Does a toilet need to be vented?
Does a toilet need to be vented? “Does a toilet need a vent?” And the answer is yes, your toilet has to have a vent. And the size of this vent pipe depends on your local plumbing code. Your toilet's individual vent needs to be 2”. How does a vent work in a toilet? Generally, when vents are used, the vent pipes are attached to the traps. They attach to these traps a little bit above the horizontal section of the pipe that’s responsible for moving water towards the drain. Now, if a vent pipe gets clogged or wasn’t installed...