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09-17-2003, 06:31 AM
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#1
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Registered User
Join Date: Jul 2001
Location: Southeast U.S.A.
Posts: 4,103
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TCA testing
Please explain something.
The TCA can give 1/4" Denscrap a rating over 5/8 ext plywood on 16 o.c joists. How come it doesn't recognize, SLC or 1/2" mortar bed with pure latex. Surely 1/2 mud bed with latex will out perform Denscrap. Or for that much, what about the performance of SLC v.s Denscrap? 
John K
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09-17-2003, 07:33 AM
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#2
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Registered User
Join Date: Jan 2003
Location: mi.
Posts: 4,887
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Someone would have to submit it and pay for the testing.Once tested the data would go before the handbook committee and be approved by a majority.Why its not in is, that it either dosnt pass the test(robinson astm-c627) or ........
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09-17-2003, 12:30 PM
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#3
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Tile Contractor
Join Date: Jan 2003
Location: Bridgton, Maine
Posts: 8,631
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I would be willing to bet, that atleast until covered, the denshield would outperform either one, only because of the outer skin on either side. Once covered, I have a feeling that ANY mortar would outlast denshield. The trick is getting it covered without breaking it up as you're setting over the top of it, atleast in the case of the latex fortified mud, anyway.
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09-17-2003, 03:22 PM
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#4
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da Man!
Join Date: May 2001
Location: Racine, WI.
Posts: 5,596
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It is kinda like Eric said, somebody would have to ask and be willing to pay for the test. Testing has shown that 3/4" of sand and cement is pretty much it. Adding latex to 1/2", maybe, so it would be up to a latex guy to propose it and pay for it unless a committee proposed it. Having it pass the test and becoming an industry accepted method are two different things. In general, not only must it pass the test but also have 5 years of field performance before even being brought to committee. I for one would be negative on SLC till someone would answer the questions I posted on the other thread. Of course, I voted against ply over OSB and it still passed. Majority rules.
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09-17-2003, 06:15 PM
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#5
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Registered User
Join Date: Jul 2001
Location: Southeast U.S.A.
Posts: 4,103
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Dave.
If a system needs five years field testing. Does that mean the people who are receiving the field tested system, are basically
guinea pigs?
So if I say a latex modified 1/2" mud bed is my new system. Then I just start using it and see how it performs?
John K
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09-17-2003, 06:36 PM
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#6
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Tile Contractor
Join Date: Jan 2003
Location: Bridgton, Maine
Posts: 8,631
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It has to be tested, first, to make sure it works. Then, in a manner of speaking, yes-- they become guinea pigs to test the longevity of the method.
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09-19-2003, 05:57 AM
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#7
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Registered User
Join Date: Jul 2001
Location: Southeast U.S.A.
Posts: 4,103
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Dave or anyone.
How much does the testing cost?
John K
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09-19-2003, 06:17 AM
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#8
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Official Felker Fanatic
Join Date: Jun 2002
Location: Northern MN
Posts: 14,398
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You mean including fixing any failures and sending Dave and or 1 of his team out to determine exactly why it failed?He doesnt ride his harley to work you know, he flies.  Hows your frequent flyer miles doing there Dave? 
__________________
TIP YOUR TILE MAN, His Retirement plan is not nearly as lucrative as yours and his waning years will be far more painful to boot.
He gives much so you can have a Beautiful Home!!
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09-19-2003, 08:41 AM
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#9
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Registered User
Join Date: Jan 2003
Location: mi.
Posts: 4,887
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It all depends what all you want to test. A Robinson test is $1500.00-$2000.00
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