Bathtub Drain Problems

Discussion in 'Shower & Bathtub Forum & Blog' started by silverrhino, Jul 8, 2014.

  1. silverrhino

    silverrhino New Member

    Messages:
    8
    Location:
    Texas
    I am remodeling out bathroom and ran into a big problem yesterday. Our cast iron tub does not have a big enough drain hole for me to put in the 1 1/2" drain kit. We have an old cast brass tub drain lower portion which is still good. However the 1 3/" brass pipe that was threaded into it is not usable.

    What do I do?? If I could find a piece of threaded 1 3/8" brass I could screw it in and then use a rubber coupling to go to the PVC....can't find that anywhere!!

    Is there a way to easily make the hole in the bottom of the tub larger??? Or do I have to buy a new tub??

    Please help!!
  2. Terry

    Terry Administrator Staff Member

    Messages:
    15,124
    Location:
    Bothell, Washington
    Have you removed the tub drain and tried.
    I've installed many a new waste and overflow on old cast iron tubs.
  3. silverrhino

    silverrhino New Member

    Messages:
    8
    Location:
    Texas
    Thank you for the response. I found a touch drain that had an adapter that would allow it to work in either 1 1/4 or 1 1/2. When I got it home I was excited that I had solved the problem.

    Ok...... Here comes the good part! When I tried to put the drain in without the 1 1/2 bushing, it looked like it would fit, if I just cleaned up the edges of the hole in the tub. Started to do that when I suddenly realized that what I was cleaning up was not the edges of the tub hole, BUT, 50 year old plumbers putty that had hardened and made the hole look like it was much smaller than it actually was! Cleaned out the old putty and guess what, my original drain from the kit fits just fine!

    I had simply mistaken the hardened putty for the actual tub material......This is soooo bad, I just had to share it!
  4. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

    Messages:
    4,406
    Location:
    North Vancouver, BC
    Not so bad. Just a day in the "School of Hard Knocks".... Thanks to you hundreds of more people might be saved the hassle. Thanks for coming back and letting us know your class lesson.
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