Can you change a toilet rough in?

Asked By: Leonila Tsvei | Last Updated: 24th June, 2020
Category: family and relationships daycare and pre school
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Ideally your replacement toilet should have the same rough-in as your old one. A smaller one will fit, though any items stored on top of the tank may tend to fall behind the toilet. A larger one won't fit at all unless you change your plumbing or move the wall.

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Similarly, how do you rough in a new toilet?

Cut a hole in the subfloor just large enough for the bottom part of the toilet flange to sit. The flange rim will be fastened to the finished floor later. The center of the toilet flange should be 12" from the finished wall (add a 1/2" for drywall if measuring from the framing).

Beside above, how far from the wall should a toilet be rough in? Standard drywall is 1/2 inch thick, so the plumber should set the toilet flange at least 15-1/2 inches from the center of the flange to the wall framing. The standard distance from the back wall is 12 inches, or 12-1/2 inches from the center of the flange to the wall framing.

Similarly, can you replace a 14 inch rough in toilet with a 12 inch rough in toilet?

Any 12" toilet will work for a 14" rough. If you want to pull the bowl back 2", then there is only one method.

What is the difference between a 10 inch and 12 inch rough in toilet?

Different Rough-in Measurements A 10-inch rough-in is the usual measurement installed in older homes. However, the 12-inch measurement is the standard for modern toilet plumbing. The 10-inch rough-in measurements are still sometimes found in homes, and a lesser number of toilets are normally available for them.

29 Related Question Answers Found

Can a toilet and shower share the same drain?

Your shower drain can connect to the toilet drain, but it cannot connect to the toilet trap arm. So if your "main drain connection" is also the vent for the toilet, the line from the closet flange to the main drain connection is trap arm and the answer is no, the shower cannot tie in here.

What is rough in toilet size?

A toilet's rough-in refers to the measurement dimension from the finished wall to the center of mounting holes on the floor flange. Toilets are typically offered in either 10 inch, 12 inch, or 14 inch rough-ins. The 12 inch rough-in is by far the most common in the US.

What does 12 toilet rough in mean?

The toilet rough-in refers to the distance from the finished wall to the center of the toilet's floor drain or waste outlet. Most toilets have a rough-in of 12 inches, although it's not uncommon for older homes to have an unusual size such as 10" or 14".

Can two toilets share the same drain?

Most houses have more than one toilet, and if they are on the same side of the house, their waste lines can usually tie into the same stack. If they are on opposite sides, however, each may need its own stack. Since the stacks must be vented, this would mean two vent openings on the roof.

How do you lay out rough plumbing?


Steps for Roughing in your Plumbing:
  1. Step 1)Mark Key Locations. Determine where all the toilets will be and mark its center on the wall and measure out 13 1/2 inches from that point.
  2. Step 2) Cut the Drain Hole.
  3. Step 3) Drain Pipe Installation.
  4. Step 4) Supply Line Installation.

How much does it cost to rough in plumbing for a bathroom?

Rough in Plumbing Costs for a New Construction
Rough in costs range anywhere from $7,000 to $15,000 for an average size home of roughly 2,300 square feet with 2 or 3 bathrooms. It is $600 to $1,600 per fixture with final costs ranging from $1,500 to $20,000.

How do you relocate a toilet?

Moving your Toilet Waste Flange
Turn off the water supply line to the toilet and flush the toilet empty. Place a large piece of plastic down where you will place the toilet while working it will still have residual water in it and it will leak. Remove the flange caps then unbolt the toilet from the floor flange.

How much does a plumber charge to replace a toilet?

The average cost to replace a toilet is generally between $122 and $228 but varies according to the type of toilet and the conditions of each job. The average installation takes a plumber 2 to 4 hours at $65 per hour. If you're replacing an existing toilet, add $30 to $50 to remove your old toilet.

How do you tell if a toilet will fit?

If your existing toilet has four bolts, measure to the center of the back bolts. This measurement is known as the rough-in measurement. For a standard toilet, the rough-in measurement should be between 11 inches and 13 inches. Keep this measurement handy when you go to purchase the replacement toilet.

Why would I want an elongated toilet bowl?


For elongated toilets, the consensus seems to be that they are much more comfortable for adults. The shape of the bowl is much better for men as well, giving them extra space where they need it most. They are a better option for small bathrooms because they don't take up as much space (from wall to front of toilet).

How do you secure a toilet to the floor?

Toilets should be caulked to the floor to prevent side-to-side movement that can break the wax seal (and to prevent splashes or overflows from puddling under the toilet and rotting the floor). DIYers often set the toilet and then apply a tiny bead of caulk along the outside edge.

What is a unifit adapter?

The Unifit adapter
The system includes an interchangeable part that replaces the lower half of the trapway, adapting the toilet to either a 10", 12", or 14" rough-in. Only TOTO uses the Unifit, and only on some of their models.

Are there any toilets with a 16 inch rough in?

When installed on a 16-inch rough-in it measures 31 inches from the front of the bowl to the wall. It take no more space than a normal 12″ rough-in toilet installed on a 12″ rough-in would take. Reason number two: Most other 14″ rough-in toilets from American Standard, Kohler etc. are more than 30 inches long.

Are all toilet bases the same size?

Average Toilet Size
There is not a standard footprint measurement for toilets because different models and styles have varying dimensions -- such as round toilet bowls versus elongated and pedestals being square or rounded.

How do you bolt down a toilet?


Hold the toilet upright over the flange and guide the bolts through the holes in the base as you lower it in place. Once it's on the floor, push down on the bowl to compress the wax ring. Place a plastic cap holder and a metal washer over each bolt. Screw on the nut and tighten it as much as you can by hand.

Where should a toilet be placed in a bathroom?

Tip: A standard toilet is 14 to 15 inches high from the finished floor to the top of the bowl (excluding the fold-down seat). Consider a higher measurement of 16 to 18 inches for your wall-mounted toilet if you plan on aging into your golden years.

What is the minimum clearance for a toilet?

The National Kitchen & Bath Association requires at least 24 inches clearance in front of a toilet. Moreover, the NKBA recommends 32 inches from the center of the toilet waste line to the center of that of any other sanitary fixture, although local codes may require only 30 inches.