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Clean and Inspect Flange — Remove the Old Flange

Intermediate

Part of project

How to Replace a Broken Toilet Flange · Step 2 of 5

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In this video

With the toilet removed, use a putty knife or scraper to completely remove the old, dirty wax ring from the toilet flange and the bottom of the toilet. Dispose of the old wax in a trash bag. Thoroughly inspect the flange for cracks, corrosion, and to confirm it is level and properly secured to the subfloor. In the video, the flange is identified as being crooked and improperly installed, which is the root cause of the leak.

Goal: Toilet Repair (Repairing a leaking or running toilet.)

  • The area around a toilet drain is unsanitary. Always wear gloves during this step.

Used in this video

  • Putty knife (Tool Type: Hand Tools, Putty Knife: Metal)To scrape away the old wax ring from the toilet flange and the toilet base.
  • Gloves (Tool Type: Safety Equipment, Gloves Material: Nitrile)To protect hands from germs and grime when handling the old wax ring and toilet.
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This Old House

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FAQs

How long does a toilet flange replacement typically take for a DIYer?

This intermediate DIY project usually takes between 2 to 4 hours to complete, assuming no major complications. Factors like severely rotted subfloor or rusted bolts can extend the timeline, so allocate extra time if you anticipate these issues.

What are the absolute essential tools and materials I need for this job if I don't have everything on the list?

You will absolutely need an adjustable wrench, screwdriver, putty knife, and a level. For materials, a new DANCO Perfect Seal Toilet Wax Ring with Bolts is critical, and a new toilet supply line is highly recommended to prevent future leaks.

What are the most important safety precautions I should take when replacing a toilet flange?

Always shut off the water supply to the toilet and flush it to drain the tank and bowl completely before starting. Wear gloves to protect against unsanitary conditions, and use caution when lifting the toilet as it is heavy and can be awkward, potentially causing back strain or damage.

What's a common mistake beginners make when installing a new flange, and how can I avoid it?

A common mistake is not ensuring the new flange is level and at the correct height, flush with the finished floor. This can lead to an improper seal with the wax ring and subsequent leaks. Use shims if needed to achieve a perfectly level and secure installation.