We are doing basement renovations and have removed the set tub. Now water will back up and overflow the basemetn sink. If we plug the sink, then water flows out of the washer drain.
The drian pipe runs along the wall for about 8 feet. It drops 1" in that distance. It is 9" off the floor. The top of the drain is 37" off the floor. It is 1.5" copper piping.
So far I have extended the drain up to 52" off the floor, making it 42" above the drain line as was suggested in other threads. I have alos put Draino in the line and run lots of hot water down the line. Today I got a snkae and run it as far as I could get it down the pipe. It didn't seem to make any difference. All of the other drain lines work perfectly.
Is there anything else I can do, or should I just called a plumber?