How to Repair a Cracked Toilet Flange

Toilet flanges are essential pieces of hardware that connect the toilet to the floor. Unfortunately, they can crack and cause leakages, leading to an unpleasant smell and an increase in your water bill. Here we will explain how you can repair a cracked toilet flange quickly and easily.

Tip: best tips for using a plunger

What is a toilet flange?

A toilet flange is an essential piece of hardware in your bathroom – it connects the base of your toilet to the floor. It serves as an anchor for the pipes connecting to your bowl and prevents water from spilling out onto the floor when flushing. It is usually composed of metal or PVC plastic.

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Tools & Materials You’ll Need

  • Adjustable Wrench
  • Hand Saw
  • Screwdriver
  • Replacement Toilet Flange 
  • Silicone Caulk
  • Water Supply Shutoff Valve
  • Replacement Wax Ring
  • Plunger/Flush Toilet

Step 1: Turn Off the Water Supply and Unscrew Hose

It is essential that you turn off the water supply so that there are no further issues or accidents while working. You will also want to unscrew the hose that leads from the tank to empty out all remaining water within.

Step 2: Remove the Toilet and Any Remaining Wax Ring Matter

Using an adjustable wrench, begin by removing any bolts attaching the base of your toilet to its flange and then carefully lift it off before setting aside for later reattachment. If any wax ring matter remains on either surface be sure to remove this entirely using hands/tools like screwdriver or putty knife. 

Step 3: Remove Old Flange & Clean Area Around Sewer Drain

With toilet removed and area cleared of old wax ring matter it should now be easier to access old flange more easily – if needed use adjustable wrench again here too, if necessary, when removing mounting bolts from sides before taking away entire piece itself. Afterwards take some time cleaning up area around sewer drainpipe too since this is often place where wax will be stuck.

Step 4: Secure New Flange to Subfloor & Slide Mounting Bolts into Place

Now’s it’s time prepare new flange for installation – start by lining up edges correctly so they fit flush against subfloor before securely affixing it using screws/bolts etc and then slide mounting bolts into place along new flanges sides in order make later reassembly much easier!

Step 5: Add New Wax Ring & Center onto Flange 

Once everything is ready, center the new wax ring onto flange. Now add the bolts/nuts onto opposite sides of mounting holes in the flange.


In conclusion, repairing a cracked toilet flange isn’t too difficult if you have the patience and the proper materials. The Oatey brand is one of the best options available with respect to flanges, their cost is reasonable. With its easy-to-follow Oatey instructions, it makes repair quick and efficient. With this article’s guidance, and the right tools, you can easily fix your toilet flange and be back in business in no time.

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Aron Blake

I am the lead copywriter on Homezesty and the Webmaster. I have a lot of experience in home renovations and the creation of style. I enjoy writing and sharing my tips on how to create the best living environment. My Linkedin Profile, My Twitter Account

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