In Baton Rouge and across South Louisiana, high humidity and foundation shifts can cause changes in flooring, affecting bathroom fixtures. Even a small rise or fall in the flooring at the base of the toilet can affect the toilet's flange height, potentially causing leaks or instability.
That’s why setting the proper toilet flange height is one of the most important aspects of toilet installation or replacement. Knowing how to adjust the toilet flange height can safeguard the subfloor and create a watertight seal.
AccuTemp is staffed by plumbers specializing in a full range of bathroom plumbing services in Louisiana. We also offer toilet flange adjustment for new installations and remodeling projects.
What Is a Toilet Flange & Why It Matters
The toilet flange or closet flange connects the toilet to the drainpipe below the floor. Typically made of metal or PVC, it’s fastened to the floor with screws or bolts that keep the toilet secure.
The flange prevents wastewater from leaking out from underneath the toilet. If it’s too high, the toilet may wiggle and not be securely sealed. If it’s too low, the wax ring won’t provide sufficient compression to achieve the necessary watertight seal. Both scenarios can result in moisture that can damage the subfloor and encourage mold growth. This is a frequent concern in Baton Rouge, Louisiana, given the humid conditions.
But with a properly installed flange, the toilet base is securely connected to the waste pipe below. Therefore, the toilet area stays dry and wastewater remains underneath where it belongs.
The Optimal Height for a Toilet Flange
When determining the ideal adjustable toilet flange height, the general rule-of-thumb is to position the top of the flange about ¼” above the finished floor, not flush with it. This is crucial because the higher flange seating makes it easier for the wax ring to compress uniformly against it when tightened, creating an airtight seal.
Homeowners in South Louisiana often encounter issues after flooring installation, especially when using tile or vinyl planks. This is usually caused by changes in the flooring’s thickness while the flange placement remains the same. When this happens, extenders and shims can be used to adjust the toilet flange height.
Tools & Materials You’ll Need
If you plan on adjusting your toilet flange yourself, you’ll need the following tools and materials:
- Adjustable wrench or pliers: Use this to tighten the bolts in the flange and secure the nut to the flange.
- Utility or flush knife: Used to trim wax or cut away old caulk.
- Silicone caulk: This seals the base of the toilet and prevents leaking.
- Toilet shims: You’ll need these to level the toilet if the flooring is uneven.
- Wax ring or foam gasket: Use this to create a watertight seal between the toilet and the toilet flange.
If the connection between the toilet and the flooring is too low, you can use a flange extender kit to raise the toilet’s height.
5 Steps to Adjust Toilet Flange Height
Take the time to read through these steps and understand their implications. Doing so will ensure a properly installed flange without risk of leaks.
- Measure the flange height correctly: Remember, the flange should be about ¼ inch above the finished floor.
- Secure the toilet bolts: Before you set your toilet in place, make sure the bolts are secure. If they’re loose, the toilet may rock after you bolt everything down.
- Wax ring: Install the wax ring or foam gasket, ensuring it’s even with the flange. Set the toilet in place with the mounting holes aligned with the bolts. You can then apply a light downward pressure to set the wax.
- Leveling & shimming: Once the toilet is in position, test the toilet for movement. If the base rocks, shim under the toilet to stabilize it. Cut away any visible shim material with a utility knife.
- Caulk: Apply a neat bead of caulk around the base of the toilet. Use just enough to ensure a secure seal and a tidy appearance.
After completing these steps, reattach the water line, flush the toilet, and check for leaks around the base.
What to Do If the Flange Is Too Low or Too High
As mentioned previously, you can use a flange extender kit to elevate the flange if it’s too low. These plastic rings are designed to fit over the existing flange and raise their height to the desired level. You may also use wax rings, but these are usually more likely to leak.
A flange that’s too high can cause the toilet to wobble and compromise the seal. It may be necessary to trim the flange to the correct height but remember to measure it carefully to ensure a tight seal.
In Baton Rouge, many older homes have shifting foundations or rotting subfloors, which can cause the flange to pitch or knock it out of alignment. In severe cases, the flange may need to be removed, cleaned, and re-fastened with corrosion-resistant screws.
AccuTemp’s Professional Bathroom Plumbing Services
For experienced DIYers, flange adjustment is relatively simple. But it’s generally best to let experts handle the job to avoid problems with leaks and improper sealing.
AccuTemp’s plumbing technicians can replace your toilet flange in Baton Rouge completely, applying the same precision and expertise it brings to every bathroom remodeling job. We can also perform leak repair services, plumbing maintenance, and even complete toilet installation!
Our technicians have years of plumbing experience throughout the Gulf Coast. Whether you want to ensure your flange complies with local plumbing codes or address leakage at the base of your toilet, don’t hesitate to contact us at (225) 244-8826. AccuTemp’s experts are always ready to help!
FAQs
Can I adjust the flange height myself, or should I hire a pro?
An experienced DIYer should be able to adjust a toilet flange height with a few simple tools. But if the flange is broken, crooked, or installed too low below a finished floor, calling a licensed plumber is advisable.
What are the risks of a flange that’s too low or too high?
A low flange could result in eventual failure of the wax seals. This, in turn, could lead to leaks that can damage your flooring. On the other hand, a high flange can cause the toilet to rock, which could, again, cause the wax seal to fail.
Will trimming the flange damage my toilet or cause leaks?
Not if you do it right. An experienced DIYer knows how to use the proper tools to ensure even compression of the wax ring. When in doubt, call on AccuTemp to determine the best solution for adjusting your flange or replacing it if necessary.
