Old plumbing - Do I need to update for toilet?

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by Notahandyman, Jul 25, 2007.

  1. Notahandyman

    Notahandyman New Member

    Jul 25, 2007

    I'm new to your forum, but I'm hoping someone can answer a few questions for me.

    My plumbing is from 1977 & the contractors that did the plumbing did a hellacious job of plumbing - cutting & gluing, rather than using threaded pipes in the walls & we're now beginning to replace, sink, tub, toilet, etc. & we're running into some tough problems. We've finally gotten the sink installed despite the awful plumbing, & next is the toilet....but I'm worried!

    Has the basic dimensions or drain hole distance changed since the '70's? I believe our existing toilet is an American Standard, not elongated, but I'm not sure. It's whatever they put in new houses in the 70's. I know it's one that uses a huge amount of water...not one of the low water usage ones.

    We're wanting to go with Toto or Gerber (more on Gerber in another post). I want something that will flush efficiently the FIRST time & be fairly quiet about it too! I am having a tough time deciding which brand & which feature I need, but the biggest question is definitely the plumbing.

    If anyone knows the issues I might be up against replacing this old toilet, please help me out.

  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Sep 2, 2004
    Retired Systems engineer for defense industry.
    New England
    The first thing to check is the distance from the finished wall (not the baseboard) to the mounting bolts on the toilet. That is your rough-in dimmension. If you are lucky, it is 12". If it is much different than that, you may need to pick up a non-standard toilet. Nearly all of the ones you find in the store are designed for 12".

    If your plumbing is vented properly and the current toilet flushes without clogging up, then a well-designed, new, low-flow toilet should be an easy switch-over.

    Note, some of the toilets from Toto (the skirted ones) require the water supply line to be wider than the standard by a couple of inches. If you like that look and you are remodeling, then that may be a minor point.
  3. Sponsor

    Sponsor Paid Advertisement

  4. Notahandyman

    Notahandyman New Member

    Jul 25, 2007
    Old plumbing

    Thank you for your quick response! I'll check out the distance. I had no idea what "12 rough in" meant & you've cleared that up for me.:)

Similar Threads: plumbing need
Forum Title Date
Plumbing Forum, Professional & DIY Advice Plumbing Guidance Needed Aug 3, 2017
Plumbing Forum, Professional & DIY Advice Help needed with Kitchen Plumbing/ Vents Jul 7, 2017
Plumbing Forum, Professional & DIY Advice Need Help identifying this plumbing piece. Apr 30, 2017
Plumbing Forum, Professional & DIY Advice 1st post - having bathroom remodeled. Need plumbing help Nov 21, 2016
Plumbing Forum, Professional & DIY Advice Need advice on best way to redo laundry room faucet and plumbing Sep 25, 2016

Share This Page