You might think that buying a replacement toilet is pretty simple – find a toilet with the features you like, and one that looks nice, and press the ‘buy’ button. However, there are a few important considerations that will help you make a successful decision. One of these considerations is the toilet rough-in.
A toilet rough-in is the distance from the finished wall to the center of the toilet’s floor drain or waste outlet. The measurement is best made before the old toilet is removed. Measure the distance between the wall that is behind the toilet to the center of one of the bolts securing the toilet to the floor. The most common measurement for a toilet rough-in is 12 inches, but if you have a 14-inch model to replace, there are still high-quality options to choose from.
When buying a new toilet, your options will be a bit limited, but there are still some great models out there, including the models mentioned in this list.
Table of Contents
Our Top Picks
| Kohler Highline | ||
| American Standard Cadet PRO |
Rough-in Measurements Explained
If you are buying a new toilet, it’s essential to know what a rough-in is and how to properly measure it. The rough-in is a distance between the wall and the mounting holes on the flange. Toilets usually have 10”, 12”, or 14” rough-in, with 12 inches being the most popular in the US.
You can even replace a 14-inch rough-in with a 12-inch version, but you will end up with a 2-inch gap. However, you can solve the problem by installing an offset toilet flange. Also, you might need a new wax ring and mounting bolts when replacing your old commode with an updated model.
Difference Between Rough-ins
While most toilets have a rough-in of 10 or 12 inches, a 14-inch rough-in is less common. A 10-inch version is much slimmer since it has to allow for a shorter distance. On the other hand, 14-inch rough-in tends to be much bigger and longer, which can impact the overall style of your new toilet.
In most cases, if you have a compact bathroom, or if your house is older, you will find a 10-inch rough-in on your toilet. Also, there is a good chance that the bowl you choose will be round.
A 12-inch rough-is are the most common because it can fit toilets of almost any type and style. However, even though it’s the standard size, be sure to do proper measurements before buying a new commode.
Comparisons of the Our Top Picks
Reviews of the 4 Best 14-inch Rough-In Toilets
1. Kohler Highline K-3949-0 Toilet – Review Champion
- Flushing Score:
- Water Consumption: 1.28
- Bowl Shape:
- Flushing System:
- Flush Type: Single
- Style: Two-Piece
- Dimensions (sourced from manual): Toilet (31.6″ x 18.25″ x 30.75″), (14″), Seat Height (17.25″)See image with dimensions
Product Documentation
Customer Reviews
Last gathered: June 16, 2022
- Water-efficient
- Easy to install
- Seat and supply line sold separately
Summary of Recent Reviews
Buyers love the quiet excellence of this toilet option. As with most modern toilets, this also uses less water than older models, saving on your water bill over time. The elongated bowl is appreciated by customers for the additional comfort it offers.
2. American Standard Cadet Pro – Editor’s Choice
- Flushing Score:
- Water Consumption: 1.28
- Bowl Shape:
- Flushing System:
- Flush Type: Single
- Style: Two-Piece
- Dimensions (sourced from manual): Toilet (30.12″ x 17.37″ x 30.37″), (14″), Seat Height (17.5″)See image with dimensions
Performance Ratings
★ Easy to install – 5.0 out of 5
★ Value for money – 4.0 out of 5
* based on Amazon’s rating system
Product Documentation
Customer Reviews
Last gathered: June 16, 2022
- Durable parts
- EverClean surface
- Long warranty
- Install is slightly challenging
- Doesn’t come with a seat or supply line
Summary of Recent Reviews
Overall, customers like this compact, 14″ rough-in toilet. Some buyers needed to contact customer service and were very happy with the help they received, and successfully installing their toilets as a result. Customers mentioned the strong, effective flush – “works great and is easy to clean.”
3. Kohler Wellworth K-3947-0 Toilet
- Flushing Score:
- Water Consumption: 1.28
- Bowl Shape: Round front
- Flushing System:
- Flush Type: Single
- Style: Two-Piece
- Dimensions (sourced from manual): Toilet (29.62″ x 18.26″ x 28.74″), (14″), (15.5″)See image with dimensions
Take a look at our other Kohler toilets we reviewed.
Product Documentation
Customer Reviews
Last gathered: June 16, 2022
- Made from durable materials
- Powerful flush
- Trip lever can be installed only on the left side
Summary of Recent Reviews
Buyers were delighted about the quality of this one. They like the power behind this compact option – “It’s more specific to our need in a small bathroom closet with the lower profile and a 14” rough-in setback.”
4. Kohler Wellworth K-3948-RA-0
- Flushing Score:
- Water Consumption: 1.28
- Bowl Shape:
- Flushing System:
- Flush Type: Single
- Style: Two-Piece
- Dimensions (sourced from manual): Toilet (31.61″ x 18.26″ x 28.75″), (14″), (15″)See image with dimensions
Product Documentation
Customer Reviews
Last gathered: June 16, 2022
- 5-year warranty
- Comfortable
- Slightly expensive
Summary of Recent Reviews
While there are limited reviews, customers seem to like this model. The flush is effective and specs are accurate.
Buyers Guide for 14-Inch Rough-In Toilets
Here are seven factors to consider when buying a new 14-inch rough-in toilet.
✓ Water Consumption
There are two advantages of choosing a high-efficiency toilet – monthly water use and care for the environment. Considering the fact that toilet use is responsible for 30% of residential water consumption, you can see where this is important to your monthly budget. Many states also require installation of high-efficiency toilets, because with widespread use they reduce the need for water restrictions during drought conditions.
Take a look at the difference between 1.28 vs. 16 GPF toilets.
✓ Bowl Shape
Toilet bowl shapes can be either round or elongated, and both of these have their advantages. Elongated bowls are more comfortable, but they take more space. In some situations, even a few inches can be too much. That’s why round bowls are excellent for smaller bathrooms.
✓ Toilet Price
Buying a new toilet is a long-term investment, and price is always a primary factor to consider. It would be helpful to prioritize the features that are important to you, and then you can make a smart decision. If you want a toilet with LED nightlights, remote controller, seat heat adjustment – go for it! It will obviously cost more, but might be worth the extra money.
✓ One-Piece vs. Two-Piece
Both styles have their pros and cons. One-piece units look stylish and luxurious, making them ideal for modern bathrooms. They are also easy to maintain since there are fewer nooks and crannies susceptible to dirt. Since they come as a single piece, they almost never cause leaking. On the other hand, if a one-piece toilet breaks, you need to replace the whole unit. They are also heavier and more difficult to carry to the installation location.
Two-piece units are usually cheaper, but connecting the tank and the bowl increases installation time. They are also larger, more susceptible to dirt, and not ideal for smaller bathrooms. So, if you are looking for a cheaper solution, a two-piece unit is a way to go.
You may be interested in our reviews of one-piece toilets.
✓ Glazing Finish
Since we use toilets every day, glazing is important to consider. If the unit has a smooth surface, the waste will much easier go down and won’t stick. It means that you will have to do less maintenance, but also, the toilet will be more hygienic without all the possible bacteria and mold. If you are looking for a unit with a high-quality glaze, search for labels such as EverClean (American Standard), Cefiontect (TOTO), and Sanagloss (TOTO). These have been tested many times over the years.
✓ Accessibility
Accessibility is another essential thing to consider, especially if you live in a family with young children, elderly, or physically challenged people. If you want to be sure that your toilet doesn’t lack accessibility, look for an ADA-compliant unit. These usually have slightly taller bowls, which release the tension on joints and muscles while you are sitting. They also have elongated bowls, for superior comfort.
Read more about our ADA compliant toilet reviews.
✓ Trapway
Not all units have the same trapways, but what is the difference? With a large trapway, the toilet can push more waste, but that’s not always necessary. Units with larger trapways can be more expensive, but a standard trapway is normally more than sufficient for a residential toilet.
Measuring Tips
There are four accurate measurements before you can install your 14-inch rough-in toilet.
1. Toilet Flange and Back Wall Distance
While taking measurements from behind the wall, be sure to center the toilet flange at a distance of 12 inches from the wall. This usually applies to most toilets with this size of a rough-in, but check the specifications and measure accordingly.
2. Center of Unit and Sidewall Distance
This measurement shouldn’t be less than 15 inches because it’s the distance between your new toilet and the sidewall, or any other fixture, on both sides. For example, if the tub is next to your commode, it should be at least 15 inches away or more.
3. Front of the Toilet and Other Fixtures Distance
This measurement might vary between countries since it mainly relies on local plumbing codes for standard distance. If plumbing requirements in your area are under IPC, you will need, at a minimum, 21 inches of clearance. However, if you live in a city that is under UPC, you will need at least 24 inches instead. Remember, this is the amount of space between the front-most side of your toilet and any wall, door, or other similar obstruction.
4. Water Supply Line Placement
Find the center of the closet flange and measure six inches to the left. Then, go seven inches up above the floor, and that is your ideal position for the water supply line. If the water line comes too high or too low, you might need to do additional repairs, which might turn out very ugly. You can even go six inches above the floor, but not lower than that.
You may be interested in our guide about toilet measuring tips.
Frequently Asked Questions
Should a Toilet Tank Directly Touch the Wall?
It depends on the rough-in of the unit. If it’s smaller, you will have some space – if it’s not, then it may touch the wall.
Can I Change the Rough-in Measurement of My Unit?
Usually, when you replace a toilet, it should have the same rough-in measurement as the previous unit. However, if the rough-in is larger, you will need to modify the plumbing configuration. The only other option would be to move the wall.
What Is the Minimum Clearance in Front of the Toilet?
As a rule of thumb, it should be at least 21 inches. There shouldn’t be any wall or fixture within that distance. Also, the distance shouldn’t be less than 24 inches when it comes to the Uniform Plumbing Code. These are, however, the minimal measurements; the distance can be much greater than that, as long as it’s comfortable to use the toilet.
Final Thoughts
Although 14-inch rough-in toilets are less common, you will be satisfied with any unit from the list. These are all manufactured by popular companies and made from top-quality materials, so decide what features are important to you and get started with the installation!