new tile floor in bath

Old 05-05-04, 08:49 AM
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new tile floor in bath

I currently have a 2nd floor bathroom in a 1991 house that needs retiling. The current time is in good shape (no grout or tile cracking). It appears that the 4X4 tile is layed over a 1/4 inch plywood backer board. Is there an easy way of telling how thik the plywood subfloor is? I am thinking of putting down 12X12 or 16X16 tile using 1/4 inch durock or hardibacker. The floor currently seems solid and I would like to avoid raising it anymore. Any suggestions? The house is located in Illinois if that matters.
Old 05-05-04, 08:30 PM
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If there is a heat register in the room then pull the vent out and pry that boot away a little and you should be ale to see what they used for sub-floor

1/4" plywood is not a good substrate for tile if at all possible pull that out and use 1/2 durock and then tile it calls for a min. of 1 1/4 " subfloor for tile anyway so i would rahter do that than hope that the tile is going to be o.k. over the tile that is already down

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