Introduction:

When renovating a bathroom or simply replacing an old toilet, it’s crucial to know the correct rough-in measurement for your new fixture. The rough-in refers to the distance between the wall behind the toilet and the center of the drainage pipe. This measurement ensures you have enough space for a comfortable and functional fit. In this article, we will explore three simple ways to measure a toilet’s rough-in, which will help make your bathroom renovation a success.

Method 1: Using A Tape Measure

Step 1: Remove the Toilet (if present)

Before you begin measuring, make sure to turn off the water supply and drain the toilet. Unscrew the bolts holding the toilet to the floor, then gently lift it and move it out of your way.

Step 2: Measure from Wall to Drain

With your tape measure, find the distance between the finished wall behind the toilet (excluding any baseboards or molding) and the center of the drainpipe. This is your rough-in measurement.

Method 2: Use a Plumb Bob

Step 1: Set Up the Plumb Bob

A plumb bob is a weighted string used by professionals to ensure accuracy in measurements. Hang it from a level placed on top of your drainpipe, making sure it reaches down towards the floor.

Step 2: Measure from Wall to Plumb Line

Once set up, measure from the wall (excluding baseboards or molding) to where the plumb line touches the floor. This is also your rough-in measurement.

Method 3: Measure an Existing Toilet

If you’re replacing an existing toilet but don’t want to remove it completely, you can measure its rough-in by doing this:

Step 1: Locate Bolt Caps

Find decorative caps that cover bolts at the base of your existing toilet. They will be on either side of the fixture.

Step 2: Measure from Wall to Bolts

With your tape measure, measure from the wall (excluding baseboards or molding) up to the center of one of these bolts. Add about 2 inches to account for the distance between the bolt and the center of the drain. This gives you an approximate rough-in measurement.

Conclusion:

There are multiple ways to measure a toilet’s rough-in that cater to various skill levels and available tools. By taking careful measurements with a tape measure, plumb bob or by measuring an existing toilet, you will ensure that your new fixture fits perfectly in your bathroom renovation project.