Can I wet vent a toilet?

Wet vents are typically used when plumbing a bathroom group. So yes the shower can also be vented by the wet vent along with the toilet. There is one major stipulation when wet venting multiple fixtures when a toilet is one of them: the toilet must be the last fixture connected to the wet vent.

How far can you wet vent a toilet?





6 feet

According to the UPC, the distance between your trap and the vent should be no more than 6 feet. In other words, for the vent to work properly, it needs to feed into the drain line within 6 feet of the trapways that connect to it.

How do you wet vent a toilet and sink?

Quote from the video:
Quote from Youtube video: Water from the sink enters into the vent for the toilet. And then goes into the drainage system to the sewer. And i went ahead and changed the colors of the vent pipes to make it a little easier.

How do you wet vent a toilet and shower?

Quote from the video:
Quote from Youtube video: Well the water closet and shower are vented through the wet fend. The wet vent starts here at the lav. Comes down goes around the corner.

What is the code for a wet vent?





908.2 Horizontal Wet Venting for a Bathroom Group.

What is the minimum size of a wet vent?

2 inches

Therefore, the minimum size for the horizontal wet vent pipe is 2 inches and limited to four fixture units. A system having five or more fixture units must be increased to 3 inches.

Will a toilet flush without a vent?

In your home plumbing system there is a plumbing fixture (like a toilet) that is supposed to be connected to a trap and each of these fixtures should have their own vent. What makes toilets unique is that they have a built-in trap, but, without a vent so you still need to install one for it.

Does every toilet need a vent pipe?



“Does a toilet need a vent?” And the answer is yes, your toilet has to have a vent. For more information on the great importance of plumbing vents, read our plumbing vent article here. And the size of this vent pipe depends on your local plumbing code.

Can a toilet and shower share the same drain?

The general answer is that the showers and toilets can use the same drain, but they should not be sharing the same waste trap arm. There are other factors to consider as well, such as whether your drains lead to the main sewer line, or if there are septic tanks that are used in your city or town.

How long can you run a wet vent?

✔ The maximum run, which is the length from the drainpipe to the vent pipe, is 42-inch for a 1½ trap arm, 60-inch run for a 2-inch trap arm, and a 72-inch run for a 3-inch trap arm.

Where is the wet vent located?



Traditional wet venting is the venting of one or two bathroom groups. A bathroom group includes all the fixtures located within a bathroom, such as a water closet, lavatory, bathtub, shower or bidet. All these fixtures can be vented with a single dry vent. Notice how it is identified as a dry vent.

When can a wet vent be used?

A wet vent can handle all the fixtures in two bathroom groups (a bathroom group is a lav, toilet, bidet, and tub or shower). To stay out of trouble with wet vents, go beyond code and use a 4-in. main horizontal waste line where possible.

Can you run a wet vent horizontally?

There are different wet venting systems that both model and state plumbing codes allow. Vertical and horizontal wet vents are the most common of all these systems.

How do you vent a toilet in the basement?

Quote from the video:
Quote from Youtube video: Right under the center of our plumbing wall the discharge side connects to the building drain further downstream. This way then we've got a two inch street forty-five here for the vent.

What happens if plumbing is not vented?



Poorly-vented drain lines will not be able to effectively move wastewater and solid waste out of your building. This could lead to problems such as overflowing drains, backed-up toilets, and similar plumbing issues.

How do you vent a toilet without a vent?

You need to implement one vertical vent pipe to the top of your roof, and it will vent the entire system. That open pipe, connected to the waste, sewer, and pipes, will supply air to the waste pipes.

Do plumbing vents have to go through the roof?

It does not have to go through the roof. From the plumbing code (I have the 2003 edition), P3103: It must not be less than 4 feet directly beneath a door, openable window or other air intake of the building or adjacent building.

Why does my house smell like sewer at night?

Some of the most common include an improperly installed or cut vent pipe, a broken or loose seal or a damaged toilet. If the walls near your toilet emit a persistent sewage smell, the cause could be an improperly installed or cut vent pipe. The vent pipe helps regulate the air pressure in your home’s plumbing system.

How do I stop my bathroom from smelling like my septic?



8 Ways to Get Rid of Sewer Gas Smell

  1. Clean the sink overflow. …
  2. Check the toilet wax ring. …
  3. Caulk the toilet base. …
  4. Clean out bacterial growth in drains. …
  5. Check rarely used bathtubs and sinks. …
  6. Check for leaks. …
  7. Inspect your garbage disposal splash guard. …
  8. Schedule a video drain inspection.


How do you neutralize sewer smell?

Fill a plastic spray bottle with undiluted white vinegar, and use it to neutralize raw sewage odors in your home. Hold your spray bottle 6 inches away from your furniture, and spritz to reduce sewage smells and other odors. In addition, mist hard surfaces in the same way to get rid of odors.