If you can see but can t reach run a plumber s snake down the vent pipe.
Roof vent pipe cleaning.
However if the drain vent is still clogged you ll get an overflow of water on top of the vent pipe.
You will need a ladder to access the roof.
Use a flashlight to shine a bright light down the vent pipe to look for further blockage you can reach.
If a blockage develops in the soil.
Probe firmly into the vent and try and reach all areas right inside the vent.
This makes access to the vent pipe easier in the future as you would only need to remove the plug from the cleanout and insert the auger cable into it.
Use a coupling that has a threaded cleanout on it and also install a plug onto the cleanout.
Listen carefully for water backing up and a sudden whoosh when the weight of the water forces the clog into and down the drain.
If you can t see the clog grab your drain auger.
Start twisting your auger cable around to grab hold of the clog and any other gunk that is in the vent pipe.
Feed your auger down the pipe.
Bring a screwdriver and a garden hose with an adjustable nozzle with you when you climb onto the roof.
How to unclog a toilet vent pipe in most cases the vent pipe exits through the roof.
In most houses the main vent stack which opens onto your roof is a continuation of the soil stack which is the vertical waste pipe that leads to the sewer.
Grab the debris if you can see it and test your pipes.
Use a screwdriver to release these so that you can vacuum.
There should be clamps that connect the exhaust pipe of the dryer to the vent.
And on homes that do not have a main drain cleanout accessing a clogged main drain through the roof vent could be your best option.
Feed the end of a garden hose down the vent pipe and have someone on the ground turn on the water.
You can put the tube of the vacuum directly up the vent.
When you feel the auger cable stop you ve hit your clog.
Insert your plumbing snake into the vent.
Before climbing up to the roof get behind the dryer to vacuum out the vent.
If the vent has a cap you ll need the screwdriver to unscrew it.
Start by trying to clean the roof vent and main drain with a hand held drum auger.
To continue feed the end of a garden hose down the vent and have someone on the ground turn on the water.
You should be able to clear the blockage with some effort.