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How To Replace Your Old, Rusty Cast Iron Toilet Flange With Pvc In Just 3 Easy Steps!

Daniel Mitchell is a seasoned author at ToiletSense, specializing in toilet repair and maintenance. With years of experience in the plumbing industry, Daniel has become an expert in his field, providing readers with valuable insights and practical solutions to common toilet-related problems.

What To Know

  • Replacing a cast iron toilet flange with PVC is a common plumbing task that can be completed with the right tools and materials.
  • Replacing a cast iron toilet flange with PVC is a relatively simple task that can improve the performance and longevity of your toilet.
  • However, it’s important to use a flange that is specifically designed for toilets, as other types of plastic flanges may not be able to withstand the weight and pressure of a toilet.

Replacing a cast iron toilet flange with PVC is a common plumbing task that can be completed with the right tools and materials. This guide will provide you with step-by-step instructions on how to remove the old flange, install the new PVC flange, and seal the connection.

Materials You’ll Need

  • PVC toilet flange
  • Wax ring
  • Toilet bolts
  • Toilet bolt caps
  • Hacksaw
  • Screwdriver
  • Adjustable wrench
  • Plumber’s putty
  • Rags

Safety Precautions

Before starting any plumbing work, it’s important to take safety precautions. Wear gloves and safety glasses to protect yourself from sharp edges and debris. Turn off the water supply to the toilet and flush the toilet to remove any remaining water.

Step-by-Step Instructions

1. Remove the Old Cast Iron Flange

Using a hacksaw, carefully cut the cast iron flange at the base where it meets the drainpipe. Be sure to cut through the bolts that are holding the flange in place.

2. Clean the Drainpipe

Once the flange is removed, clean the drainpipe thoroughly using a rag and plumber’s putty. Remove any debris or old sealant that may interfere with the installation of the new flange.

3. Install the PVC Flange

Apply a thin layer of plumber’s putty to the bottom of the PVC flange. Align the flange with the drainpipe and press it down firmly. Use the adjustable wrench to tighten the bolts that secure the flange to the drainpipe.

4. Install the Wax Ring

Place the wax ring on the bottom of the toilet bowl. Make sure that the wax ring is centered and that the flange is properly seated inside the wax ring.

5. Set the Toilet Bowl

Carefully lift the toilet bowl and set it in place on the wax ring. Press down firmly on the toilet bowl to ensure a good seal.

6. Secure the Toilet

Insert the toilet bolts through the holes in the toilet base and tighten them using the screwdriver. Do not overtighten the bolts, as this can damage the toilet bowl.

7. Install the Toilet Bolt Caps

Place the toilet bolt caps over the toilet bolts to conceal them.

Troubleshooting Tips

  • If the toilet leaks at the base, tighten the toilet bolts.
  • If the toilet rocks or wobbles, the wax ring may not be properly sealed. Remove the toilet and reinstall the wax ring.
  • If the toilet drain is clogged, use a toilet auger to clear the blockage.

Key Points: Upgrading Your Toilet Flange for a Secure and Durable Connection

Replacing a cast iron toilet flange with PVC is a relatively simple task that can improve the performance and longevity of your toilet. By following these step-by-step instructions, you can ensure a secure and leak-free connection.

What You Need to Know

Q: Can I use a rubber toilet flange instead of a PVC flange?
A: Yes, rubber toilet flanges are an acceptable alternative to PVC flanges. They are slightly more flexible and easier to install, but they may not be as durable as PVC flanges.

Q: How often should I replace my toilet flange?
A: Toilet flanges should be replaced every 10-15 years, or sooner if they show signs of damage or wear.

Q: Can I replace a cast iron toilet flange with a plastic flange?
A: Yes, you can replace a cast iron toilet flange with a plastic flange. However, it’s important to use a flange that is specifically designed for toilets, as other types of plastic flanges may not be able to withstand the weight and pressure of a toilet.

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Daniel Mitchell

Daniel Mitchell is a seasoned author at ToiletSense, specializing in toilet repair and maintenance. With years of experience in the plumbing industry, Daniel has become an expert in his field, providing readers with valuable insights and practical solutions to common toilet-related problems.

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