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Unread 11-16-2007, 06:52 PM   #1
Dave U.K.
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half timber,,/ half concrete.

hi guy's

i have a floor to tile half timber / half concrete..

what do i need to take into consideration regarding adhesive & grout and tile type..should i install an expansion joint.. longest run is 7 mtrs.. mixed substrate..???

cheers..
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Unread 11-16-2007, 07:11 PM   #2
ceramictec
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without knowing much about your floor. you can take a look at Schluter Kerdi.
as long as both your substrates are flat to each other this might work.
they have types of expansion joints too.
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Unread 11-16-2007, 07:15 PM   #3
Dave U.K.
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can kerdi deal with substrate movement..as well as defelction in timber..what about where the substrates meet..what do i do here..??
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Unread 11-16-2007, 07:20 PM   #4
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Dave, you have there what I would call a construction joint over two dissimilar floors. I know of no way to safely avoid placing an expansion (movement) joint above that transition zone.

A crack isolation membrane would allow you to bridge it with tile. However, a soft joint would still be required, just shifted off to the sides somewhat.

Lets see what others have to say. I think opinions on this are going to differ somewhat.
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