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View Full Version : Upstairs washing machine overflows into basement sink


swanlight
Dec 27, 2013, 04:29 PM
The main floor washing machine overflows into our basement bathroom sink. It also gurgles into the dishwasher drain. My brother-in-law tried to fix it, but to no avail.

hkstroud
Dec 27, 2013, 05:01 PM
Sounds like you have a blockage in the main drain, after the downstairs sink. Snake from the downstairs sink drain. If you dishwasher gurgles the dishwasher drain is not properly installed.