The two toilets and the tub in the upstairs bathrooms are plugged and will not drain or flush. There is a gurgling sound when we flush or try to plunge the toilets. I have been told by a plumber that he thinks the main stack vent is blocked. How can I unstopped or clear the main stack vent? Are there any problems or things to be concerned about? Thank you.

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Originally Posted by rpkendall

The two toilets and the tub in the upstairs bathrooms are plugged and will not drain or flush. There is a gurgling sound when we flush or try to plunge the toilets. I have been told by a plumber that he thinks the main stack vent is blocked. How can I unstopped or clear the main stack vent? Are there any problems or things to be concerned about? Thank you.

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Not knowing how the two bathroom fixtures are configured prevent me from answering. As a rule each bathroom group's vented by the lavatory vents. However, if the bathrooms are back to back and share a common vent then you would only need to snake out the common vent. Perhaps if I had more details I could be more specific. Regards, tom