Can You Identify Toilet Rough-In Measurements by Its Look?

Currently, families have increasingly high demands for bathroom renovations, and many users wish to replace their old toilets. So, can we determine the rough-in distance of a toilet just by looking at its appearance? Let's take a look.

一、How to Determine Toilet Rough-In Distance from Its Appearance

1、Since there is a certain deviation in the toilet rough-in distance, it is generally difficult to observe the toilet hole's distance visually. It is recommended to measure using a tape measure. Position one end of the tape against the wall behind the toilet and measure the distance to the center of the toilet's drainage outlet. This distance is the rough-in measurement.

2、The typical rough-in distances for standard toilets are 30 cm, 35 cm, and 45 cm, etc. If you're unsure how to measure, you can ask a professional renovation worker to help.

二、How to Measure the Toilet Rough-In Distance

1、Toilets are divided into two types based on the drainage method: horizontal and floor-mounted. Horizontal drainage can only accommodate a flush toilet, while floor-mounted ones can choose either a flush or siphonic toilet, depending on the pipe structure. The rough-in distance for horizontal drainage is generally 180 mm, while floor-mounted rough-in distances can be more complex, including 200 mm, 305 mm, and 580 mm, etc.

2、The rough-in distance for drainage refers to the distance from the underground water hole to the unfinished wall. For back drainage, you need to measure from the drain hole to the finished floor. Precise measurement is essential in this process. Industry experts remind us that toilets are usually installed after the wall and floor construction is completed, and the measurement error must not exceed 1 cm; otherwise, proper installation cannot be guaranteed.

3、The measurement method is simple: the distance from the center of the drainage pipe to the wall is the rough-in distance; the measurement method is the same for vertical drainage. When measuring, be sure to consider the thickness of the tiles. Manufacturers usually specify a rough-in distance of 400 mm; typically, the actual rough-in would be 380 mm, allowing a 20 mm thickness for the tiles. If the measurement reads 370 mm, note that the diameter of the drainage pipe is generally 110 mm, and the drain outlet diameter is about 70 mm, leaving 40 mm for adjustment in between.

In summary：That's all the knowledge about whether the rough-in distance can be determined from the toilet's appearance. If you need to know more information, please continue to follow our website, and we will provide more exciting content for you in the future.