I believe plywood comes in off-fraction inch thicknesses, because it is actually manufactured to even millimeter thicknesses. Perhaps that is the case with this product, too.
Read the full replyI'm about to put some granite tiles down on my bathroom floor but it never occurred to me to look at the concrete backer boards more closely. I purchased 1/2" and it didn't look right so I took my tape and measured it somewhere between 1/4" and 1/2".
I know with wood, a 2x4 is less because it was planed down at the factory to the smaller finished dimension. But what's the excuse for concrete backer boards?
I believe plywood comes in off-fraction inch thicknesses, because it is actually manufactured to even millimeter thicknesses. Perhaps that is the case with this product, too.
To allow some room for a layer of thin-set tile mortar of course.
Jeff
I don't know what brand you bought.
Wonderboard by Custom is 1/4 " and 1/2". Usually stocked as 3x5. Durock by USG comes in 5/16, 1/2, 5/8. Usually stocked as 4x8.
It was 1/2" HardiBacker.
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