Stack Pipe Blocked !link! -

It carries wastewater and solids from your toilets, sinks, and tubs down to the main sewer line.

Hard water minerals (scale) and grease can build up on the inner walls of the pipe, narrowing the passage until it fully closes. stack pipe blocked

Wipes (even "flushable" ones), feminine hygiene products, and excessive paper can snag and build up over time. It carries wastewater and solids from your toilets,