Does The Toilet Flange Go On The Top Of The Finished Floor? Here’s The Truth!

When installing a toilet, one crucial question arises: “Does the toilet flange go on top of the finished floor?” Understanding the correct placement of the toilet flange is essential for a leak-free and durable bathroom. This comprehensive guide will delve into the intricacies of toilet flange placement, providing clear instructions and addressing common misconceptions.

What is a Toilet Flange?

A toilet flange is a metal or plastic ring that provides a secure base for mounting the toilet bowl. It is typically anchored to the subfloor and extends above the finished floor surface. The flange has a bolt pattern that aligns with the holes in the toilet base, allowing the toilet to be securely fastened.

Placement of the Toilet Flange

The answer to the question “Does the toilet flange go on top of the finished floor?” is a resounding yes. The toilet flange should be installed on top of the finished floor, not on the subfloor. This placement ensures that the toilet bowl sits at the correct height and is level with the floor.

Reasons for Top-of-Floor Placement

There are several reasons why the toilet flange should be installed on top of the finished floor:

• Proper Toilet Height: Placing the flange on the finished floor ensures that the toilet bowl is at the correct height for comfortable sitting and use.
• Level Installation: Installing the flange on the finished floor helps prevent the toilet from being tilted or uneven, which can lead to leaks and instability.
• Wax Ring Seal: The wax ring that creates a watertight seal between the toilet bowl and flange must be compressed properly. Placing the flange on the finished floor allows for the necessary compression of the wax ring.
• Code Compliance: Building codes in many areas require the toilet flange to be installed on top of the finished floor surface.

Steps for Installing the Toilet Flange

1. Mark the location of the toilet bowl on the subfloor.
2. Cut a hole in the subfloor using a hole saw.
3. Insert the toilet flange into the hole and secure it to the subfloor with screws or bolts.
4. Apply a bead of plumber’s putty around the base of the flange.
5. Install the finished flooring around the flange.
6. Once the flooring is complete, set the toilet bowl on the flange and bolt it down.

Common Misconceptions

Misconception 1: The toilet flange should be installed on the subfloor.

This is incorrect. The toilet flange should be installed on top of the finished floor to ensure proper toilet height, level installation, and a watertight seal.

Misconception 2: The toilet flange can be installed at any height.

The toilet flange should be installed at the correct height to accommodate the toilet bowl and wax ring. Improper height can cause leaks or toilet instability.

Misconception 3: The toilet flange can be installed without plumber’s putty.

Plumber’s putty is essential for creating a watertight seal between the toilet flange and the finished floor. Skipping this step can lead to leaks.

Wrap-Up: Ensuring a Leak-Free and Stable Toilet

By understanding the proper placement of the toilet flange on top of the finished floor, you can ensure a leak-free and stable toilet installation. This guide has provided comprehensive instructions and addressed common misconceptions, empowering you to tackle this plumbing task with confidence.

What You Need to Learn

1. What is the standard height for a toilet flange?

The standard height for a toilet flange is 3/4 inch above the finished floor surface.

2. Can I use a different type of seal instead of plumber’s putty?

While plumber’s putty is the most common and recommended seal for toilet flanges, you can also use wax rings with a built-in seal or silicone caulk.

3. What should I do if the toilet flange is damaged or broken?

If the toilet flange is damaged or broken, it should be replaced immediately to prevent leaks and ensure the safety and stability of the toilet.