1/8 vs 1/4 vs 1/2 hardiboard

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Old 10-18-08, 04:50 PM
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1/8 vs 1/4 vs 1/2 hardiboard

Does anyone know if there is a major difference between 1/8" or 1/4" or 1/2" hardiboard. I have not read any thing on the minimum thickness on the hardiboard but it seems like there has to be some difference.
 
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Old 10-18-08, 04:59 PM
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Hardie does not back a 1/8" backerboard.

They only make 1/4" and 1/2" (actually 7/16")

1/2" is used for walls and 1/4" for floors in most common applications.

You can use 1/2" on floor if you need some more height.
 
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Old 10-18-08, 10:37 PM
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So is it possible to use 1/4" on the wall? I am not tileing any walls but I am just wondering? I just don't see the need for the different thickness exept to make floors/walls level
 
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Old 10-19-08, 07:39 AM
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Hardie states you can use 1/4 for walls only if your studs are 16oc, but I never recommend it because the 1/4" has more "give" to it then the 1/2 which could lead to tiles/grout cracking if you lean up against the wall.
 
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Old 10-20-08, 07:52 AM
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Generally, 1/4" hardi is for floors. 1/2" hardi is for walls, as it is made for smooth transitions to 1/2" drywall. You can use 1/2" on a floor. Hardi says you can use 1/4" on walls, but I would never do that. Cement boards are not structural and do not make your floor stronger. If you need a stronger floor, an additional layer of plywood is what you should use.

Hardi does not come in 1/8".
 
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