Yes. The roof vent is usally located on the roof. If the vent is clogged, it can create numerous issues and prevent your plumbing system from working properly.
I don't quite get what you mean. -A vent pipe in a plumbing system is usually 1 1/2 inch ABS pipe and may extend through the roof, or may end in a AAV under a countertop.
4 " vent to prevent hoarfrost and pitch pocket around the pipe filled with bituminous material 4 " vent to prevent hoarfrost and pitch pocket around the pipe filled with bituminous material
Plumbing vent pipe is installed through a cathedral ceiling and metal roof surface there is no easy access into the roof cavity. In an attic after cut off the elbow whose female end contained the remains of the ABS pipe, glued on a short extension and new elbow in the attic, and glued a new plumbing vent rooftop riser into the new elbow. For more information visit at: alliedallcityinc.com
You should not have to clean a vent on the roof. unless you are trying to clean the waste line to the fixture below. Then you would send plumbing rods through the vent on the roof.
A auto vent
In plumbing the roof vent should be a min of 4" to prevent hoarfrost
Vent through roof
Yes a vent pipe can be painted AFTER it has passed inspections and some localities want the piping labeled "Vent"
B-vent pipe.
One that vents one fixture
The alternative to a plumbing roof vent is an AAV. This is an Air Admittance Valve, a simple spring loaded ABS fitting that serves exactly the same function as a roof vent, except that it does not penetrate the roofing. I used 4 of these while re-plumbing my mobile home, three under countertops and one in the wall behind toilet. I'm very happy with their performance and even happier at having less holes in the roof.