You can pass the vent through a wall instead of through the roof, but it must still rise over the roof.

Does a vent stack 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.

Can you vent a toilet into a wall?






Quote from Youtube video: Directly under a wall this allows the toilet's vent takeoff to be vertical. And that's important. So this vent continues up the wall.

Can you put a cheater vent in the wall?

In these situations, when it’s not easy to properly vent to the outside, you may have a contractor (or plumber) suggest you use a cheater vent, or Air Admittance Valve. A cheater vent (or air admittance valve) is a vent that comes off the fixture — for example, a sink in a new powder room — and is buried in the wall.

Can a plumbing vent run horizontal?

2. Can Vent Pipes be Horizontal? There is no problem with running your vent pipes horizontally as long as you remember that there should be a minimum clearance of 6 inches above the spill line.

Can a plumbing vent go thru a wall?

You can pass the vent through a wall instead of through the roof, but it must still rise over the roof.

Why is there a need to put up a vent pipe thru roof?





Plumbing vents are pipes that extend from the waste pipes to the outside of the building, often going through the roof. The vent pipes allow the sewer gases to escape to the outside, rather than being released inside the house. The vent pipes also allow oxygen into the waste pipes.

Can a toilet shower and sink share a vent?

Wet venting is most common in conjunction with toilets and sinks; the drain for the sink is also the vent for the toilet. It can also be used for a variety of other applications but due to the following rules this is the most convenient and common situation to run into.

Does a plumbing vent have to go straight up?

Plumbing vents need to be straight on the vertical. This is necessary to avoid any vapor locks from occurring. When there is a bend in the vent pipe, moisture accumulates and is trapped.

How far can vent be from toilet drain?

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.

Can plumbing vents have bends?

One should avoid bends and turns in the vents to ensure that there is no possibility of a trap. If it is being placed horizontally, ensure that it is at an angle no more than 45 degrees. Essentially, the vent pipe needs to be dry at all times.

Can you vent a toilet from behind?

There are many different ways to vent your fixtures, and you’re going to want to cater to the factors present in your bathroom. The most common configuration is to feed 2″ PVC down from the ceiling within the wall behind the toilet. The vent pipe connects into the toilet drain pipe.

Where should plumbing vent be located?



Vent pipes must be installed so they stay dry. This means that they should emerge from the top of the drainpipe, either straight vertically or at no less than a 45-degree angle from horizontal, so that water cannot back up into them.

How do you vent a toilet without outside access?

Installing a ceiling vent is probably the most efficient way to ventilate a bathroom with no outside access. A ceiling vent is a unique machine that allows air to escape from the bathroom. In other words, it’s a machine that, like an open window, allows moisture to escape from your bathroom.

Can a plumbing vent go down?

A vent must not allow accumulation of trapped air/gasses. Bending downwards would probably not be acceptable.

Where should plumbing vents be placed?

Vent pipes must be installed so they stay dry. This means that they should emerge from the top of the drainpipe, either straight vertically or at no less than a 45-degree angle from horizontal, so that water cannot back up into them.

What is the difference between a vent stack and a stack vent?



A vent stack is a vertical pipe that is only used for venting, and runs upward from the drain piping to the open air outside the home. Vent stacks are primary vents and accept connections from other vents in a plumbing system. A stack vent is used for both drainage and venting.

Can a plumbing vent go into attic?

Yes, a plumbing vent can terminate in the attic. But it must have an air admittance valve at the termination to keep noxious sewer gas fumes from rising into the attic.

Where is the vent stack located?

It is a vertical pipe attached to a drain line and runs through the roof of your home. The vent stack is the pipe leading to the main roof vent.

Can a plumbing vent have bends?

One should avoid bends and turns in the vents to ensure that there is no possibility of a trap. If it is being placed horizontally, ensure that it is at an angle no more than 45 degrees. Essentially, the vent pipe needs to be dry at all times.

How far can a toilet be from a vent stack?



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.

Does every plumbing fixture need a vent?

Every plumbing fixture must also have an attached vent. Without a vent, negative pressure from water leaving the system can cause a siphon which empties the trap. The top of stacks must be vented too, via a stack vent, which is sometimes called a stink pipe.

Can a toilet shower and sink share a vent?

Wet venting is most common in conjunction with toilets and sinks; the drain for the sink is also the vent for the toilet. It can also be used for a variety of other applications but due to the following rules this is the most convenient and common situation to run into.

How do you vent a bathroom with no outside access?

Installing a ceiling vent is probably the most efficient way to ventilate a bathroom with no outside access. A ceiling vent is a unique machine that allows air to escape from the bathroom. In other words, it’s a machine that, like an open window, allows moisture to escape from your bathroom.