I would run my snake through it attach my cutter then band it to the vent with a 2 x 1 5 or 3 x 1 5 or 4x 1 5 band.
How to snake from the roof.
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Vents allow sewer gases to escape and allow air.
Indoor plumbing is messier than roof plumbing but it s also safer so try plunging and snaking the drain inside first to make sure going on the roof is even necessary.
The waste lines in your house are connected to a venting system that performs two important functions.
Instead they serve to equalize air pressure within the dwv system and also release sewer gases into the outdoor air as all vent pipes terminate through the roof.
Since bathroom plumbing is usually connected through ventilation pipes on the roof snakes can slither their way through the ventilation system and soon into your john.
Snakes can slither their way up anything that will lead them to the roof such as trees.
Snaking a vent stack from the roof would entail carrying a heavy auger up there and running an extension cord to power it but milwaukee tool recently launched a revolutionary idea in augers.
Best way to snake from the roof i use to use flex 1 5 pvc hose.
The vent pipes are part of the drain waste vent or dwv system of a house or building and they do not carry water inside them.
How to clear drains through the roof vent.
Yes the one on the roof.