On 11/19/2019 8:23 PM, trader_4 wrote:
On Tuesday, November 19, 2019 at 10:44:07 PM UTC-5, David Wood wrote:
replying to Jeff, David Wood wrote:
Ye i have the same problem has anyone fixed it yet or did you have to dig up
the floor?

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Is the drain made of PVC/ABS or metal? How old is the house?
If it's plastic, you could put muriatic acid down it which will dissolve it.
If it's metal or there is reason to believe the pipe beyond is metal,
then the acid thing is has risk, as the acid will also affect the pipe.
Not sure which will win. The concrete will react more, but if you have
2" worth of that to dissolve and only 1/8" of metal pipe, who knows.
I guess you could mix up some more of the cement
let it harden, then put it in a plastic bucket with a piece of steel pipe
and see the effects on both.


Acetone?