Repairing Guides

how to repair rotted toilet flange

by Brando Waters Published 2 years ago Updated 1 year ago
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Solve the problem with a metal flange support instead. If you discover minor rot around the toilet flange, install a closet flange support under the flange to transfer the weight of the toilet to solid wood. If only the area directly below the flange is rotted, you can install a two-piece steel closet flange support.

Part of a video titled Broken Rusted Closet Flange Replacement Kits - YouTube
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So if you notice I put some masking tape to keep these bolts stable. Now some people will put strawsMoreSo if you notice I put some masking tape to keep these bolts stable. Now some people will put straws here to actually guide and have a better visual as you lower the toilet.

Full Answer

How to reseat a toilet with a high flange?

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  • How to change the toilet valve
  • How to Keep Toilet Smelling Fresh
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How to unclog a toilet with a flange plunger?

​Unclogging the Toilet Using a Plunger

  1. Keep Stagnant Water in the Toilet Bowl. Ensure there is pooled water in the toilet bowl. ...
  2. Pull Out the Flange of the Plunger. If your flange plunger has the capped part, make sure that it’s completely pulled out of the cap. ...
  3. Fit the Cup over the Hole of the Drain. ...
  4. Grab the Plunger with Both Hand and Push. ...
  5. Pull the Cup of the Whole On the Last Thrust. ...

More items...

How to reinstall a toilet flange?

  • Secure the new flange to the subfloor with the provided hardware. If no hardware was provided, use wood screws or cement screws, depending on your subfloor material.
  • Slide the toilet flange bolts into the new flange. Secure them with washers and nuts.
  • There’s no need to use an adhesive when installing a gasket-sealed PVC flange.

How do I remove the old toilet flange?

Removing an Old PVC Toilet Flange

  • Get your internal pipe cutter and insert the small circular saw into the drill chuck. ...
  • Use the internal pipe cutter to separate the flange from the waste line by cutting at the point where they meet, which are 3 to 4 inches from the flange’s ...
  • When you have cut through the whole flange, lift it straight off the subfloor.

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Can a broken toilet flange be repaired?

If just the flange is broken, you can use a convenient flange repair ring, like Oatey's Fix-It Flange Repair Ring, to securely reinstall the toilet. A product like this makes repairs easy because it can be installed above the broken toilet flange with four screws and silicone sealant.

Can you put a new toilet flange over an old one?

Apply a generous bead of 100% silicone caulk on top of the old closet flange. And to the bottom of the new closet flange extender. Either slide the new closet flange bolts into the old flange before adding the extender or add them after you adhere the extender to the old flange.

How much does it cost to replace a cast iron toilet flange?

If you plan to replace your toilet flange and wax ring yourself, all of the supplies you need will usually cost under $40. If you're using a cast iron flange rather than a PVC flange, your total installation cost will be closer to $75. The national average cost to have a plumber replace your flange is around $175.

Can a toilet flange be glued to floor?

This toilet flange is designed to glue on the inside of the pipe or expand inside the pipe. Leave the old toilet flange right in place and glue on the new one at the right elevation for the floor, if it's plastic. The flange should be sitting with the bottom edge flush with the top of the floor.

How much does it cost to get a toilet flange replaced?

around $145 to $165If your toilet is creaking or wobbling, you may need to replace the flange. For a plumber, replacing a toilet flange is a quick and easy job. Assuming no other complications pop up, you can expect to pay around $145 to $165 for this simple repair.

Should I caulk around toilet flange?

Caulk prevents a fouling area. If mop water, bathtub water, or a less pleasant “bathroom liquid” gets underneath the toilet, there is no way to clean it up. Caulking around the base of the toilet will prevent this from happening.

How do you remove an old cast iron toilet flange?

3:2321:54REMOVING & REPLACING a Cast Iron Toilet Flange - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo our first step is to drill out that lead all right i'm going to use my electric drill today aMoreSo our first step is to drill out that lead all right i'm going to use my electric drill today a cordless would work fine i'm going to start with a quarter inch drill bit.

How do you fix a broken toilet flange in concrete?

1:293:52How to Fix a Toilet - Cement Sub-Flooring Repairs - Part 1 of 2YouTubeStart of suggested clipEnd of suggested clipItself the second way to fix this problem is to cut out the damaged flanges metal ring leaving theMoreItself the second way to fix this problem is to cut out the damaged flanges metal ring leaving the ABS coupling and install an inside fitting flange. The reason this technique is suggested.

How do you fix a cast iron toilet flange?

6:4810:06How to Repair a Cast-Iron Toilet Flange | Ask This Old HouseYouTubeStart of suggested clipEnd of suggested clipThis is a device with a gasket right here and four Allen screws and when you tighten up those AllenMoreThis is a device with a gasket right here and four Allen screws and when you tighten up those Allen screws you actually make this gasket get bigger. So I'll make the seal on the inside of the pipe.

How do you glue down a toilet flange?

1:494:21Toilet Flange Installation on New Construction - YouTubeYouTubeStart of suggested clipEnd of suggested clipYou will need primer. And PVC cement begin by applying a liberal amount of primer to the outside ofMoreYou will need primer. And PVC cement begin by applying a liberal amount of primer to the outside of the closet flange.

Does a toilet flange need to be screwed to the floor?

Closet (toilet) flanges must be 1/4" above a finished floor. This is so the wax ring seals properly to the flange and the hub on the toilet. If a proper seal is not achieved it will result in leaking. If the flange is lower than or flush with the floor they make foam rings that cover the distance for a proper seal.

How is toilet flange attached to pipe?

0:054:12How to Install a New Toilet Flange | Ask This Old House - YouTubeYouTubeStart of suggested clipEnd of suggested clipIt's rockin that's why I put these shims in I see you put some shims let me explain what's going onMoreIt's rockin that's why I put these shims in I see you put some shims let me explain what's going on this is called a cast iron closet flange that the toilet attaches to this is installed at the height

Should toilet flange sit on top of tile?

The toilet flange needs to be on top of the finished floor. Meaning the bottom edge of the flange needs to be on the same plane as the toilet. So if your toilet sits on the tile, the flange needs to be on top of the tile too. The spacing of the toilet exit "horn" and sealing surface is designed for this height.

What if toilet flange is too low?

If you do have the problem of a too-short flange, there is a fairly easy solution. It's called a toilet flange spacer, or a toilet flange extender. They are available in different sizes based on different needs; some even have rubber or silicone gaskets attached that get inserted into the existing flange.

When should you use a toilet flange extender?

2:1313:43Toilet Flange Extender Kit - YouTubeYouTubeStart of suggested clipEnd of suggested clipAny toilet flange should always be installed on top of the finished floor. We have an example hereMoreAny toilet flange should always be installed on top of the finished floor. We have an example here which shows the finished floor is a wood flooring.

Should toilet flange be flush with finished floor?

In a typical toilet installation, the floor flange that sits inside the drain opening below the toilet should be positioned so that its bottom surface rests flush against the finished floor or no more than 1/4 inch above or below the floor.

Step 1: Removing the toilet bowl

First off, ensure that you have turned off the main water line of the toilet. It will not only stop any filthy massacre in the bathroom but also allow you to look at the flange ring. When the flange ring is damaged, you must replace the flange. Or else, you may consider repairing the rusted toilet flange and working with it for a few more months.

Step 2: Removing the old and rusted toilet flange

When you have placed the toilet bowl securely on the towel, use a few pieces of newspaper to block the outflow pipe. For this, push the newspapers carefully through the pipe but ensure that you may take it off whenever necessary with ease. So, don’t push it too hard.

Step 3: Choose the right toilet flange replacement

Now, it’s time to choose the right toilet flange for replacement. You need to take the old toilet flange to a hardware store for this. Or, you can take a picture of the old flange with your smartphone and use it to purchase the matching toilet flange.

Step 4: Reinstall the new toilet flange

Once you have the new toilet flange at hand, carefully remove the nuts and bolts from it and set them aside. Now, place it right on the existing subfloor of the bathroom. The toilet flange will have 2 channels to secure the nuts and screws.

Step 5: Remount the toilet bowl

Before you remount the toilet, tilt it up to install the new wax ring at the bottom opening part. Apply mild pressure to attach the wax ring to the toilet bowl bottom securely. Now, carefully, place the toilet over the newly installed flange.

For minor rot, a flange support is a quick fix

Minor wood rot around a toilet flange doesn't always mean you have to replace the subfloor. Solve the problem with a metal flange support instead.

Install the flange support

If you discover minor rot around the toilet flange, install a closet flange support under the flange to transfer the weight of the toilet to solid wood.

Required Tools for this Project

Have the necessary tools for this DIY project lined up before you start—you’ll save time and frustration.

Required Materials for this Project

Avoid last-minute shopping trips by having all your materials ready ahead of time. Here’s a list.

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