How to Move a 2″ Sink Drain 8.5″ During a Bathroom Remodel
When remodeling a bathroom, adjusting plumbing fixtures like a sink drain is often necessary. If you’re facing the challenge of moving a 2″ drain 8.5″, here’s how to tackle it efficiently.
Q: How can I move a 2″ sink drain 8.5″ over in a bathroom remodel?
A: There are a few effective ways to reposition your 2″ sink drain, even with limited space for elbows.
You’ve mentioned that you don’t have enough clearance for a pair of 45° elbows, and that’s a common challenge. Here’s a step-by-step guide on how to move the drain while minimizing complexity:
1. Remove the Existing 90-Degree Elbow:
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Since you have good access to the basement, the first step is to cut out the existing 90-degree elbow at the base of the vertical drain pipe.
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Make sure to carefully cut around the pipe so you can replace the elbow with minimal disruption to other plumbing connections.
2. Use an Offset or Flexible Coupling:
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If the joist bay only gives you 9″ of space, an offset fitting is your best option. These fittings allow you to move the drain horizontally without needing to use large turns or elbows.
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Alternatively, you can use a flexible coupling or accordion-style fitting that gives you the room to shift the pipe over while maintaining a smooth flow.
3. Use a 45-Degree Elbow with a Shorter Vertical Rise:
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Another option is to use a 45° elbow but with a shorter vertical rise. This would help create a more gradual angle, allowing you to fit the drain within the restricted space.
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You may also want to use two 45° elbows, but ensure the joint connections stay secure to avoid leaks.
4. Test for Slope and Flow:
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After repositioning the pipe, make sure it still follows the correct slope (about 1/4″ per foot) to allow proper drainage.
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Double-check your work before sealing everything up.
5. Consider Professional Help:
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If you’re not sure about cutting or replacing the pipe, it might be worth hiring a professional plumber. A licensed plumber can ensure the new drain setup works properly and meets local building codes.
By removing the old elbow and using a flexible offset, you should be able to shift the drain without any major issues. This method saves space and reduces the need for additional height in your joist bay.
For more plumbing tips and advice, visit Plumbing 101.
I’m Chris Mayer, writing for Plumbing 101.
