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Unread 03-01-2022, 09:35 PM   #31
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Originally Posted by Ity
4273 "4237 Latex Additive is a specially designed latex additive for use with 211 Powder to make high strength latex thin-set... 254 Platinum is an approved substitute for 211 Powder mixed with 4237 Latex Additive"

In the last instance, Laticrete makes it clear that 4237 combined with 211 (an unmodifed thinset) is an approved equivalent to 254 Platinum.
Ity, I would submit that conclusion is not correct. Laticrete indicates that 254 is an equivalent to 211 with 4237, not necessarily the inverse.

I've no idea what might happen were you to mix 4237 with 254 Platinum. I suspect even Laticrete has not tried that combination, but you could certainly ask.

My question would be, "Why would you want to do that?"

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Unread 03-01-2022, 10:02 PM   #32
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CX, I get your point on the inverse order of equivalency, because how you said it is indeed how Laticrete writes it... "254 Platinum is an approved substitute for 211 Powder mixed with 4237 Latex Additive".

I took algebraic license... if A = B, then B = A.

If 3 = 1+2, then 1+2 = 3.

But judging by the sheer number of different admixes, the curing chemistry is likely more complicated.

As for my "wants", it isn't that I want to necessarily do that, as much as I want to better understand if there was ever a case or reason to do it, and if it has ever been done.

Where "it" is adding an admix to a modified thinset, and in particular a modified thinset already approved for use in a broad number of applications.
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Unread 03-04-2022, 09:37 AM   #33
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Kerabond/Keralastic is Old School. I have used it for over 30 years. You will never find a better thinset IMHO. I have done things on my homes over the years outside in freeze/thaw that weren't quite by the book. Still holding up to this day.
With the addition of Kerabond T some excellent thick bed material for exteriors.

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