Large tile installation

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  #1  
Old 07-19-12, 03:33 PM
J
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Question Large tile installation

I found some 18x18 porcelain from my-nards that I like for the kitchen and laundry. All the subfloor is done with mapei ultraflex 1 mortar bed and hardie board and the joints are all taped and finished with the same thinset. I wondering if I should use a different mortar for the large tile or if I will need an additive to the same mortar I have? Anything else you think I should know would be great also. Thanks a lot.
 
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Old 07-19-12, 06:44 PM
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No, that morter already is modified and has Polymers in the mix. Make shore you backbutter every tile.
 
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Old 07-19-12, 07:06 PM
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You should look for a modified thinset that is made for use under large format tile. TEC has 3N1 and Laticrete has LFT (I believe). There are other manufacturers but I am not up on their marketing names
 
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Old 07-19-12, 07:46 PM
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I'd lay these tiles out dry first and see how they look - that's a pretty big tile, maybe too big if the rooms are not
 
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Old 07-20-12, 05:06 AM
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What tileguybob said. I like the Tec 3N1 also.
 
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Old 07-20-12, 09:56 AM
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Wink

yeah they are large, but the area is large and open. The Mapei ultrflex 1 is polymerized like Isola mentioned. I was a bit concerned about mixing products of manufacturers, like using mapei ultraflex 1 to finish the joint and then using mapei LFT or another product on top of the already finished joints. Id be happy with using the UF1 and backbuttering also. Thanks for the input.
 
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Old 07-20-12, 03:07 PM
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Yeah if you already have enough mapie flex to lay and set the tiles with then use that will work for you. But it's silly to buy something different when you already have the correct stuff.
 
 

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