Repairing Guides

how to repair a toilet flange in concrete

by Mrs. Theresa Gorczany IV Published 3 years ago Updated 2 years ago
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Instructions

  • Cut off the Old Flange and Obstructions. After you remove the toilet, you will probably find an existing toilet flange. ...
  • Scrape Off the Old Wax Ring. After you remove the obstructions, the old wax ring will still be in place around the drain opening.
  • Place T-Bolts in the New Toilet Flange. Place the T-bolts upside-down in the new toilet flange so that the threaded shafts are sticking up. ...
  • Position the Toilet Flange. Press the toilet flange down into the drain opening, using the T-bolts as reference points for positioning.
  • Drill Holes Into the Concrete. With a hammer drill and 1/4-inch concrete/masonry bit, bore four holes equidistant around the ring directly through the holes in the toilet flange and down ...
  • Screw the Toilet Flange Onto the Concrete. Use Tapcon anchors or a similar type of masonry/concrete screws to fasten the toilet flange to the concrete slab.

Part of a video titled How to Fix a Toilet - Cement Sub-Flooring Repairs - Part 1 of 2
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Itself 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.

Full Answer

How to replace a rusted toilet flange?

Step by Step

  • Install the new closet elbow or length of vertical pipe flush with the subfloor’s top surface.
  • Dry-fit and orient the flange, so that a line through its tracks would be parallel to the back wall.
  • Drill pilot holes in the subfloor for the screws.

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How do you repair a closet flange?

Remove the Existing Toilet Flange

  • Plug the drain pipe with a towel or old T-shirt. ...
  • Clean the wax ring from the bottom of the toilet and base of the flange by scraping it away with a putty knife or paint scraper.
  • Remove the mounting bolts and screws. ...
  • If you have a gasket-sealed PVC flange, the most common type of flange, simply lift it from the outflow pipe.

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How to install a toilet on a concrete floor?

Instructions

  • Cut off the Old Flange and Obstructions. After you remove the toilet, you will probably find an existing toilet flange. ...
  • Scrape off Old Wax Ring. ...
  • Pick the Correct New Toilet Flange. ...
  • Place T-Bolts in New Toilet Flange. ...
  • Position Toilet Flange. ...
  • Drill Holes Into Concrete. ...

What is the offset for a toilet flange?

They include:

  • The proper distance from the back wall to the toilet flange.
  • The correct amount of space on both the right and left side of the toilet.
  • The right amount of space in front of the toilet bowl.
  • The best spot would be to put the cold-water supply line in.

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How do you glue a toilet flange to a concrete floor?

0:223:45How to Fix a Toilet - Cement Sub-Flooring Repairs - Part 1 of 2YouTubeStart of suggested clipEnd of suggested clipAnd the toilet flange is inserted into the sewer. Inlet. Pilot holes are then drilled into theMoreAnd the toilet flange is inserted into the sewer. Inlet. Pilot holes are then drilled into the cement. And then the cement screws installed securing the flange to the cement slab.

How do you repair a broken toilet flange?

0:051:17How to Repair Broken Toilet Flange - YouTubeYouTubeStart of suggested clipEnd of suggested clipTo begin remove the broken or corroded sections of the existing ring. Next apply liberal amount ofMoreTo begin remove the broken or corroded sections of the existing ring. Next apply liberal amount of silicone to the top of the existing. Ring.

How do you fix an uneven toilet flange in concrete?

0:171:52Level Up An Out of Level Toilet Flange - YouTubeYouTubeStart of suggested clipEnd of suggested clipThis is level with the floor. You take it and you flip it back over. So it sits level on theMoreThis is level with the floor. You take it and you flip it back over. So it sits level on the existing out of level flange. Now you install a standard wax ring in the middle.

How do you replace a cast iron toilet flange on a concrete floor?

0:1138:04Replacing a Cast Iron Toilet Flange Part 3 - YouTubeYouTubeStart of suggested clipEnd of suggested clipI've now got most of the concrete. That's over the top of the toilet flange out of the way chiseledMoreI've now got most of the concrete. That's over the top of the toilet flange out of the way chiseled it out i've got the lead exposed.

How do you fix a PVC toilet flange in concrete?

4:5710:54How to Replace a Broken PVC Toilet Flange (Start to Finish) - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd make sure that it's a smooth bit and now I'll go ahead and glue it you want to install. TheMoreAnd make sure that it's a smooth bit and now I'll go ahead and glue it you want to install. The flange so when it's down in there it's sitting just the height of the flange off the floor.

Can a cracked toilet flange be repaired?

Broken or Cracked Toilet Flange The fix is to replace the entire toilet flange or to use a repair kit to reinforce the broken bolt rail. Sometimes, a small amount of rocking can occur simply because the wax ring is becoming compressed from long use. Try tightening the bolts that hold the toilet to the floor.

What should you do if the sewer flange for toilet is not level and below finish floor grade?

0:4014:19Fix toilet flange that is TOO HIGH - YouTubeYouTubeStart of suggested clipEnd of suggested clipHowever we are not going to do that we're just going to cut this out and put a new one in into theMoreHowever we are not going to do that we're just going to cut this out and put a new one in into the toilet. This part right here is what goes inside the flange. And down into the plumbing.Fix toilet flange that is TOO HIGH - YouTubehttps://www.youtube.com › watchhttps://www.youtube.com › watchSearch for: What should you do if the sewer flange for toilet is not level and below finish floor grade?

Does toilet flange need to be perfectly level?

The optimum flange height to aim for is 1/4 inch above the finished floor. This typically allows for almost any type of wax ring to be used and still ensure a good seal. If you recently tiled or changed the bathroom flooring, the flange height is likely less than optimal.How to Properly Set a Toilet to Prevent Leaks - The Sprucehttps://www.thespruce.com › setting-a-toilet-2719046https://www.thespruce.com › setting-a-toilet-2719046Search for: Does toilet flange need to be perfectly level?

Should toilet flange be flush with 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.How to Install a Toilet Flange Extender - The Sprucehttps://www.thespruce.com › installing-a-toilet-flange-exte...https://www.thespruce.com › installing-a-toilet-flange-exte...Search for: Should toilet flange be flush with floor?

What causes a toilet flange to break?

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 to Repair a Cast-Iron Toilet Flange | Ask This Old Househttps://www.youtube.com › watchhttps://www.youtube.com › watchSearch for: How do you fix a cast iron toilet flange?

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

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.REMOVING & REPLACING a Cast Iron Toilet Flange - YouTubehttps://www.youtube.com › watchhttps://www.youtube.com › watchSearch for: How do you remove an old cast iron toilet flange?

How do you fix a broken 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.Oct 12, 2021How Much Does a Plumber Cost to Replace a Toilet Flange?https://www.mrblueplumbing.com › plumber › toilet-flangehttps://www.mrblueplumbing.com › plumber › toilet-flangeSearch for: How much does it cost to replace a cast iron toilet flange?

How do you use a flange repair kit?

Old cast iron and all-plastic toilet flanges are the most likely to break. The problem is usually caused by rocking toilets or overtightened toilet flange nuts. Look for a cracked or broken rim on the outside of the slots that hold in the bolts (Photos 3 and 4).

How do you install a toilet flange on a concrete floor?

Cut off the Old Flange and Obstructions. After you remove the toilet, you will probably find an existing toilet flange.

Can I glue toilet flange 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.

Should a toilet flange be flush with the floor?

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.

Do you put the wax ring on the toilet or the flange?

Place the wax ring on the closet flange, not on the toilet. Then, pick up the toilet and set it evenly over the closet flange, making sure the bolts come through the bolt holes in the toilet base. Fine-tune the toilet position, so it’s right where you want it, then push it straight down so it smashes the wax evenly.

How do I know if my toilet flange is bad?

If you notice a lot of water pooling at the base of your toilet and inspect to find that your flange is cracked or broken, it’s time for a replacement. Signs of potential flange damage:

Should I replace toilet wax ring?

It requires no maintenance and can last 30 or more years, often as long as the toilet itself. But sometimes wax rings can dry out, crumble, and fail prematurely. When that happens, they need to be replaced. The telltale sign of wax ring failure is water leaking out from around the base of the toilet.

Should PVC toilet flange be glued?

pvc flange should be glued into a pvc pipe. IT would have been less of a problem if a plumber had made the replacement. Use a “good” flange and you will not have to do it again. Caulk is NOT glue.

How do you install a toilet flange on a concrete floor?

Cut off the Old Flange and Obstructions. After you remove the toilet, you will probably find an existing toilet flange.

Can I glue toilet flange 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 do you fix a broken toilet flange?

Hook the heads of the closet bolts to the underside of the repair plate, repair ring or push-in replacement and center them in the tracks. Place a new wax ring on the flange opening, replace the toilet and bolt it to the flange. Replace the supply hose and turn the water back on.

Should a toilet flange be flush with the floor?

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.

Do you put the wax ring on the toilet or the flange?

Place the wax ring on the closet flange, not on the toilet. Then, pick up the toilet and set it evenly over the closet flange, making sure the bolts come through the bolt holes in the toilet base. Fine-tune the toilet position, so it’s right where you want it, then push it straight down so it smashes the wax evenly.

How do I know if my toilet flange is bad?

If you notice a lot of water pooling at the base of your toilet and inspect to find that your flange is cracked or broken, it’s time for a replacement. Signs of potential flange damage:

Should PVC toilet flange be glued?

pvc flange should be glued into a pvc pipe. IT would have been less of a problem if a plumber had made the replacement. Use a “good” flange and you will not have to do it again. Caulk is NOT glue.

What happens if you remove a wax ring from a drain?

After you remove the obstructions, the old wax ring will still be in place around the drain opening. The wax most likely will be thick, sticky, and possibly stained with sewage. Removing the wax ring requires patience, a putty knife, and latex gloves.

What tool do I need to drill into masonry?

If you expect to drill into masonry more often, purchase a good-quality tool, such as a Bosch, Hilti, DeWalt, or Milwaukee hammer drill. Because the old bolts will need to be cut off, you'll need some type of power tool to do the job. A manual hacksaw will not work, because you need to move the saw blade against and parallel to the concrete slab.

Can you keep old bolts in place?

If the old bolts are in good condition and match up perfectly with the new flange, you can keep them in place to secure the new flange. But if the bolts are unacceptable (too rusted, mismatched, too short, etc.), they must be cut off before installing the new flange.

Can you rotate a toilet flange?

You can rotate the flange in either direction until you have reached the preferred position. After the toilet is placed, you will still have the opportunity for some minor rotation, but it is still best to get the position as straight as possible before securing the flange. Lee Wallender.

Can you use a hacksaw to cut concrete?

A manual hacksaw will not work, because you need to move the saw blade against and parallel to the concrete slab. Either an oscillating multi-tool equipped with a metal-cutting blade or an angle grinder will do the trick.

Can you drill holes in concrete to replace flanges?

When the subfloor is concrete, as is often the case with basement bathrooms or other slab foundation situations, replacing the flange is no easy matter, since it can be quite hard to drill holes in concrete to secure the new flange. But using two specialty tools—a multi-tool or similar cutting device, along with a hammer drill—makes it fairly easy ...

How do I replace a cast iron toilet flange?

Cast Iron Flanges. How to Replace a Cast Iron Toilet Flange in Concrete. Step 1: Tools for the Job. Step 2: Creating a Hole in the Concrete. Step 3: Cutting Out the Old Flange. Step 4: The Bolts. Step 5: Scrape the Old Wax Ring Off. Step 6: New T-Bolts. Step 7: Positioning the Flange.

How long does it take to fix a ring flange?

The good news is that, with an intermediate level of skill, you can fix the problem in about 90 minutes and for under $20. You just need to cut away the old flange, scrape off any ring wax, and install the new flange.

How to use T bolts?

You can use your new T-bolts as a reference for positioning. Ensure that both bolts sit an equal distance from the wall where the toilet will be positioned. That means the toilet will be parallel to the wall. Rotate the flange as needed to get the right alignment.

Do you have to remove concrete from a flange?

The good news is that you won’t have to remove much concrete. Cutting out a square just larger than the space the flange occupies should be more than enough to work with. From there, it is just a matter of following this step-by-step guide to get the job done.

Can you drill a spanner flange?

The full-sized spanner flanges, on the other hand, are damn near impossible to install because you can’t easily drill into a cast iron flange. Cast iron is highly durable, so if you are looking for longevity out of your flange, that is the way to go.

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