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< Back to Project Guides Project Guide

How to Repair a Toilet Flange

Difficulty intermediate intermediate Difficulty Level
Time < 2 hours Under 2 Hours

Noticing a rocking or leaking toilet? This could mean you have a broken toilet flange. A broken flange can cause your toilet to move because it is no longer secured to the flange, which is anchored to the subfloor. The rocking can cause the wax seal between the toilet and the flange to break, allowing water to leak onto the substrate and the ceiling below when the toilet is flushed. This can be easily fixed in just a few steps using Oatey’s easy to use flange repair products.

Find out how to properly prep for toilet repair and further assess your broken flange by checking out our blog, How to Repair a Toilet Flange.

Remove broken flange Apply silicone Install new Johni-Bolts Install Repair Ring Secure Bolts Allow silicone to cure

What You'll Need For This Project

  • Oatey® Fix-it Flange Repair Ring
  • Drill 
  • Tape measure 
  • Oatey® Silicone Sealant 
  • Screws 
  • Caulk gun  
  • Towel

1. Remove broken flange

Remove the broken or corroded sections of the flange. 

remove broken flange

2. Apply silicone

Apply a liberal amount of 100% silicone sealant to the top of the remaining parts of the flange.

apply silicone to the broken flange

3. Install new Johni-Bolts

If existing ring slots are still in place, install new Johni-Bolts. Be sure the bolts are centered with the toilet flange opening and parallel with the wall behind toilet tank.  You can now skip the rest of this project guide and visit our guide on reattaching your toilet, How to Replace, Repair & Re-attach Your Toilet.

If the bolt slots are not in place, proceed to Step 4.

Insert new bolts

4. Install Repair Ring

Press the Oatey® Fix-it Flange Repair Ring down into the desired location for correct bolt alignment and secure the repair ring to the subfloor using appropriate screws or anchors.

Install the Oatey Flange repair ring

5. Secure Bolts

Secure Johni-Bolts to repair ring using supplied fasteners.

Secure Johni-Bolts to ring

6. Allow silicone to cure

Wipe off any excess silicone and allow time to cure.

Allow silicone to cure

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