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Clean and Repair the Closet Flange — Prepare the Work Area and Clean the Flange

Beginner

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How to Install a Toilet Flange Extender · Step 1 of 6

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In this video

Scrape off the old wax ring from the toilet flange. Use paper towels and a cloth to thoroughly clean the flange and the surrounding floor area. Inspect the flange for damage. In the video, the metal part of the closet flange is heavily rusted. Use pliers to break away and remove the corroded metal ring. Stuff a rag into the drain pipe to block sewer gases and prevent debris from falling in.

Goal: Plumbing Pipes Repair

  • A severely damaged flange may require a full replacement, which is a more involved job. The repair shown is a temporary solution.

Used in this video

  • Putty knifeTo scrape off the old wax ring.
  • PliersTo break off the rusted parts of the old flange.
60.0K views3.0K20 minutes
Lowe's Home Improvement

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FAQs

Why is a toilet flange extender needed, and what's the typical time commitment for this beginner-level project?

A toilet flange extender like the Oatey 1/4 in. PVC Toilet Flange Spacer is needed when new, thicker flooring causes your existing flange to sit below the finished floor level, preventing a leak-proof seal. This project is considered beginner-friendly, mainly requiring basic hand tools and careful attention to detail. Expect to dedicate 1-2 hours for the installation once the toilet is removed and the area is prepped.

Which specific tools and materials are most critical for successfully installing the flange extender and ensuring a leak-proof seal?

Key tools include a Husky 10 in. Adjustable Wrench for bolts, an HDX 6-in-1 Screwdriver, and a JES 10 oz. 12:1 Caulk Gun for the silicone sealant. Crucial materials are the Oatey 1/4 in. PVC Toilet Flange Spacer itself, an Everbilt Extra Thick Toilet Wax Ring with Plastic Horn, and Everbilt 1/4 in. x 2-1/4 in. Toilet Floor Bolts for securing everything.

What are the biggest mistakes to avoid during installation to prevent future leaks?

The most common mistakes are failing to thoroughly clean and dry the existing flange before applying silicone, or neglecting to dry-fit the extender to ensure it's flush with the finished floor. Always use a fresh, high-quality Everbilt Extra Thick Toilet Wax Ring and ensure the closet bolts are tightened evenly without over-tightening, which can crack the toilet base.

What essential safety steps should I take before and during the flange extender installation?

Always begin by shutting off the water supply to the toilet and flushing to empty the tank and bowl completely. Wear FIRM GRIP Pro Cleaning Disposable Nitrile Gloves for hygiene and protection. Be mindful of lifting the toilet, which can be heavy, and ensure a stable, dry work area to prevent slips.

Transcript
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and I wasn't able to recreate the smell. But as soon as I flushed the toilet, water showed up on the floor. So the homeowner asked if I could fix that as well while I was there and so that's exactly what we're doing here. Once I pulled the toilet, you could see that that wax seal was not fully compressed down so I told him this is probably where that smell was coming from. This toilet has probably been leaking for a while judging by the condition of this closet flange. The customer didn't want to fully replace it at this time though so I repaired it for him the best that I could. I was also able to slightly raise it so it was almost even with the tile floor.

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