Moving/Extendiing or rerouting pipes

Jerome8283 · Oct 22, 2006

Extending or rerouting pipes

Hello guys,

I'd like to relocate my guest bathroom sink. I believe my choices to relocate my sink to the adjacent wall are, extending the existing pipes or rerouting the pipes. I'm not sure if extending the drain pipe is possible and covering up the existing area once extended. Rerouting pipes would require opening the walls and hopefully having the space on the adjacent wall to reroute to. I posted pics. The second pic (9324) shows the adjacent wall where I'd like for the sink to exist. I'd like some thoughts on this. Thanks.

Jimbo · Oct 22, 2006

By opposite wall, do you mean the adjacent wall, or the wall completely across the room? And I dont understand your question of "extend" versus "reroute". The pipes need to get to the new location. That can be done in the wall, or if there is a basement, it could be done there.

The only "big" question is the vent for the drain. Depending on what code you are under, the vent will need to be within about 60" of the trap. If your new location puts the trap more than 5' from it's present location, then the vent will also have to be relocated.

Sponsor · 2022-01-29T12:20:58-0800

Jerome8283 · Oct 22, 2006

Sorry, I meant adjacent wall. The second pic (9324) shows the adjacent wall where I'd like for the sink to exist. It is definitely within 5'. My question is, can I extend the pipe to to new adjacent location? Are there extensions available for this?

When I say extend I mean extend by adding an extension pipe on the existing drain pipe to get it to the new location without rerouting it within the wall. And reroute would be opening up the wall, cutting and rerouting to the new location within the wall.

I guess in both cases it's rerouting.

Jimbo · Oct 22, 2006

OK, so I gather you just want the pipes to come in through the side of the new cabinet. No problem with that. You will want to locate the trap directly below the sink drain, and extend the trap outlet to couple in at the old wall location. Try to slope that pipe by 1/4" per foot. For sure, make certain it does not slope TOWARDS the trap!

For the water lines, it would be easy to leave the shutoff valves as is , and use longer braided stainless steel flex lines.

The only problem you would have is if your new cabinet has drawers on the left side, that will cause a lot of interference!

Jerome8283 · Oct 22, 2006

Yes, exactly. My first thought was doing just that. I was looking at vanity cabinets. Due to the location of the existing plumbing the vanity would need to be at least 17" deep and 36" wide (no problem here). The wall where the sink is now is slanted about 65" up the wall. It's a cape second floor home. Having the sink in the current location is not practical because I want a mirror to be hung which is not possible on the slanted wall.

I'm good with the braided stainless steel flex lines but wasn't sure about the drain pipe. Are there any restrictions on the length of the drain extension? Can I extend using PVC? So, as long as I slope the pipe by 1/4" per foot away from the trap, meaning away from the sink toward the wall I'll be ok, correct?

Jimbo · Oct 22, 2006

As we mentioned before, the trap arm can be up to 60" under most codes.

You are connected to the wall tee with a slip joint nut rigth now. You could extend with PVC tubular, or possibly could remove the trap adpapter and use glue-up PVC all the way to the trap.

Jerome8283 · Oct 22, 2006

Thanks Jim. Sorry, you did answer the distance question.

Jerome8283 · Nov 6, 2006

jimbo said:
For the water lines, it would be easy to leave the shutoff valves as is , and use longer braided stainless steel flex lines.

I went to Home Depot to attempt to get longer braided stainless steel flex lines but could not find any. How long do they come? Where can they be purchased? Can they be extended with some sort of connector?

Thx

Jimbo · Nov 6, 2006

In the "dishwasher install" area you can find these in 48 and 60 inch,

Jerome8283 · Nov 7, 2006

ah..I did see them but thought they wouldn't work since it said dishwasher. Thanks

hj · Nov 7, 2006

supplies

Dishwasher supplies do not have the end on them that you will need for your faucet. A 36" cabinet is only 18" to the center so 30" faucet supplies, which should be available at any good plumbing or hardware store will work. Doing it your way will "use up" all the space inside the cabinet so do not get one with any drawers in it.

Jerome8283 · Nov 7, 2006

Thanks. I'm building a cabinet via ply and will tile it.

Jerome8283 · Nov 8, 2006

Faucet Plumbing

Hey Guys,

I was able to find the cables I needed to extend the length of my faucet connectors. Now I'm trying to confirm what I need to extend the trap piping. Here's what I have (see pics below).

The wall connection is 1-1/2" (9357.JPG) threaded. I need to extend from the wall 24" or less. The tail piece from the drain is 1" (9358.JPG) and the PVC trap (9360.JPG) I purchased is 1-1/2" with a 1-1/4" pipe. After getting this setup home it appears this will not work due to the 1" tail piece pipe. Are all the sink trap J-Bends 1-1/2"? What am I missing here? How can I make this work?

Thanks in advance!

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