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-   -   Question about waste plumbing when adding 1/2 story bath (http://www.houserepairtalk.com/f33/question-about-waste-plumbing-when-adding-1-2-story-bath-17239/)

swindmill 01-20-2014 12:58 PM

Question about waste plumbing when adding 1/2 story bath
 
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I am currently remodeling my girlfriend's 1st floor bath. There is a wall between the kitchen and bath that houses all of the home's waste and supply lines. We had a plumber come in and cut everything out and replace it with PVC and PEX. While this wall is open, I was thinking it's worth considering running plumbing to the attic, which is huge, in case we want to add a bath up there in the future. My question is what would have to be done for waste pipes on the second floor? Can the main stack in the attic be tapped into? Does it have to be split in the crawl space? Basically, it would be simple to run supply lines up there but I'm not sure how involved the waste lines would be. I don't want it ready for a bathroom, I just want to be in a position where a full bath can be added without having to rip up anything on the first floor. I've attached a picture to help make sense of my question. Attachment 6037


CallMeVilla 01-20-2014 09:52 PM

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Yes, you can run the waste lines from the attic in the same pipe. You will need to pay attention to the location and avoid cutting floor joists (like most plumbers do) ... this can compromise structure in a very bad way. Better to use bulkheads.

You might give some serious thought to the location of the future bath appliances NOW. Can you cut into the pipe and insert the necessary hub fitting at a later date.


swindmill 01-25-2014 04:05 PM

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It's great that she has a plumber in the family. He put this in before finished hanging drywall today. Attachment 6056



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