got USG's attention. I'll be curious to see how long it takes Schluter to follow suit.

Actually, I'm told that USG has been doing their own research and testing with many, many mortars before announcing this change. From my limited experience with that company, I'm not at all surprised to hear that. They've got a splendid R&D setup in Chicago and are known to test things to death before announcing a new product or method.

Good company. Good product.
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Unread 02-26-2017, 06:59 PM   #4
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Agreed CX.
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Unread 02-26-2017, 07:03 PM   #5
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Unread 02-27-2017, 05:44 AM   #6
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I stopped using Schluter products years ago because of the no modified issue. It allowed me to discover products that were as good if not better. I think Schluter has to realize they no longer own the market.
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Unread 02-28-2017, 08:12 AM   #7
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Yes, but . . . don't count Schluter out. They still lead that market.
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Unread 03-08-2017, 07:07 PM   #8
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That lead is shrinking though.
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Unread 05-24-2018, 10:08 AM   #9
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Modified medium bed mortar

I"m starting a new shower build and leaning toward using the Durock shower system including the water proof foam tile backer board.

I prefer to use a non sag modified medium bed mortar. Does anyone have experience using modified medium mortar with the Durock shower system?

Thanks
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Unread 05-25-2018, 06:33 PM   #10
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What...You mean the guys who make the thin set were right the whole time...?
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Unread 05-27-2018, 01:27 PM   #11
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You can do what you want, Steve.

Eric, I think all those years of you harping about it finally paid off.
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