Using sink with broken angle stops up
Hello, I'm hoping someone can help me.
I'm the top floor of a condo unit, and my HOA has accused my bathroom contractors of pushing grout or concrete down my kitchen sink, which clogged up the kitchen sinks of my neighbors below. Also, the shower of my neighbor directly below me was pushing forth black sludge from the drain. We have the same floorplan.
My confusion with this is that my brand new kitchen sink hasn't been hooked up yet. The sink is new, but the angle stops are probably 15 years old. The plumber who tried to hook up my sink told me I needed two new ones, as they were so bad when he turned them on with the sink hooked up, water sprayed directly out and they dripped when closed. So, he didn't hook it up to the water until I could arrange for the building to turn the water off. I procrastinated and didn't get it done. Now, my HOA has accused my bathroom plumbing contractors of using the kitchen sink to shove down building materials.
Could my plumbing contractors realistically shove 20 pounds of concrete-like building materials down my kitchen sink with the broken angle stops and not have the cabinets below the sink get wet and the trap and kitchen pipes remain clean and dry?
I had it checked by a plumber, but I'm not getting straight answers othe than the trap is totally clean and that a clog would have been in the verticle pipe.
Krista