i am thinking of putting a bathroom in my garage but im not sure what is the best way to go about it ,?

Question

the house is located in new york long island and the house it self sits on a slab so what would i have to do to get to the waste line. is this a costly project, can it be done, the garage is located about 5 feet from the house and about 25 feet from the bathroom inside the house , please any tips or advice would be great , thanks

Answer 1

You can build the floor up above the slab floor so that water and sewage lines have room to run between the slab and the bathroom floor.

Answer 2

Your main concern is the sewage line. Assuming that the main sewage line out of your house is below the inside bathroom, (It's usually below the toilet) you'll need to excavate the concrete from where you want the bathroom to where the bathroom is. This includes ripping up any carpet, wood, tile or linoleum flooring, and going under walls. You need 1/4" of drop per foot of length... so at 25 feet it need so be 61/4" deep, plus pipe size (4"), plus refilling the concrete (4"). So about 15" deep at the inside toilet. If your not getting the picture this is an expensive project. I'm guessing about $8,000 just for the sewer line, not including replacing flooring.
The other option is what's called an "up flush" you could get everything installed for around that $8,000 mark with that.

Answer 3

That's a big can of worms. As Kyle said, you could raise the floor but that would kid of kill alot of space. If you have a septic tank in the back, you could just run a separate line directly to it. Your biggest problem will be getting the permits. Since the garage is not attached to the house, it will be fairly obvious that something is being done. Beyond that, to not have to raise the floor you will need to break it open to lay the pipes. Getting water from the house will also be no small task. If the garage is not heated, you will also have the problem of potential frozen pipes in the winter.
It will probably cost more than it is worth.

Answer 4

locate your sewer line where it exits your foundation dig it up and check the depth you have at that point. you will need a minimum of 1/8" of grade per foot 25'= 4 1/8" of drop in your new sewer line you will have to install your new line at depth to account for frost line so factor that in. if the depth and grade work out you can run the line outside and along the side of the house to meet the existing line. locate your new toilet against the wall of the garage and you wont have to remove as much concrete to get the line under the foundation.
if the existing line is not deep enough at the closest point locate it further downstream and check the depth there it may be deep enough at a point farther from the house.