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Old 05-04-2008, 11:06 AM   #1
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Minimum Curb Height

Any general comments, recommendations on a minimum finished shower curb height above interior tile? 3'x3' shower and mud pan with glass door on second floor. Shower floor will be variable shape travertine, top of curb will be travertine, walls ceramic tile.
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Old 05-04-2008, 11:22 AM   #2
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a finished height of a few inches is good.
depends on how thick your mud floor is and how high you want to step in.
and along as you have a glass enclosure.
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Old 05-04-2008, 11:23 AM   #3
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Jones, the curb (finished height) needs to be at least 2-inches above the top of the drain. That will satisfiy national plumbing code. Incidently, 9-inches is the maximum curb height of the above the drain, again per code.
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Old 05-04-2008, 08:08 PM   #4
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A couple of inches sounds good. I am going with 1-1/2" thick mud pan at the drain. Thanks
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Old 05-04-2008, 08:13 PM   #5
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In your situation I'd go three 2x4's high. That should give you a finished height around 3 1/2" above the drain.
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Old 05-04-2008, 08:20 PM   #6
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I second the motion for (3) flat 2x4s. That's a nice easy height. Make sure to use regular kiln dried 2x4s and not plain pressure treated (too wet and too much shrinkage). If you are able to use kiln dried after treated wood, that's cool...but that material isn't redily available option for some.

Mike2, thanks for the national plumbing code specs. Last time I had a conversaion with an inspector, they said "nope, no code...do what you want".
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Old 05-05-2008, 07:54 AM   #7
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Just a note on codes. In reality "code" is what your local guy says it is.
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Old 05-05-2008, 10:17 AM   #8
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In cali its the norm to build a curb with 3 2x4's stacked. I think the critical
issues lie in your pan construction though. Proper pitch under the pan and
on the final shower floor are really paramount. I think the larger your shower
is, and how far away the curb placement will be, is also a factor. For example
if you build a shower with a shower head 8' away from the curb, the curb
is more or less useless unless there is a clog and it acts as a *dam* which
is still only a small safeguard providing you are there to turn the water off
before it overflows.
Jack Hamilton


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