OT plumbinhg help

[nobands]

So all other drains work, but there's only 1 pipe exiting the house? .that would say it's before the main.

 

[DelFowl18]

You must be a plumber or manage a ton of rental properties. This was my 2nd cast iron sewer headache in the last 10 years.

I own a small plumbing company. Started with the company when I was 13 and bought it a little over 2 years ago. We do a LOT of old homes and cast iron work. I still use my packing irons for lead too

 

[jbennett]

Hot is on the left, cold on the right and **** runs down hill. All you need to know bout plumbing.

You forgot Don't chew your fingernails.

 

[DelFowl18]

Open your cigarettes from the bottom of the pack!

 

[igo4dux75]

and payday is Friday!

 

[DaPutts]

 

[OGblackcloud]

Steam goes up ---- goes down hill

 

[Sam Ortmann]

Hot is on the left, cold on the right and **** runs down hill. All you need to know bout plumbing.

You forgot don’t lick your fingers and pay days on Friday.

 

[Sam Ortmann]

I 'think' I saw cast pipe actually going into the ground where it goes to the county sewage system.

If it’s 50 years old, you should hope it’s cast underground. Cause that beats the hell out of clay tile or orangeburg, which is just wood pulp compressed with tar paper—which is as weak as it sounds—and was pretty common back then.
And as @nobands said, if this is the only drain giving you problems then its not the main. The main will back up out of the lowest drain in the house, usually a floor drain or a basement/first floor shower, not usually the kitchen sink. And even if the kitchen sink is your lowest drain, they would back up whenever ANY water is used in the house, not just when the sink is used.
So I guess the good news is that this definitely sounds like it’s just a sink issue.

 

[GUNNERX2]

I lived the nightmare of orangeburg 40 years ago. Fought tree roots constantly and ended up running pvc from the house to the street. Fortunately, it wasn't that long of a run but still pricey.