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Old 08-08-2009, 10:55 AM   #1
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1/2" or 1/4" Durock Cement Board?


I am currently getting ready to lay my cement board down (Durock) in the bathroom floor that I am remodeling. I was trying to save some time and not remove my door frames and just tile/cement board under them. However, on one side there is plent of room for me to use 1/2" Durock and tile, while on the other side it is a tight fit and I will most likley have to "squeeze" in the tile/cement board combined thickness. My question is, is it ok to use 1/4" Durock on the floor under my tile or do I have to use 1/2" Thanks for the help

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Old 08-08-2009, 11:06 AM   #2
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1/2" or 1/4" Durock Cement Board?


Durock 1/4" is made for floors. Either can be used on floors but only 1/2" can be used on walls.

Don't forget you MUST install the cement board in a bed of fresh thinset - ALL manufacturers require it.

You should also be undercutting you jambs and casings to accept the tuck of the cement board and the tile AND the two layers of thinset it will take to install all that stuff.

Undercut saws are cheap and can be found at all home centers.

Squeezing and forcing and pinching tiles will only lead to broken tiles in a short time.

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Old 08-08-2009, 12:38 PM   #3
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1/2" or 1/4" Durock Cement Board?


Bud, thanks for the quick reply. Great information, I will be returning the 1/2" to Lowes!
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Old 08-08-2009, 02:03 PM   #4
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1/2" or 1/4" Durock Cement Board?


To save a few dollars you can use unmodified thinset ($5-$8) under the cement board.
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