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

The question of whether a toilet flange should sit atop a finished floor is a prevalent topic in the realm of plumbing and bathroom renovations. Understanding the proper placement and installation of the toilet flange is crucial for ensuring a secure and leak-free toilet connection. In this comprehensive guide, we will delve into the intricacies of toilet flange placement, addressing the question that has puzzled many homeowners and DIY enthusiasts: does toilet flange go on top of finished floor?

Understanding the Role of the Toilet Flange

A toilet flange is a metal ring that provides a secure base for mounting the toilet bowl. It is typically made of cast iron, brass, or plastic and is embedded into the subfloor, creating a solid foundation for the toilet. The flange has several bolt holes that allow the toilet bowl to be bolted down, preventing it from shifting or wobbling.

The Debate: On Top or Below the Finished Floor?

The placement of the toilet flange in relation to the finished floor is a subject of ongoing debate among plumbers and homeowners. There are two main schools of thought:

Option 1: Installing the Flange on Top of the Finished Floor

Advantages:

• Easier installation: Installing the flange on top of the finished floor is more straightforward, as it eliminates the need to cut into the subfloor.
• No need for additional materials: This method does not require any additional materials, such as a toilet flange extender.
• Quick and convenient: This approach can save time and effort during the installation process.

Disadvantages:

• May not be code-compliant: In some jurisdictions, installing the flange on top of the finished floor may violate building codes.
• Potential for leaks: If the flange is not properly sealed, it can create a leak path between the floor and the toilet base.
• May not be aesthetically pleasing: The flange may be visible above the finished floor, which some homeowners may find unappealing.

Option 2: Installing the Flange Below the Finished Floor

Advantages:

• Code-compliant: Installing the flange below the finished floor typically meets building code requirements.
• More secure: A flange embedded into the subfloor provides a more stable and secure base for the toilet.
• Concealed: The flange is hidden beneath the finished floor, creating a more aesthetically pleasing appearance.

Disadvantages:

• More complex installation: Cutting into the subfloor and installing the flange below the finished floor can be more time-consuming and challenging.
• May require additional materials: A toilet flange extender may be necessary to raise the flange to the appropriate height.
• Potential for damage: If the subfloor is not properly reinforced, installing the flange below the floor can weaken the structure.

Determining the Correct Placement

The decision of whether to install the toilet flange on top of or below the finished floor ultimately depends on several factors:

• Building codes: Local building codes may dictate the required placement of the flange.
• Floor type: The type of flooring material can influence the installation method.
• Toilet height: The desired height of the toilet bowl should be considered.
• Personal preference: Some homeowners may prefer the aesthetics or convenience of one method over the other.

Step-by-Step Guide to Installing the Toilet Flange

Once you have determined the appropriate placement for the toilet flange, follow these steps for a successful installation:

Materials:

• Toilet flange
• Toilet flange bolts
• Wax ring
• Sealant (if necessary)

Tools:

• Hacksaw or reciprocating saw
• Drill
• Wrench
• Screwdriver

Steps:

Option 1: Installing Flange on Top of Finished Floor

1. Cut a hole in the finished floor to expose the subfloor.
2. Place the flange over the hole and secure it with bolts.
3. Apply a bead of sealant around the base of the flange to prevent leaks.

Option 2: Installing Flange Below Finished Floor

1. Cut a hole in the subfloor to accommodate the flange.
2. Insert the flange into the hole and secure it with bolts from above.
3. Use a toilet flange extender if necessary to raise the flange to the appropriate height.
4. Finish the flooring around the flange.

Troubleshooting Common Issues

• Leaking flange: If the flange is not properly sealed, it can lead to leaks. Tighten the bolts and apply additional sealant if necessary.
• Loose flange: A loose flange can cause the toilet to wobble or shift. Tighten the bolts securely.
• Incorrect flange height: If the flange is too high or too low, the toilet bowl may not fit properly or may not be level. Adjust the flange height using a toilet flange extender or by cutting the flange shorter.

Final Thoughts: A Well-Informed Decision

Understanding the proper placement and installation of the toilet flange is essential for a successful bathroom renovation. By weighing the advantages and disadvantages of each method and considering the specific circumstances of your project, you can make an informed decision that will ensure a secure and leak-free toilet installation. Whether you choose to install the flange on top of or below the finished floor, proper installation techniques and attention to detail are crucial for a long-lasting and functional bathroom.

Quick Answers to Your FAQs

Q: Can I install the toilet flange on any type of flooring?
A: The type of flooring can influence the installation method. For example, installing the flange on top of a ceramic tile floor may require a special flange designed for tile.

Q: How do I prevent leaks from the toilet flange?
A: Ensure that the flange is properly sealed with a bead of sealant around its base. Tighten the flange bolts securely to prevent movement.

Q: What is the standard height for a toilet flange?
A: The standard height for a toilet flange is 1/4 inch above the finished floor. However, this may vary depending on the type of flooring and toilet bowl used.