Wastewater from upstairs neighbor in kitchen sink!
Hopefully someone in this forum can help answer this question. I live in a three story condo, on the second floor. Twice since I have lived here, my kitchen sink has filled up with dirty dishwater, apparently from my neighbor upstairs. This last time, the backup occurred when I was out, and it spilled out of my sink and all over my kitchen floor, and leaked through the floor to the first floor as well! This is no ordinary tap water; it was filled with food particles and soap. This flooding occurs when my upstairs neighbor drains her sink (after washing dishes) and runs the garbage disposal. I also have a garbage disposal in my unit, but my sink has been empty and disposal clear of food each time this has occured.
Why does the water come into my sink, and then fail to drain? Is it because the pressure of her disposal? All I can think is that maybe her disposal "forces" the water up my sink, and then all the food garbage in the water subsequently blocks my drain, causing the water to back up and flood my kitchen. The condo association plumber said that nothing is wrong with the pipes in the building, and suggested I get a "backflow preventer valve". Is this adequate to prevent this from happening again?
Thanks in advance for any help you can provide!!
Wastewater from upstairs neighbor
Hopefully someone in this forum can help answer this question. I live in a three story condo, on the first floor, there's no basement. My toilet was backed up and kitchen sink flooded my kitchen with dirty dishwater, apparently from my neighbor upstairs. I hired a plumber to snake my plumbing and seemed to work temporarily. The plumbers advised me that it's because my building is old and there's depression in the main plumbing stack. Recently, it started backing up again. I need to convince my Condo Board that this is not just my issue, but a building issue. Also, what is the solution?
Thanks in advance for any help you can provide.
Waste water from upstairs
No not main line !
But common drain from kitchen sink into lav. Sink needs the kitchen drain power snaked by a professional drain cleaner :d
you lav sink is 30" high ! The kitchen sink is 36" high water seeks
the lowest level !
I used to do work at some apts, that had this happen all the time !