What Happens If a Toilet Is Not Vented? [Pros & Cons]

It is nearly impossible to plumb a toilet without vented. Venting the toilet and shower sink needs to vent even if you need to use the right size of the vents. But, what happens if a toilet is not vented, or what can you do when your toilet is not vented?

There are plenty of problems that come with the toilet drain connection when the toilet is not vented. Without venting the toilet, the wastewater and solid waste come out in your home and affects the building. Moreover, you will also face overflowing drains, backed-up toilets, and other plumbing problems.

Now, it is time to clear your confusion so that you can understand the advantages, disadvantages, and other factors of a toilet. So, let’s get started.

What Happens If a Toilet Is Not Vented?

It secures your toilet when your toilet is properly vented. If the toilet comes with vented, your toilet drain system smoothly works and also takes enough flush air pressure. When you are flushing your toilet, it creates air pressure which is affected the toilet drains.

Similarly, suppose your toilet is not come vented. In that case, you will face some serious problems such as building problems, bad smells, water leakage problems, plumbing problems, water waste, and water problems.

To clear your confusion and understand the importance of toilet venting, I share the advantages and disadvantages in the following sections. So, let’s break down the following advantages and disadvantages.

Advantages of Vented a Toilet

There are couples of advantages you will discover when you are venting your toilet. So, let’s check out the following advantages to understand the importance of venting your toilet clearly.

• When the toilet is properly vented, you will avoid a bad smell
• Secondly, a vented toilet easily avoids building destruction
• The vented toilet helps the toilet drain pass water smoothly and fastly
• A single flush or dual flush toilet always demands a vented toilet
• You can find plumbing easily whenever you want with a vented toilet

Disadvantages of a Toilet without Vented

You will face some problems when you are not vented your toilet, which I describe in the following section.

• When a toilet doesn’t come with vented, you will face a bad smell in your building
• You may also face a plumbing problem
• Moreover, without vented a toilet, your building may affect, which is not a good option for the building
• Of course, it affects the painting which you do for your building
• The flushing system of the toilet is not working properly

It is truly important to vent a toilet before completing the drain system. After checking the advantages and disadvantages, you may understand the importance of venting a toilet.

Where Is the Toilet Vent Pipe Located?

You will find the toilet vent pipe in a crawlspace or a basement connected and coming from your building. You will also find out the toilet vent pipe to see that PVC pipe that means most of the vent pipe comes with PVC pipe. On the other hand, the vent pipe has also come with metal, plastic, and other materials.

According to my experience, the toilet vent size comes from 1.5-inch to 2-inches which you can also measure to find out the toilet vent pipe. You can also find out the toilet vent pipe located in the shower or toilet drain areas.

Is a Clogged Vent Pipe Dangerous?

According to plumbers, the clogged vent pipe is much more dangerous and risks water backup as well as toxic gashes. The other problem you will face is the water damage and damage to the drain pipe, which you need to repair again.

To avoid clogging the vent pipe in your toilet, you should clean the toilet properly, and of course, you should ensure that the toilet takes fresh water for flushing. To sum up, the clogging vent pipe is dangerous for your toilet.

Does a Ground Floor Toilet Need a Vent?

Of course, you need to vent a ground floor toilet vent because of smooth water flowing and passing the wastewater. Moreover, the ground floor toilet needs a 2-inch vent pipe which you also need to keep in mind.

So, what size vent pipe for the toilet or ground floor toilet? Well, you can guide your plumber to use a 1.5″ to 2″ vent pipe size so that your toilet pipe is properly vented.

FAQs (Frequently Ask Questions)

Q: Will a toilet work without a vent?

Answer: Without using a vent, you will still install the toilet, but you may face some problems in the near future. You will face bad smells, water leakage, plumbing, and other problems. So, it would be better for you to use a toilet which comes with a vent system.

Q: How do I know if my toilet is not vented?

Answer: You will get some signs to understand whether the toilet is vented or not. First of all, if you find that your toilet bowl water occurring bubbles, you may understand that the toilet is not come with vented.

Q: How important is the vent for the toilet?

Answer: It is very important to vent a toilet to avoid many problems and get advantages. If the toilet doesn’t come with a venting system, you will face a bad smell, leakage, building and painting problems, as well as lots of plumbing problems.

Q: Can a toilet flush without a vent pipe?

Answer: Yes, it is working, but you need to use an extra valve such as Air Admittance Valve, well-known as a cheater vent. But, it is suitable for you to vent the toilet even if your toilet does not come with a vented system.

To Sum Up

Note that the venting system is not mandatory for the toilet or shower sink, but it helps you to get lots of benefits. You can check out the above advantages and disadvantages to understand whether the vent for your toilet is important or not. You can also use an air admittance valve (cheater vent) as an alternative to venting the toilet.