DIY Chatroom Home Improvement Forum

DIY Chatroom Home Improvement Forum (
-   Plumbing (
-   -   Exploring bathroom addition on second floor (

wease 12-05-2006 11:18 AM

Exploring bathroom addition on second floor
My house is walkout style with 2 floors. The basement is nicely finished. I have 2 bathrooms on the top floor and they're both on one end of the house. I'd like to add a powder room on the other end. This new bathroom will be within 10 feet (width wise) of a bathroom on the lower level. I can see that the waste stack venting comes up through a wall near where I'd like to put this extra powder room.

Am I screwed? I am thinking I will need to get into the plumbing below the floor line in the basement (which is concrete) to cut into the waste. I'll also need to cut into a wall on the lower level to add the piping for the waste lines. Am I correct?

Any outside the box ideas here?

wease 12-06-2006 10:39 AM

Bump. Any plumbers here? Or have I not given enough info?


mdlbldrmatt135 12-06-2006 10:49 AM

Yep.... you'll need to locate the nearest Wast to tie into..... and you might be able to use the existing vent as well.

Ron The Plumber 12-06-2006 07:59 PM

Hi wease,

Sounds like you will need to do as your thinking, new line from basement and walls will have to open up, without seeing this, hard to say what you really need to do there.

Sorry for such a late reply.

sjrhome 12-07-2006 07:18 AM

I am currently at the finishing stage of a 2nd story master bath addition. To say the least, getting the plumbing up there was the hardest part of the job. But now that it is done Im glad I did it. Plan on opening floors and walls.

wease 12-10-2006 09:15 AM

The bathroom in the basement is set on the concrete floor. Any idea how you would find the piping under the concrete that would need to be exposed for the plumber? I don't want to pay him to dig up concrete.

Ron The Plumber 12-10-2006 09:24 AM

If the main enters the slab in basement, then won't you have to do is find the main in the wall and tie a new wye in to take to the addition.

wease 12-10-2006 09:28 AM


Originally Posted by Ron The Plumber (Post 26468)
If the main enters the slab in basement, then won't you have to do is find the main in the wall and tie a new wye in to take to the addition.

I think I understand, but wouldn't that have to be below the grade of the floor in the basement? Right now I'm assuming I need to chip up concrete to find this waste pipe to tie into. Are you saying I can tie into it in the wall above the toilet floor?

Ron The Plumber 12-10-2006 09:33 AM

You have a basement, is there no toilet on the mainfloor? if there is, then find the where that line comes down the wall and enters the slab in basement, should be a 3 or 4" line, expose it there and see if you can take it from there. Draw a picture a post you floor layout for you old and wanted area of plumbing.

wease 12-10-2006 09:51 AM

That's the problem. I have 2 bathrooms on the top floor, both on the other end of the house. The closest bathroom on the top floor would be 55 feet from this new one and would need to snake through a stairway. Impossible.

The only option for connecting that I see is with the bathroom below it and about 10 feet to the side.

Ron The Plumber 12-10-2006 10:00 AM

Yep that creates the problem, you will need to access the slab, and hope the turn does not head to the outside at that point or then you will need to get to the main from outside and bring in a new line.

wease 12-10-2006 10:14 AM

Any idea how to go about finding the direction of the waste vent in that lower bathroom? Do I start at the source and just start ripping stuff up? or do I start at the wall where the plumbing will travel down through and work my way ... somewhere.

Ron The Plumber 12-10-2006 10:20 AM

Most sewer will take the shortest route to city sewer. Sometimes if you know where the cleanout is at outside, remove the cap, look down in it, that might tell you how it's running out of house. If no idea, then start the the point where main enter the slab and follow it.

All times are GMT -5. The time now is 06:09 AM.

User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.

Search Engine Friendly URLs by vBSEO 3.6.1