Remove the Toilet Tank — Preparation and Toilet Removal
Part of project
How to Replace a Cast Iron Toilet Flange with PVC · Step 1 of 10
In this video
Place a small bucket or towel under the water supply line connection to catch any drips. Use a wrench to loosen and disconnect the water supply line from the bottom of the fill valve. Next, locate the two tank bolts under the rim of the toilet bowl. Use a wrench or socket to unscrew the nuts from these bolts. Once the nuts and washers are removed, carefully lift the toilet tank straight up and off the bowl. Place it on a protected surface like a towel.
Goal: Detach the toilet tank from the toilet bowl.
- The tank is made of porcelain and can be heavy and fragile. Handle it with care to avoid dropping or cracking it.
Used in this video
- Wrench (brand: unknown, Wrench Type: Open-end) — Loosening the supply line nut and the tank bolt nuts.
- Towel (brand: unknown, Towel Material: Absorbent cloth towel) — Protecting the floor and providing a soft surface to place the tank on.
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FAQs
How difficult is replacing a cast iron toilet flange with PVC, and how long should I expect it to take?
This project is rated as intermediate. While it doesn't require specialized plumbing skills, removing the old cast iron and lead/oakum seal can be physically demanding and time-consuming. Expect it to take anywhere from half a day to a full day, especially if you encounter unexpected issues like a stubborn old flange.
What specialized tools are absolutely essential for removing the old cast iron flange and its lead/oakum seal?
Beyond basic household tools, you'll definitely need a cold chisel and a hammer for breaking up the old cast iron and carefully removing the lead/oakum seal. A shop vacuum is also crucial for quickly cleaning up debris and ensuring the cast iron pipe is spotless before installing the new flange.
What are the most important safety precautions I should take when demolishing the old cast iron flange and seal?
Always wear heavy-duty safety glasses to protect against flying fragments and a respirator (like the Honeywell R95) to avoid inhaling dust and potential lead particles from the old seal. Heavy-duty gloves are also essential to protect your hands from sharp edges and the demolition tools.
What's a common mistake when installing the new PVC compression flange, and how can I avoid it?
A common mistake is not thoroughly cleaning and deburring the inside of the cast iron pipe after removing the old flange. Any rough edges, rust, or debris can compromise the compression seal of the new PVC flange, leading to leaks. Ensure the pipe's interior is smooth and completely clean for a watertight fit.
Remove the Toilet Tank — Preparation and Toilet Removal
Part of project
How to Replace a Cast Iron Toilet Flange with PVC · Step 1 of 10
In this video
Place a small bucket or towel under the water supply line connection to catch any drips. Use a wrench to loosen and disconnect the water supply line from the bottom of the fill valve. Next, locate the two tank bolts under the rim of the toilet bowl. Use a wrench or socket to unscrew the nuts from these bolts. Once the nuts and washers are removed, carefully lift the toilet tank straight up and off the bowl. Place it on a protected surface like a towel.
Goal: Detach the toilet tank from the toilet bowl.
- The tank is made of porcelain and can be heavy and fragile. Handle it with care to avoid dropping or cracking it.
Used in this video
- Wrench (brand: unknown, Wrench Type: Open-end) — Loosening the supply line nut and the tank bolt nuts.
- Towel (brand: unknown, Towel Material: Absorbent cloth towel) — Protecting the floor and providing a soft surface to place the tank on.
Frequently Asked Questions
How difficult is replacing a cast iron toilet flange with PVC, and how long should I expect it to take?
This project is rated as intermediate. While it doesn't require specialized plumbing skills, removing the old cast iron and lead/oakum seal can be physically demanding and time-consuming. Expect it to take anywhere from half a day to a full day, especially if you encounter unexpected issues like a stubborn old flange.
What specialized tools are absolutely essential for removing the old cast iron flange and its lead/oakum seal?
Beyond basic household tools, you'll definitely need a cold chisel and a hammer for breaking up the old cast iron and carefully removing the lead/oakum seal. A shop vacuum is also crucial for quickly cleaning up debris and ensuring the cast iron pipe is spotless before installing the new flange.
What are the most important safety precautions I should take when demolishing the old cast iron flange and seal?
Always wear heavy-duty safety glasses to protect against flying fragments and a respirator (like the Honeywell R95) to avoid inhaling dust and potential lead particles from the old seal. Heavy-duty gloves are also essential to protect your hands from sharp edges and the demolition tools.
What's a common mistake when installing the new PVC compression flange, and how can I avoid it?
A common mistake is not thoroughly cleaning and deburring the inside of the cast iron pipe after removing the old flange. Any rough edges, rust, or debris can compromise the compression seal of the new PVC flange, leading to leaks. Ensure the pipe's interior is smooth and completely clean for a watertight fit.