Sink keeps overflowing while away from home
Water keeps backing up and overflowing from sinks while people are away, causing severe water damage to ceilings and flooding in rooms below. Even after manually emptying the standing water, the sink fills right back up overnight.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
- 1Turning off the main water valve before leaving for an extended period
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“Parents got back tonight to find both of the master sinks overflowing with water damage to ceiling in the living room below master bathroom.”source ↗
“I emptied the sink with a cup last night, woke up to sink full of h20.”source ↗
“This is overflowing and causing minor flooding in my basement. Any idea how to remedy this situation? Thanks in advance!!”source ↗
Where this came up
People with this problem also raised
- 24Why does my sink drain keep clogging up?
- 5Why do dirty dishes pile up in the sink?
- 13Why is water backing up into the sink when appliances drain?
- 6Why is my double kitchen sink draining so slowly?
- 2Why does my washing machine keep overflowing every few months?
- 3Why does the kitchen sink splash water everywhere?