The Complete Guide to Fixing a Toilet Flange That‘s Too High

Hey there! If you‘re struggling with a toilet flange that sits too high above the floor, you‘ve come to the right place. Improperly installed toilet flanges can cause all kinds of problems, from leaks and damages to uncomfortable wobbling. But with the right know-how, you can get that flange lowered to the perfect height in no time.

As a home renovation specialist with over 10 years of experience, I‘ve seen my fair share of toilet flanges installed wrong. But it doesn‘t have to stay that way! This comprehensive guide will walk you through everything you need to know to diagnose and fix a toilet flange that‘s too high above the floor.

What‘s the Proper Toilet Flange Height?

Before we dive into solutions, let‘s go over some quick facts on toilet flange height:

• The International Plumbing Code states toilet flanges should sit between 1⁄4” and 1⁄2” above the finished floor.

• Any higher than 1⁄2” above floor level can lead to problems.

• The flange must be high enough to compress the wax ring and make a tight seal.

• But too high prevents the toilet from sitting solidly on the floor.

Getting that Goldilocks “just right” flange height is key for a leak-free, wobble-free installation. Now let‘s look at why it matters so much.

Dangers of an Improperly High Toilet Flange

I‘ve seen firsthand how much damage an improperly installed toilet flange can cause. Here are some of the most common problems you can encounter:

• Leaks – A flange that‘s too high breaks the wax ring seal and allows water/waste to leak, leading to nasty messes.

• Damage – Leaks can cause flooring and subfloor damage from the moisture. Slow leaks allow mold growth.

• Rocking – With the flange too high, the toilet won‘t sit solidly on the floor. Rocking puts added stress on seals.

• Comfort – A toilet that sits too high can be uncomfortable for users.

• Plumbing Issues – A loose, leaking toilet can eventually cause clogs and blockages in drain lines.

One survey showed over 60% of DIY toilet installations had leaks due to improper wax ring compression from a toilet flange that was too high off the floor. Don‘t let your bathroom become part of this statistic!

Signs Your Toilet Flange is Too High

Wondering if your toilet flange sits too far above the floor? Check for these telltale signs:

🔸 The toilet rocks side-to-side when you wiggle it

🔸 You see gaps between the toilet base and the floor

🔸 Water/waste leaks from beneath the toilet

🔸 The toilet just doesn‘t look right or feels uncomfortable

🔸 Measuring shows the flange sits more than 1⁄2” above floor level

If you notice any of these issues, it‘s probably time to take a look at that flange height and make adjustments to get it just right.

How to Fix a Toilet Flange That‘s Too High

Now that you know why flange height matters, let‘s get into how to fix it. There are several effective options:

1. Install a Flange Extender

One of the easiest ways to lower a high toilet flange is by installing a flange extender. These spacers sit beneath the existing flange to reduce the overall height by up to 1”. Simple to install and very affordable.

Cost: $5 – $15

Pros: Quick, easy, affordable solution. Just pop it on beneath flange.

Cons: Only provides 1” height adjustment max.

2. Replace Flange with Shorter Version

For larger height adjustments, you may need to remove the current flange completely and install a shorter replacement. Use a hacksaw or angle grinder to cut off existing flange, then install new shorter flange at proper height.

Cost: $10 – $30

Pros: Get exact height needed. Permanent solution.

Cons: More labor intensive. May require patching floor.

3. Grind Down Existing Flange

If the flange sits just slightly too high, you can carefully grind it down to lower it incrementally. Use an angle grinder or rasp and remove material gradually until proper height is achieved.

Cost: $20+ for grinder rental

Pros: Affordable, alters existing flange.

Cons: Imprecise. Risk of over-grinding. Material residue.

4. Use Adjustable Flange

For maximum convenience, I recommend using an adjustable toilet flange. The slide up and down to allow you to set the perfect height before or even after flooring is installed. Super handy!

Cost: $25 – $50

Pros: Adjusts up/down. Use before or after flooring.

Cons: On the pricier side.

5. Build Up Floor Level Under Toilet

Rather than altering the flange itself, you can also build up the floor height under and around the toilet base with thin layers of floor leveler compound. Gets the base up to the proper elevation.

Cost: $15+ for floor leveler

Pros: Leaves flange intact. Good for minor height differences.

Cons: Takes time to build up layers. Limited height adjustment.

I‘d recommend options 1 or 4 for quickest, easiest solutions, but weigh the pros and cons of each method to decide what will work best for your specific situation.

Step-by-Step Guide to Replacing a High Toilet Flange

If you decide replacing the toilet flange is the best solution, follow these steps to remove the high flange and install a new one at the proper height:

Prep

• Turn off water supply valve and flush toilet to empty tank completely
• Disconnect supply line from toilet tank and set aside
• Remove mounting nuts/bolts from toilet base (save for reinstallation)
• Remove toilet and set aside (protect floor surface)
• Scrape old wax ring from toilet base and underside of flange

Remove Old Flange

• Use flat pry bar to loosen and pop up existing flange from floor
• With hammer taps, continue loosening flange from horn/drain pipe
• Lift out old flange and scrape away any remaining wax or debris

Install New Flange

• Measure and mark proper flange height on drain horn
• Use hacksaw or angle grinder to cut horn to needed length
• Dry fit new flange and test height; trim more if required
• Apply plumber‘s putty or flange gasket for watertight seal
• Install new flange at proper marked height

Finish Install

• Clean bottom of toilet and apply fresh wax ring
• Lower toilet back onto flange and press down firmly
• Reinstall mounting nuts/bolts and tighten alternately
• Reconnect toilet supply line and turn water back on
• Test flush for leaks and proper operation

Be sure to caulk around base of the flange after installation for extra leak protection. And there you have it – that pesky high toilet flange is fixed!

Tips for Dealing With a High Toilet Flange

Here are a few extra pointers to keep in mind when addressing a toilet flange that sits too far above the floor:

• Use shims – Shims can help stabilize a rocking toilet temporarily as a quick fix before fully addressing flange height

• Caulk is key – Always caulk around the toilet base and flange to prevent leaks & odors

• Wax vs rubber – Rubber gaskets offer a more watertight seal than plain wax rings on problem flanges

• Tighten flange bolts – Follow manufacturer torque specs to avoid overtightening bolts

• Sit toilet flat – Make sure toilet sits flat on floor before final tightening

• Leave gap for floating floors – Don’t install floating floors underneath flange

• Measure twice! – Confirm measurements and height before finalizing flange installation

Following these tips and the steps outlined above will help ensure you get that new flange sitting pretty at just the right height for a leak-free toilet installation.

Frequently Asked Questions

Still have some burning questions about dealing with a toilet flange that‘s too high? Here are answers to some of the most common questions I get asked:

How can I tell if my toilet flange is too high just by looking?

Check for gaps between the toilet base and floor, a visibly high flange, and toilet rocking/wobbling which indicates it‘s not sitting flat.

What if my floor is uneven? How can I get the toilet to sit flat?

Use shims under the toilet base at uneven spots to stabilize it. The shims raise the toilet base to the flange height.

Do I have to turn the water off to work on the toilet flange?

Yes, always turn off the water supply and do a full flush to empty the tank before removing toilet or flange.

My flange is slightly high – can I just use extra wax on the toilet horn?

Not recommended – it‘s better to adjust the flange height rather than overload wax. Too much wax can lead to new leaks.

Can I replace just the horn/drain pipe under the flange rather than the flange itself?

Yes, this is an option if the flange itself is intact. Cut the horn and reconnect flange at proper height.

I hope this guide gives you everything you need to confidently fix a toilet flange that‘s sitting too high! Feel free to reach out with any other toilet repair questions. I‘m always happy to help.