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Old 05-10-2008, 10:41 PM   #1
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deflecto and marble tile

Hi All;

I have a question regarding installing mosaic tiles in a bathroom.
The floor is 1.5x7" joists, 16" O/C, 10.5' span. Deflecto says ok for ceramic but not natural stone. I will be putting 5/8" ply over the planks/joists and 1/4" hardiebacker over that. The tile is a marble mosic, with components of 1x2" and .5x.5", about 3/8" thick. With such small components, am I ok with the installation, or do I still need to somehow beef up the floor?

Thanks for your help!
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Old 05-11-2008, 02:00 AM   #2
Brian in San Diego
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Stone is stone. I have never read anything that gets one "off the hook" if the size of the stone is smaller than a certain size. Perhaps the individual pieces of stone wouldn't crack but I bet the grout would.

If that doesn't work, I'll always think it should have.
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Old 05-11-2008, 09:54 AM   #3
John Bridge
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I NEVER disagree with Brian, but in this case I think the small pieces of stone are more like ceramic mosaics than anything else.
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