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    coyotewaits4u's Avatar
    coyotewaits4u Posts: 1, Reputation: 1
    New Member

    Jan 7, 2009, 06:39 PM
    Converting a shower drain to a toilet drain
    How do I convert a shower drain in a basement to a toilet drain?
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert

    Jan 7, 2009, 07:58 PM
    Hi Coyotewaits4u...

    You really can't... :(

    A shower drain has a 2" drain. A toilet requires a 3" drain as a minimum!

    In this case, you will probably need to run pipes underground from existing toilet and pick up new toilet from there. Most likely the VENT will also be too small... 1.5" for shower and usually need 2" for toilet, but I know inspectors that will let 1.5" get by... ;)

    You may also be interested in investigating the SANIFLO above floor toilet pump systems... check out

    These will allow installation of toilet anywhere you want with only a 3/4" or 1" waste line to connect into main drain system... but be warned there are PLUSSES and MINUSES!!

    Let us know if need more...



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