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Unread 03-24-2011, 08:32 PM   #1
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Join Date: Sep 2010
Posts: 37
Subfloor deflection for ceramic tile for 2X10 at 12"

Need to know what to do for ceramic tile installation... good framework is 2X10 at 12" o.c. with 1/2 plwood.. and has a span of 14 feet. Cannot do more than kerdi mat on top before 12 by 12 tiles. However I can access the basement and would like to add plywood in the bays from underneath. Thickness of ply??? The span is 14 feet but area of tile installation is only 4 feet from supported end. That is, I will have tile for 4 feet and 10 feet of 3/4 maple flooring. Is this feasible?
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