How Much Space to Leave for Toilet Width: A Complete Guide

When installing a toilet, it is essential to pay attention to the width that needs to be reserved for the toilet. This width is not arbitrary and should be determined based on actual measurements. Here’s a guide on how much width to reserve for a toilet.

How Much Width to Reserve for a Toilet

Generally, it is suitable to reserve about 100 centimeters for the toilet width. However, the exact measurement can depend on the toilet's design and size. Therefore, before installing the toilet, it is important to determine the toilet style in advance. Accurate measurements can help ensure the right width is reserved, so make sure to measure before purchasing a toilet according to those measurements.

Considerations When Installing a Toilet

1、During installation, ensure that the connections of the toilet's water supply and waste outlet are tight to avoid any leakage. The base can be secured with silicone sealant to prevent cracks from moisture and possible repair difficulties later.

2、The toilet should be installed correctly without any modifications, as this may compromise its vacuum suction and affect waste disposal efficiency. If the toilet doesn't align with the drainage hole, it is best to replace the toilet. Currently, standard toilet rough-in measurements are 300mm and 400mm, so remember to deduct the thickness of the wall tiles when measuring.

3、You can choose the rough-in size according to your preference. It is advisable to reserve about 20mm, making the actual distance from the center line of the toilet drain to the wall 320mm or 420mm. An error of about 10mm is considered acceptable for installation.

4、Most toilets on the market have rough-in sizes of 30cm, 35cm, or 40cm. If you measured before installing the tiles, be sure to reserve an additional 2cm, so the toilet's rough-in aligns correctly.

5、Typically, the rough-in size for household toilets is around 30cm, with the drain opening's diameter being 11cm. If the rough-in size is between 27.5cm to 37.5cm, you can opt for a 30cm rough-in toilet. For a rough-in size between 37.5cm to 45cm, a 40cm rough-in toilet would be appropriate.

In summary：that's all about how much width to reserve for a toilet. I hope this information helps everyone. If you want to learn more related knowledge, you can refer to the information on the Hawkrown.