Floor Drain Backing Up: Common Causes and What to Do
When a floor drain backs up, it’s more than an inconvenience. Standing water in a basement, laundry area, or garage can create odors, damage floors and belongings, and, in some cases, indicate a problem further down the plumbing line.
While the exact cause varies, most floor drain backups fall into a few predictable buckets: blockages near the drain, problems in the building’s trap or venting, or—less commonly—issues in the municipal sewer or neighboring property.
1) The most common culprit: a clog in or near the drain
Hair, soap residue, dirt, leaves, grit, and small debris can accumulate and eventually block flow. Grease and sludge are especially common in drains connected to utility sinks, mop water, or areas where cooking-related residue is washed away.
Clogs can be localized—right at the strainer, inside the drain body, or in the short run between the dr ... Read more »
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