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durock directly to 2x8 t&g subfloor?
Hi All,
Bathroom project coming up. Part of it is to replace a wood parquet floor with ceramic tile. Parquet is 3/8" thick over 1/2 or 5/8" particle board over 2x8 T&G subflooring (nominally 1-5/8" thick). I'm concerned about achieving the same level on the new floor. Can I remove the particle underlayment and screw concrete backer board (Durock aka Hardi-backer, etc.) directly to the T&G subfloor? My instinct says it is stiff enough without additional plywood underlayment. If I have to put a plywood base on top of the T&G I have no hope of getting the tile floor to the same level as the current floor. TIA, Casey |
#2
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durock directly to 2x8 t&g subfloor?
"KS7J" wrote in message om... Hi All, Bathroom project coming up. Part of it is to replace a wood parquet floor with ceramic tile. Parquet is 3/8" thick over 1/2 or 5/8" particle board over 2x8 T&G subflooring (nominally 1-5/8" thick). I'm concerned about achieving the same level on the new floor. Can I remove the particle underlayment and screw concrete backer board (Durock aka Hardi-backer, etc.) directly to the T&G subfloor? My instinct says it is stiff enough without additional plywood underlayment. If I have to put a plywood base on top of the T&G I have no hope of getting the tile floor to the same level as the current floor. TIA, YES YOU CAN C.A. Casey |
#3
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durock directly to 2x8 t&g subfloor?
KS7J wrote:
Hi All, Bathroom project coming up. Part of it is to replace a wood parquet floor with ceramic tile. Parquet is 3/8" thick over 1/2 or 5/8" particle board over 2x8 T&G subflooring (nominally 1-5/8" thick). I'm concerned about achieving the same level on the new floor. Can I remove the particle underlayment and screw concrete backer board (Durock aka Hardi-backer, etc.) directly to the T&G subfloor? My instinct says it is stiff enough without additional plywood underlayment. If I have to put a plywood base on top of the T&G I have no hope of getting the tile floor to the same level as the current floor. TIA, Casey Read this: http://www.ttmac.com/deflection_limitations.htm And forget the screws on the underlayment. You can apply the underlayment over the T&G using tile mastic and 1-1/4" roofing nails. |
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durock directly to 2x8 t&g subfloor?
Tim Johnson wrote in message ...
KS7J wrote: Hi All, Bathroom project coming up. Part of it is to replace a wood parquet floor with ceramic tile. Parquet is 3/8" thick over 1/2 or 5/8" particle board over 2x8 T&G subflooring (nominally 1-5/8" thick). I'm concerned about achieving the same level on the new floor. Can I remove the particle underlayment and screw concrete backer board (Durock aka Hardi-backer, etc.) directly to the T&G subfloor? My instinct says it is stiff enough without additional plywood underlayment. If I have to put a plywood base on top of the T&G I have no hope of getting the tile floor to the same level as the current floor. TIA, Casey Read this: http://www.ttmac.com/deflection_limitations.htm And forget the screws on the underlayment. You can apply the underlayment over the T&G using tile mastic and 1-1/4" roofing nails. That raises a further question: I need a vapor barrier somewhere above the T&G subfloor, I would have put it directly on top of the T&G then put the Durock on top of that. Obviously, mastic is going to do no good on top of the vapor barrier. Does the Durock, taped, provide a vapor barrier? TIA, Casey |
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