How to Measure Your Toilet Dimensions for a Perfect Fit Every Time

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Toilet Dimensions: How To Measure the Rough-In

When you want to replace your toilet, getting the right measurements is crucial. Believe it or not, there are five toilet dimensions you need to know. That way, you can ensure the new one will fit snugly in your bathroom. If you?ve never done this before, start here. We?ll make it easy for you.

There are many other things to consider when you start shopping for a new toilet as well. For example, you?ll likely look at water-saving features and whether it fits with your d‚cor. You may even want it to match your sink. But first, you?ve got to make sure it fits.

If the toilet is still in place, the center of the flange should align with the rear bolts that keep the toilet attached to the floor. Measure the distance between one of the rear bolts and the back wall to find your toilet?s rough-in. The video below explains how to get the toilet dimensions for the rough-in? And what to do if the current length isn?t long enough.

There are two things to keep in mind when measuring the rough-in of a water closet:

Tiles and floor molding add thickness to the wall. Most tiles are 3/8? thick, but the thickness of floor molding varies between «? and 1.?

Tiles and floor molding add thickness to the wall. Most tiles are 3/8? thick, but the thickness of floor molding varies between «? and 1.?
You need to find the measurement between the center of the flange and the stud wall. You will need to add «? to account for the drywall.

A 12? rough-in is the most common dimension, but you can find rough-ins of 10 or 14? in older homes. Pay attention to the rough-in when checking the toilet dimensions of the unit you want to purchase. You won?t be able to install a water closet with a different rough-in.

You won?t need to measure the toilet?s rough-in if you are installing or replacing a wall-hung model. These toilets don?t have a flange and are connected to a regular plumbing pipe. In order to fit a wall-hung model, you?ll need to measure the height and width of this plumbing pipe.

If you?re doing a total remodel or building a new home, you can put the water supply line anywhere you want. Otherwise, it?s more economical to work with what you have. Place your tape measure at the center of the flange and run a parallel to the back wall. Mark the spot that is six inches away from the center of the flange along this line. This spot will roughly correspond to the outside of the base of the unit when mounted on the floor.

Draw a line that connects this spot to the back wall. The water supply line should be six or seven inches above the floor along this line. You need to place the water supply line high enough to get clearance from the base trimming. The water supply line is protected by a small flange, so you need to allow enough clearance for the flange as well.

Here?s a video that explains the water supply line and how to replace it. Older homes may have a brass or lead pipe instead of the more flexible modern ones.

Water Supply Line Location

The side clearance of a toilet is something to take into consideration when remodeling a bathroom or shopping for a new toilet. You need enough clearance to use the WC comfortably and to meet building codes. You need to have at least 15? of clearance on each side of your toilet to meet building codes. There are no local variations for this minimum requirement. This means you can?t install your toilet closer than 15? away from a wall, bath fixture, or any other kind of obstacle.

Keep in mind that a 15? clearance is the bare minimum. You can install a toilet further away from the wall or bathroom vanity for comfort. Be careful not to install your WC unit too far away from the wall where you will hang the toilet paper dispenser. It would also be best to limit the side clearance to 15? if you want to install a grab bar on one side of the toilet.

How Much Clearance Do You Need On The Sides Of Your Toilet?

The side clearance of your toilet is something to consider when choosing the bowl shape. If you currently have 15? of clearance on either side of your toilet, measure the width of the bowl at its largest point to get an idea of the toilet dimensions you should look for when shopping.

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