Can you replace a 12-inch rough-in toilet with a 10-inch rough-in toilet?

A toilet with a 12-inch rough-in will definitely not fit into a space with a 10-inch rough-in, but a toilet with a 10-inch rough-in actually has extra space in a 12-inch rough-in space.
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Does rough in size matter for toilets?

An accurate rough-in size ensures there will be enough space between the drainpipe and the wall for the backside of your toilet and the toilet tank of your toilet to fit when installed. When purchasing a new toilet, measuring and knowing the correct toilet rough-in should be your number one priority.
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What is the standard rough in size for a toilet?

The standard rough-in is 12 inches, though you may encounter 10-inch and 14-inch rough-ins in older homes. You should find the rough-in measurement in the new toilet's product information.
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Does American Standard make a 10-inch rough in toilet?

American StandardReliant 10 in. Rough-In 2-Piece 1.28 GPF Single Flush Round Toilet in White, Seat Included.
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Does Kohler make a toilet with a 10 inch rough-in?

Highline™ Comfort Height™ Two-piece elongated 1.28 gpf chair height toilet with 10" rough-in.
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How To Measure a Toilet / What Size Toilet Should I Buy?



How do I know if my toilet is a 10 or 12 rough?

If your toilet has four bolts rather than the standard two, you'll measure to the center of the rear bolts. The standard rough-in measurements are 10, 12 and 14 inches. If your measurement is in between these intervals, round your number down to the nearest standard measurement.
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How far should a toilet be from the wall?

Most codes require at least 15 inches (measured from the center of the toilet) from any side wall or obstruction and not closer than 30 inches center to center to any other sanitary fixture. (The NKBA actually recommends 32 inches.) There should be at least 24 inches of clear space in front of a toilet or bidet.
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Are all toilets interchangeable?

As far as the overall size of toilet itself, getting the proper rough will allow the toilet to fit the space. Toilet sizes vary beyond the rough though. Round bowls don't project out as much as elongated, and then there are variations within the round and elongated categories as well.
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What is comfort height on a toilet?

Seat Heights

Most often, they fall somewhere between 15” and 19”, with standard toilets coming in under 17”. However, chair height toilets, what Kohler refers to as Comfort Height® toilets, measure 17” or more.
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Are all toilets 12 rough-in?

Toilets are manufactured in one- and two-piece styles, and the standard measurement for both cases is a 12-inch rough-in. There are also 10-inch and 14-inch rough-ins, but these are less common.
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Should a toilet tank touch the wall?

There is no hard-fast rule about whether a toilet should touch the wall, as it is a matter of personal preference. Some people are okay with a toilet tank's top touching the back wall, while others desire a minimum of one inch of space between the commode and the back wall.
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Are all toilets standard size?

Standard toilet dimensions are typically between 28–30" deep, roughly 20" wide, between 27–32" high, and have a rough-in between 10–14". Now you can find the perfect toilet.
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How do you measure toilet rough opening?

The rough-in measurement of a toilet refers to the span between the wall behind the toilet and the center of the waste pipe. To measure the rough-in for your toilet, measure from the wall behind the toilet to the middle of the bolt caps (the caps holding your toilet to the floor).
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Does toilet tank size matter?

Toilet tank sizes vary depending on the type of toilet you have. Toilets come with one of three flushing systems; dual flush, gravity, and pressure-assisted. Generally, toilet tank sizes are universal within these flushing system categories, unless you have a custom toilet.
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Are all elongated toilets the same size?

A round toilet bowl will measure approximately 16 ½” in length. An elongated bowl is approximately 18 ½” in length. Based on your measurement, order the appropriate seat – round or elongated – for your bowl. Our seats are designed to fit most manufacturers' round or elongated bowls.
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Which is better 1 or 2 piece toilet?

One piece toilets are typically heavier and easier to clean, and there's less space for bacteria to grow. Because two piece toilets feature a detachable tank, they're more customizable for preferred styles and heights. Both styles can include bells and whistles like bidet attachments or low-flow energy saving.
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How far can you move a toilet from the stack?

If your waste line has a diameter of 3 inches, you can place the toilet within six feet of your stack. The toilet can also be as far as 10 feet from your stack, if the diameter of the waste line is 4 inches.
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What is the best toilet height?

Toilet Height

Standard-height rims are 14- to 15-inches from the floor and should work well for shorter people. If you're taller, consider chair height toilets that have a toilet seat height of 17-inches or more.
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Can you replace a toilet without replacing the floor?

They often ask if they should remove the toilet before installing a new bathroom floor. While it is possible to install a new linoleum or ceramic tile floor without removing the toilet, it is not recommended and actually can increase the labor involved in the project.
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Do toilets have different size holes?

Not every toilet requires the same size hole, and clearances also vary, but there is a standard size and placement that works for most models.
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Should there be a gap between toilet tank and wall?

Generally, a 1-inch gap between the back of a toilet and the wall is normal. Building codes require 15 inches from the center of a toilet to the back of a wall, resulting in a one-inch gap. If there is more than a 1-inch space, we recommend using an offset flange.
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Why is there a gap between toilet and wall?

The problem: old toilets had larger tanks so it was standard to place the drainpipe in the bathroom floor 12" from the wall-- this would allow room for the old, larger tank to fit right up against the wall.
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