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    shmeel's Avatar
    shmeel Posts: 3, Reputation: 1
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    #1

    Mar 11, 2011, 05:11 AM
    How high does a sink drain have to be off the floor on roughing?
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
    		  
    #2

    Mar 11, 2011, 06:04 AM

    Hi Shmeel...

    If a lavatory sink (bathroom) then 18" is standard in my area.

    If a pedestal sink (bathroom) then 20" is standard in my area.

    If a kitchen sink then 15" is appropriate to accommodate a disposal.

    More questions? Let us know, OK?

    Mark
    shmeel's Avatar
    shmeel Posts: 3, Reputation: 1
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    #3

    Mar 11, 2011, 01:50 PM
    Thanks mark sory that didn't spesfy but I needed all 3 so thanks
    shmeel's Avatar
    shmeel Posts: 3, Reputation: 1
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    #4

    Mar 11, 2011, 01:52 PM
    Comment on massplumber2008's post
    Sory that I didn't spesfy but I needed all 3 so thanks
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
    		  
    #5

    Mar 11, 2011, 04:56 PM

    Yep, we rough in the same around here. However, it is always best to know exactly what sink (especially bathroom sink) you are going to have. I have roughed in b.s at 18 only to find the homeowner decided to get a fancy vanity cabinet with drawers on the bottom, or a shelf in the middle, or extra long legs, etc. This, many times, will cause problems with fitment of p-trap, and you have to either cut into the wall to repipe, or cut up the cabinet to make it work. Like I said, best to know exactly what sink you will be using and get a rough in sheet for it. This way you will avoid a real headache. That being said, if you are just going with standard fixutes and cabinets, all Marks rough dimensions are dead on.
    Milo Dolezal's Avatar
    Milo Dolezal Posts: 7,192, Reputation: 523
    Plumbing Expert
    		  
    #6

    Mar 11, 2011, 08:32 PM

    I would like to add... for kitchen sink rough-in: If you plan on installing deep sink, like 10", then you want to rough it drain inlet even lower so the trap barely clears bottom of the cabinet.
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