Cast Iron to PVC Flange Switch: A DIY Guide for Plumbers and Homeowners
What To Know
- Turn off the water supply to the toilet and flush the toilet to empty the tank and bowl.
- Replacing a cast iron toilet flange with PVC is a relatively simple task that can be completed in a few hours.
- The best way to remove a rusted or corroded cast iron flange is to use a reciprocating saw to cut through the flange.
Replacing a cast iron toilet flange with PVC is a straightforward task that can be completed in a few hours. By following these step-by-step instructions, you can ensure a secure and leak-free installation.
Gather Your Materials
Before you begin, gather the following materials:
- New PVC toilet flange
- Toilet wax ring
- Hacksaw or reciprocating saw
- Pry bar
- Adjustable wrench
- Plumber’s putty
- Utility knife
- Safety glasses
Step 1: Remove the Old Flange
1. Turn off the water supply to the toilet and flush the toilet to empty the tank and bowl.
2. Disconnect the water supply line from the toilet fill valve.
3. Use a pry bar to carefully remove the old cast iron flange from the floor. Be cautious not to damage the floor or the drainpipe.
Step 2: Clean the Area
Once the old flange is removed, clean the area thoroughly using a damp cloth. Remove any debris or old sealant from the floor and the drainpipe.
Step 3: Install the New Flange
1. Apply a bead of plumber’s putty to the bottom of the new PVC flange.
2. Position the new flange over the drainpipe and press it down firmly.
3. Secure the flange to the floor using the included bolts or screws. Tighten the bolts or screws until the flange is snug against the floor.
Step 4: Install the Wax Ring
1. Open the package of toilet wax rings and separate the two rings.
2. Place one ring on the bottom of the toilet base, around the outlet hole.
3. Place the other ring on the top of the PVC flange.
Step 5: Install the Toilet
1. Carefully lift the toilet onto the wax rings.
2. Align the toilet with the drainpipe and lower it into place.
3. Bolt the toilet to the floor using the provided bolts or screws.
Step 6: Reconnect the Water Supply
1. Reconnect the water supply line to the toilet fill valve.
2. Turn on the water supply and check for leaks.
Step 7: Finish the Installation
1. Use a utility knife to trim any excess wax ring that may be protruding from around the base of the toilet.
2. Apply a bead of silicone caulk around the base of the toilet where it meets the floor.
Tips for Success
- Always wear safety glasses when working with power tools.
- If the old cast iron flange is rusted or corroded, it may be difficult to remove. You may need to use a reciprocating saw to cut through the flange.
- Be careful not to overtighten the bolts or screws when securing the toilet to the floor.
- If you have any questions or encounter any problems during the installation, consult a qualified plumber.
How to Replace a Cast Iron Toilet Flange with PVC: A Step-by-Step Guide
Conclusion
Replacing a cast iron toilet flange with PVC is a relatively simple task that can be completed in a few hours. By following these step-by-step instructions, you can ensure a secure and leak-free installation.
Questions You May Have
Q: Can I replace the cast iron flange with a brass flange?
A: Yes, you can replace the cast iron flange with a brass flange. However, brass flanges are more expensive than PVC flanges and are not as commonly used.
Q: What is the best way to remove a rusted or corroded cast iron flange?
A: The best way to remove a rusted or corroded cast iron flange is to use a reciprocating saw to cut through the flange.
Q: How often should I replace the toilet wax ring?
A: The toilet wax ring should be replaced every time the toilet is removed or reinstalled.
