I am putting in a 1/2 bath in the old garage conversion (Building a laundry room, pantry game room in there as well). The new bath is on the opposite wall as the Laundry and there are no pipes for the outlet in the area of the Toilet.

I am trying to figure out if I should go with a flush mount (or hanging) rear discharge or a flush mount, bottom discharge.

Thoughts? Here is what I have made as my pro's/con's of a rear discharge:

Pros
Will not have to cut up foundation
Easier to install?

Cons
Very costly. (I am seeing them around $750)
Limited toilet choices in Residential.

Chad, in my opinion: go with wall mounted toilet. They look great and work very well. Also, they are only 16" deep. However, they are not necessarily easier to install. We just finished installing 2 of them yesterday. Yes, cost is higher. But if your situation is so unique that it would permit installing it directly behind your existing toilet than you will definitely save money. But please, study your present plumbing system first since many things will have to "line up" for you so you can utilize this option. You can get the whole set up in Snyder Diamond.

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Originally Posted by chad_of_CA

I am putting in a 1/2 bath in the old garage conversion (Building a laundry room, pantry game room in there as well). The new bath is on the opposite wall as the Laundry and there are no pipes for the outlet in the area of the Toilet.

I am trying to figure out if I should go with a flush mount (or hanging) rear discharge or a flush mount, bottom discharge.

Thoughts? Here is what I have made as my pro's/con's of a rear discharge:

Pros
Will not have to cut up foundation
Easier to install?

Cons
Very costly. (I am seeing them around $750)
Limited toilet choices in Residental.

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I disagree with Milo. Your wall will have to be beefed up to mount a wall hung carrier. You will need to pipe the flush valve witth 3/4". A wll hung toilet's deffinatly not easier to install then a regular bowl. If you're discharging into a second story stack then every fixture beneath the toilet will have to be vented. And lastly the cost.I could go on but do you really need more reasons to go with a regular toilet? Good luck and thank you for rating my answer. Tom

Tom is not offering correct information. Geberit and Grohe wall-hung toilets use 1/2" water supply. No clumsy, noisy, industrial-looking, expensive flush valve is needed. They are designed for residential use.

Some interesting points. Some items to add to my scenerio.

This in on the first floor (no second story) and the wall is currently just the bare studs now.

To put in a flush mount bottom discharge, I will need to cut the foundation, dig the path out of the house. Once the lines are outside, I will then dig the line (around 30 feet) from that point to hook it into the existing plumbing.

I was thinking of a flush mount, rear discharge as it would allow me to not need to hang it and beef up the wall, but not make me have to cut out the foundation. Seems like the best of all worlds, except for the costs!

Chad: Are you on slab or raised foundation ?

My bad! Sorry Chad, That's why I depend on experts like Milo to keep me up on current changes and developments. A lot of new stuff on the market since I retired 20 years ago. Thanks Milo!
Chad, From your description you would, indeed be better off with a wall hung unit. K and I apologize for any confusion I may have caused. Tom

I am on a Slab on Grade foundation.
The pad is 4 inches thick with 12 inch thick under the ground on the perimeter of the building.

I wish it was a raised foundation. That would make all my issues go away!

Chad: yes, slab is problem. You may also have tension wires in the slab making it even more difficult.
As Tom mentioned in one of his previous posts, you will have to have at least 2"x 6" wall to run toilet drain sideways. You can run it in ABS/PVC or Cast Iron. Once you get to the exterior, you can turn downward and into the ground. Any exposed section of pipe should be Cast Iron. You can continue with ABS/PVC under ground - if that's your choice of materials. You can run water from the other toilet on the other side of the wall. Since you have bathroom close by, you should be able to connect new 2" vent with existing vent system servicing the other bathroom.

It looks like you are in California. If positive, you can purchase frame, toilet, dedicated seat ( this type of toilets take special seat) and push-flush trim from Snyder Diamond or Hirsh Pipe and Supply. Let me know if you need more specific contact info and model numbers. I deal with Hirsh. They will UPS you all you need.