How to Fix a Broken Toilet Flange

The toilet flange is a piece of plumbing equipment used to mount the base of a water closet to the floor of the bathroom by connecting the drainage system of the toilet to a drain pipe. It is by virtue of a proper functioning flange that the toilet can send out waste to a sewer efficiently without leaking.

The pipe-fitting equipment is usually made in various hub designs like ABS and PVC, which is sort of the most common material for flanges. However, there are other common materials you may find used in producing toilet flanges, including copper, aluminum, brass, etc.

What are the Requirements Needed to Fix a Toilet Flange?

Before thinking of rushing down to a store to get a replacement for your toilet flange, you might want to ensure you’re going for the right one. Hence, you should inspect the one that is broken by accounting for the material used, as well as its size.

This is necessary because toilet flanges are made over a range of materials, shapes, and sizes. Then the next things to consider are the tools you would require for carrying out the DIY project. Here is a list of some common requirements needed to fix the toilet flange:

  • Rags and newspapers
  • Adjustable wrench
  • Screwdrivers
  • Screws and bolts (sizes suitable for the flange)
  • Wax ring
  • Putty knife
  • Nose mask
  • Toilet Repair Kit

Steps for Fixing a Broken Toilet Flange

Once you have observed all the initial procedures needed for repairing for a broken flange, you can now go ahead with the step-by-step instructions on how to perform the job correctly. Please, make sure you do not omit any of the following processes as a minor mistake or ignorance may cost you to get a professional plumber.

Disconnecting the Toilet

The first step is to remove the hose that supplies water to the toilet flush valve, but you should make sure that all the water in the closet has been emptied. Begin by turning off the knob (valve) that controls the inlet of water to the tank.

Now, keep flushing the toilet until all the water in the bowl is emptied and you can dry out the remaining with a rag. Spread the newspapers or rags on the bathroom floor in a way that isn’t too far from the work area.

Easily detach the water supply hose from the toilet before proceeding to other disconnections. Afterward, you can now use the adjustable wrench to unbolt the toilet that is mounted to the floor. There are typically two bolts that hold down the toilet so you can remove them by unscrewing the nuts.

You might want to get someone to assist you in lifting the dismounted toilet due to its heavyweight. Lift the toilet straight up in order to allow it to leave the bolts that point upwards through the base its base with ease. Gently place the disconnected toilet in the area of the bathroom you covered with newspapers.

Removing and Replacing the Broken Flange

In this step, you will need to inspect the wax ring that supports the base of the standard toilet from the surface top of the flange to remain connected and observe that it’s not in bad condition. Use the putty knife to scrape off the debris (sticky chunks) from the wax ring then remove the screws that attach the flange to the ground with the aid of the screwdriver.

Now, you can remove the old flange and use the replacement you equipped earlier with the right specifications and material. Install your new flange, ensuring that there is no gap between the flange and the floor. You should also replace the bolts or screws that may appear deformed or rusty with the newer ones you have.

Reinstalling the Toilet

You should have the bolts sticking upwards again from the ground after you must have properly replaced the new flange. If your wax ring doesn’t look in good shape (it’s the usual state), replace it with the new wax ring, then carefully lift and align the toilet’s base with the bolts and place it down in a way that is sturdy to the ground. Screw the nuts back on the bolt and reconnect your hose to the tank. Do not forget to turn on the water supply knob.


The process for replacing a broken toilet flange is quite simple for an average adult and it helps one gain knowledge about the security of a toilet’s drainage system to a reasonable extent. Also, it can save you the stress of worrying about getting a plumber in time to come over and fix it which will cost you some money.

In essence, knowing how to fix a toilet flange is a perfect DIY project, as all you have to do is to follow the steps above carefully. However, you should check a guide on installing new toilets online in case you face any challenge or call a plumber better still.

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