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View Full Version : Need to shift my bathtub drain!


jerry generic
Jun 14, 2009, 09:02 AM
I'm in the process of remodeling my master bath, and the old tub (standard size) already removed. I have a Whirlpool "drop in" tub that will fit in (barely).
Anyway, the hole is now exposed in the slab, and I can see where the old drain/overflow connects to what I'm assuming is the waste pipe to the sewer, and I'm going to have to extend the "buried waste pipe" over about 4-5" to accommodate the new openings for the new tub.
I'm a handyman and have the tools but have not done this before.
I'm think I have to jack up some of the slab around the existing drain in order to get enough room to work on it, but what then? Is there an existing aftermarket part that would make this any easier for me? What should I look out for? Am I going about this correctly?
Thanks for any help in this matter.

speedball1
Jun 14, 2009, 09:49 AM
What type of pipes do you have?
You are correct.
I'm going to have to extend the "buried waste pipe" over about 4-5" to accommodate the new openings for the new tub
Take up the floor, Cut out the trap and raiser and extend them over to the new location. You will also have to cut in a new 12 X12" tub dap-out. Good luck, Tom

Milo Dolezal
Jun 14, 2009, 11:24 AM
Jerry Generic: Do you mean your new drain is 4-5" off set and the new tub won't line up now ?

If you use Geberit cable drive overflow with ABS rough-in than you would not have to do anything. This same thing can be accomplished by using "Touch Down" or "Toe Touch" tub overflows. You just want to make sure it has ABS drain and overflow and you supply and build your rough-in yourself. In both cases, you just off set the rough-in to meet the existing drain in its off-set location.

If you are using regular overflow with trip lever than you will probably have to do some concrete breaking...

jerry generic
Jun 14, 2009, 04:14 PM
What type of pipes do you have?
You are correct.
Take up the floor, Cut out the trap and raiser and extend them over to the new location. You will also have to cut in a new 12 X12" tub dap-out. Good luck, Tom
Thanks for the input, hope this pic reaches you, where my finger is , is about where the new (trap and riser? Drain and overflow? Same thing?) drain should go.
About how much should I cut out? The copper tubing nearby makes me a bit nervous, they won't be in my way, will they?
Why is my dap out (hole?) longer than it is wide?
Thanks for any observations and input, I'll be sure to donate to your cause!
20802

jerry generic
Jun 14, 2009, 04:25 PM
20804
Jerry Generic: Do you mean your new drain is 4-5" off set and the new tub won't line up now ?

If you use Geberit cable drive overflow with ABS rough-in than you would not have to do anything. This same thing can be accomplished by using "Touch Down" or "Toe Touch" tub overflows. You just want to make sure it has ABS drain and overflow and you supply and build your rough-in your self. In both cases, you just off set the rough-in to meet the existing drain in its off-set location.

If you are using regular overflow with trip lever than you will probably have to do some concrete breaking...

Thanks for your input- here's the photo ( I sent this prior so if it appears repititious I'll stop, as I'm not sure how it appears on the thread.
The photo explains better- my finger shows where the drain should be... what do you think?
Thanks

speedball1
Jun 14, 2009, 04:36 PM
Is that the trap raiser I see over to the right that you haven't uncovered? Show us the trap. Tom

Milo Dolezal
Jun 14, 2009, 04:42 PM
Tom, that's the broken overlflow assembly...

speedball1
Jun 14, 2009, 04:49 PM
Tom, that's the broken overlflow assembly....

Then that would be the trap raiser, Correct?

Milo Dolezal
Jun 14, 2009, 07:06 PM
Then that would be the trap raiser, Correct?

Not exactly Tom: it connects to the trap raiser... Technically, it is part of tub overflow

jerry generic
Jun 15, 2009, 01:08 PM
Not exactly Tom: it connects to the trap raiser.... Technically, it is part of tub overflow

Thank you for your input, Milo (and Tom!), I just realized what a bad pic that was- yeah the top of the pic cuts off what is my overflow. The bottom part which connects to the tub drain had snapped off after I accidentally stepped on it.
But yes, Tom, I haven't yet done any digging yet... so there's a "trap raiser" under there?
The recessed area (the rectangular hole in the slab) looks like its capped with mortar- is it hollow under there? :confused:
The house is about 15 years old, if that helps any, and will be happy to snap additional photos if needed.
I have a medium-sized demo hammer with a bull tip ready to go if I need to do any "exploratory surgery"!