A toilet that rocks can be loose at its base, but the cause may be an uneven floor, a damaged flange, or a fastener that no longer holds. Movement can disturb the seal between the toilet and drain.
Check for water without moving the toilet
Look for moisture around the base, under the supply connection, and on the ceiling below if there is a finished room underneath. Report whether water appears after flushing or even when the toilet has been idle. Stop using it if water appears at the base during a flush.
Ask what the repair includes
A plumber may need to lift the toilet to see whether the flange is sound and properly supported. Ask whether the proposal covers resetting the toilet, repairing the flange, and checking for leaks after the work. Tightening bolts alone can damage porcelain if the base is uneven.
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