Making sure that the toilet flange is flush with the floor is an important part of every installation. The flange is the part that holds the toilet securely in place. If it is the wrong height, then the toilet might not have the right seal to prevent leaks and other problems.
Improper flange height is a common issue that can arise during bathroom remodels, toilet replacements or flooring changes. Here, we’ll help you understand the reasons for the correct flange height, along with what can happen if it is wrong and how our friendly plumbers can fix the problem
Quick Takeaways
- Toilet flanges should sit flush with the finished floor or within one-fourth inch above it.
- A flange that is set too low or high can cause rocking toilets, leaks or failed wax seals.
- Floor replacements are the number one leading cause of the flange height becoming incorrect.
- Spacer rings, repairs or flange extensions can fix problems with the height.
- Professional toilet installation includes making sure the flange height is correct before sealing the toilet.
What is a Toilet Flange?
The flange plays an important role in helping to secure the toilet to the floor. A properly installed flange connects the toilet to the drain pipe and creates a seal between the fixture and the sewer line.
Should a Toilet Flange Be Flush With the Floor
Ensuring that the toilet flange is flush with the floor is the industry standard for proper placement. The right flange height is essential for effective wax ring performance. Keep in mind that the subfloor and finished floor height can vary, which is why toilets can sometimes be at the wrong height following a bathroom remodel.
The Ideal Toilet Flange Height
An experienced plumber installs toilet flanges flush with the finished floor or slightly above. Being a fraction of an inch above the finished floor is acceptable because it still allows the wax ring to do its job. If the toilet flange is placed below the finished floor, problems can develop with the seal.
What Happens If the Toilet Flange Is Too High?
When the toilet flange is too high, you might notice the following problems:
- Cracked porcelain from over-tightening bolts
- Poor wax seal compression
- Rocking or unstable toilet
- Leaks around the toilet base
What Happens When the Toilet Flange Is Too Low?
Installing the flange too low can cause these problems, which can quickly create hazardous conditions in your bathroom.
- Failed or an incomplete wax seal
- Sewer gas smells
- Water leaking from under the toilet
- Hidden floor damage
Common Reasons Toilet Flanges End Up at the Wrong Height
Our professional plumbers follow the proper protocols to ensure that we install flanges at the correct height, but the one in your home might still get out of place due to the following reasons.
- Improper original installation
- New flooring installations without flange adjustments
- DIY repairs
- Bathroom remodels
- Older plumbing systems
How Plumbers Fix Incorrect Toilet Flange Height
Once we diagnose an improper flange height, we can use these strategies to create the correct placement.
- Flange extender rings
- Repair flanges
- Replace the flange
- Floor repairs or leveling
- Re-setting the toilet correctly
When to Call a Professional for Toilet Installation
Giving us a call when these situations occur can help you avoid problems with an improper toilet flange height.
- Flooring changes
- Replacing the toilet
- Seeing signs of leakage or toilet movement
- Having a cracked, corroded or misaligned flange
Frequently Asked Questions
A quick read through these common questions puts you a step ahead in figuring out toilet flange misalignment and height problems.
Should a toilet flange sit on top of the finished floor?
Yes, the ideal height for a toilet flange is flush with the finished floor.
How high above the floor should a toilet flange be?
The best height is flush with the finished floor or up to one-fourth inch above the surface.
Is it okay if the toilet flange is below the floor?
No, a toilet flange that is too low can create an improper seal that you’ll eventually notice by signs that can include water leakage and sewer odors.
Can I use two wax rings if the flange is too low?
No, using two wax rings can compromise the toilet seal and lead to leakage. Choose a wax ring that is the appropriate size, which could include an extra-thick one for toilets that sit low.
What causes a toilet to rock after installation?
Being at the improper height or on an uneven floor can cause the toilet to rock after installation. A flange that is loose or broken could also cause this problem.
Do flange spacers work long term?
Flange spacers can work for a long time when they are properly installed on a clean, undamaged flat surface. But, it is always best to have a professional plumber install a new flange that fits properly to achieve the longest-term results.
Can a toilet flange be moved or replaced?
Moving or replacing a toilet flange is possible, but it is best to avoid turning this into a DIY project. Professional plumbers know how to replace the toilet flange using techniques that guarantee safety and prevent problems in the future.
Is flange height checked during professional toilet installation?
Absolutely! Our plumbers prioritize making sure that the flange height is precise to ensure your continued satisfaction with our toilet installation.
Need a Toilet Installed the Right Way? Call the Punctual Plumbers
Proper flange height and sealing are critical for preventing leaks and hazardous sewer gases from entering your home. When something seems off, our team can conduct a professional inspection of your home’s toilet, including leak testing. If necessary, we’ll level the toilet and make sure everything is in the right place.
Schedule a toilet installation or inspection with our team at Benjamin Franklin Plumbing in Gainesville, FL, today. Our punctual plumbers will prioritize making sure that your toilet is flush with the floor and leak-free.