Vented vs. Nonvented Sink
I live in a condo unit. It is all on 1 floor and has 2 bathrooms. The sink in the one bathroom is vented and drains fine. The sink in the other bathroom is not vented and takes hours to drain.
I have found out that the condo is not vented and therefore the sinks have to be. Is there a way to vent the nonvented sink or do I need to replace it? If I need to replace it, where can I find a vented sink? Lowe's is telling me that they don't carry vented sinks because new houses are vented.