Welcome to Plbg.com
Thank you to all the plumbing professionals who offer their advice and expertise

Over 605,000 posts related to plumbing

Welcome to Plbg.com (aka: PlumbingForum.com) we are the most popular plumbing information sharing, advice, DIY and educational forum on the Web. Ask any toilet, sink, faucet, pump, water quality, and plumbing related questions. Please refrain from asking where to purchase a product, business, pricing, or legal questions, for contractor referrals, or any questions not related to plumbing. Keep all posts positive and no advertising. This site is free and made possible by:  

Post New
Log In
How to Show Images
Newest Subjects
 Plumbing to replace 2 sinks with one
Author: jf0423 (MA)

We're planning to remodel our bathroom and we're considering replacing our current 2-sink vanity with one with a single center sink. Would the plumbing required for that cost significantly more than if we simply stuck with the current 2-sink setup or is it not a huge deal? In other words, will it cost more to change the pipes to use just one sink or to stick with what we have and pay for two sets of faucets and cutouts in the countertop? Thanks for your help.

Post Reply

 Re: Plumbing to replace 2 sinks with one
Author: packy (MA)

probably be pretty simple but post a picture so we can tell for sure..

Post Reply

 Re: Plumbing to replace 2 sinks with one
Author: stuckinlodi (MO)

If the new single sink isn't all that far from one of the previous sink locations you should be able to run new longer water supply hoses from the old sink's hot and cold water shutoff valves to the new sink, especially if they will be hidden behind or inside cabinets. The drain can be similarly run from the new sink to the old drain, as long as it slopes downward from the sink trap over to the existing drain pipe connection it should work fine. That will be fairly low cost. If this new plumbing will be visible then you could have other appearance considerations. Any of the old sink drains pipes can be capped and the unused water supply pipes can have their shutoff valves removed and the pipes capped off, or simply shut off the unused shutoff valves, and again, if they are inside the cabinet they won't be seen or cause a problem. And if you ever add a small under-counter point of service water heater to that bathroom the unused water supply pipes could be handy.

Edited 4 times.

Post Reply

 Re: Plumbing to replace 2 sinks with one
Author: george 7941

The drain plumbing for a single sink will likely be cheaper than the drain plumbing for double sinks.

Unless you are replacing the existing double sinks with two identical new ones mounted in the exact same locations, the existing drain pipes will have to be redone to match the new sinks. It will be less work to plumb in a single sink than it is to plumb in two sinks.

Post Reply

 Thank you all! :clap:
Author: jf0423 (MA)

Thank you all! Yes, we are putting in a vanity that will cover everything so I think I'll just go with the one sink.

Edited 1 times.

Post Reply

Please note:
  • Inappropriate messages or blatant advertising will be deleted. We cannot be held responsible for bad or inadequate advice.
  • Plbg.com has no control over external content that may be linked to from messages posted here. Please follow external links with caution.
  • Plbg.com is strictly for the exchange of plumbing related advice and NOT to ask about pricing/costs, nor where to find a product (try Google), nor how to operate or promote a business, nor for ethics (law) and the like questions.
  • Plbg.com is also not a place to ask radiant heating (try HeatingHelp.com), electrical or even general construction type questions. We are exclusively for plumbing questions.

Search for plumbing parts on our sponsor's site:

Special thanks to our sponsor:

Copyright© 2017 Plbg.com. All Rights Reserved.