rough plumbing for rear discharge toilet

Rough Plumbing for Rear Discharge Toilet – Flange to Waste Line!

Rear outlet toilets, sometimes referred to as rear discharge or rear outlet toilets, expel their waste via the structure of the wall behind them rather than the floor, as ordinary toilets do. They are particularly prevalent in condominiums where installing the “Rough Plumbing for Rear Discharge Toilet” is more difficult and costly.

You will learn about rear discharge toilets in this post, along with their benefits and necessary rough plumbing parts. Learn how to prepare and what to do in order to install the bare plumbing for the rear discharge toilet within the restroom.

What is a Rear Discharge Toilet and How does It Differ from a Standard Toilet?

The wiring “rough-in” for the back outlet tanks is located on the bathroom wall instead of the floor. How does a rear discharge toilet work? Instead of the more typical location just below the drain, they employ a toilet connection that is positioned at the rear of the bowl. 

Is rear discharge better than side discharge? For waste disposal, every toilet must be connected to a sewage line.

The toilet is often installed right on top of the plumbing rough-in, which is connected to a pipe that, in turn, links to the septic tank or the city wastewater system.

Gravity is used in this type of rough-in to help the waste flow more efficiently through the sewage systems.

What are the Advantages of Installing a Rear Discharge Toilet in your Bathroom

What are the Advantages of Installing a Rear Discharge Toilet in your Bathroom?

Back toilets that flush offer a bathroom with pristine paths, which gives it a more contemporary and sleek look.

The drains and plumbing fittings that are frequently left visible with ground flushing restrooms are also concealed with rear toilets that flush, adding to their aesthetically pleasing qualities.

Compared to floor flushing competitors, they frequently have more flushing capacity. Back flush toilets are extremely adaptable since they may frequently be put in locations when floor flush ones cannot.

Compared to their floor-flushed parallels, backflushed toilets are often a little bit thinner and more compact. This use of space efficiently might give the impression that your bathroom is larger.

What are the Essential Components Needed for Rough Plumbing a Rear Discharge Toilet?

  • Using the proper bit on a drilling machine.
  • PVC adhesive.
  • Broad socket wrench.
  • Flexible wrench.
  • Toilet P-trap connection with a rear output.

Toilets with a rear exit might be one or two pieces. Installation is simpler for a one-piece toilet but slightly more difficult with a two-piece potty. Installing the toilet tank comes after installing the toilet bowl.

You must manually choose the correct length for the project if you aren’t willing to take the chance of selecting an average roughly.

Where should the Rough Plumbing for a Rear Discharge Toilet be Located in the Bathroom?

The back outlet of the toilet serves as the rough piping for the back discharge toilet, keeping the completed floor level with the center of the planned pipe. The rear output toilet ought to sit 12 inches away from the rough-in. For a precise measurement, you may also get in touch with your local government.

Toilets with rear outlets are made differently from those with standard front outlets. The waste exit is in the rear of the toilet rather than on the side, as most toilets have.

How do I Plan and Measure the Rough Plumbing Layout for a Rear Discharge Toilet?

  1. In order to calculate the rough without effort, you must first locate the drainpipe.
  2. Second, find the distance between the bathroom wall’s bare spot and the aperture in the middle of the flanges. However, you may use a measuring tape to correct the issue if your wall has a baseboard.
  3. After confirming the measurements, you should receive a ballpark size of 10 to 14 inches for a rear output toilet.

The preliminary measurement for the toilet is quite easy. The three stages listed above must be correctly followed.

See the detailed instructions below for repairing the “Rear discharge toilet problems.”

  • Identify the placement of the toilet’s screws plus caps.
  • The toilet’s foundation bolts’ central distance from the wall is measured.
  • The measurements range from ten to fourteen inches.

These three criteria must be met in order to determine the rough’s typical dimension.

What Type of Pipes and Fittings are Required for the Rough Plumbing Installation

What Type of Pipes and Fittings are Required for the Rough Plumbing Installation?

Employ copper pipes of type “L” or “M” or, if your city’s codes permit it, “Schedule 40” PVC tubing. Use a 1/2-inch tube for connecting branches to individual lights and a 3/4-inch tube for all major lines of supply.

If you want to use ABS pipe, utilize Schedule 40. Ensure that every pipe that has been placed has a downhill slope of between 1/8 inch and 1/4 inch on every running foot.

Copper, PVC, CPVC, plus PEX are among the most widely utilized pipe metals within the plumbing industry. PVC, PEX, ABS, copper, galvanized steel, plus cast iron pipework are included in this list.

What are the Instructions for Rough Plumbing a Rear Discharge Toilet?

  1. Cut all water sources off.
  2. After threading the washers as well as nuts, slid the bottom of the tank bolts into the installation holes.
  3. Put a bathroom at the designated spot.
  4. Calculate the distance between the trash outlet’s rear.
  5. If required, use a hacksaw to cut the P-trap adaptor to the right length.
  6. The pre-drilled slots for mounting should be marked.
  7. Make mounting holes where they are needed.
  8. Insert the P-trap connection into the hub fitting after applying PVC or ABS adhesive all around it.
  9. The disposal outlet should be pushed into the P-trap connection as you slide the bathroom fixture into position.
  10. Via the fixing holes, place anchor bolts and washers that and torque into the pre-drilled sockets.
  11. Cover the anchor bolts with covers.
  12. A supply of water tubes must be connected.
  13. Put the toilet chair in position by setting it on over the basin and fastening it with the included bolts.
  14. Apply rubber caulk and tile grout on top of the toilet’s bottom to complete the setup.

How Do I Connect the Drain Pipe from the Rear Discharge Toilet to the Main Sewer Line?

Installing a particular flange on the sewage line is the first step in installing the bathroom with a vertical exit. To achieve this, he drills and marks the spaces for the wood dowels on the ground first. The flange is then installed and fastened on after that.

To stop odor, the o-ring may be greased with silicone. After that, a bowl for the bathroom is set on top of the flange and secured with nuts, followed by ornamental caps. The installation is finished.

How Do I Test and Check for Leaks in the Rough Plumbing System for the Rear Discharge Toilet?

  1. Locate the water meter.
  2. Don’t empty the bathroom fixture, and shut off any faucets that are now running.
  3. Take a reading from the dial and write it down.
  4. Test the meter again in fifteen to twenty minutes.
  5. A leak is present if the temperature has changed without any water being switched on or utilized.

If all else fails, add a few drops of dye to the bowl in the rear of your bathroom, and then wait 10 minutes. If there is color in the bowl, there is a leak. And, if your old toilet wiper is damaged or worn, think about changing it. Flushing afterward will help prevent stains.


Are there any Common Challenges or Issues During the Rough Plumbing Process?

The fact that back flushing restrooms aren’t yet as often manufactured or installed as traditional floor flushing types is one of their key drawbacks.

There are often fewer alternatives and higher prices for back toilets with flushing.

Backflushing toilets are thought to be a little less stable than versions that are fixed to the floor.

They must occasionally be modified since they are directly fastened to the walls, which can cause them to become loose as time passes.

Do I Need to Hire a Professional to Deal with Installation Process?

If you enjoy working on home improvement tasks, installing a toilet may be satisfying. However, if done incorrectly, you risk cracking your freshly installed toilet or increasing your water expenses due to a leak. It is usually advisable but not required to hire a professional.

Watch this one,

Video Credits – Prepper Mountain

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