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Repair the Closet Flange — Secure the Extender and Closet Bolts

Beginner

Part of project

How to Install a Toilet Flange Extender · Step 4 of 6

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In this video

To fix the damaged flange, a new metal adjustable replacement flange, also known as a repair ring, is installed. This two-piece ring slides underneath the existing flange's bolts or edges and is positioned over the drain. The two halves are joined together. Screws are then driven through the repair ring into the subfloor to create a solid, level mounting surface. New closet bolts are inserted into the slots on the new repair ring.

Goal: Toilet Repair (Base Leak)

Used in this video

  • Screwdriver (Tool Type: Hand Tools, Screwdriver Type: Phillips head)Securing the new repair ring to the subfloor.
40.6K views17925 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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All right now to put on the repairing so we replaced an initial repairing which means this toilet was messed up twice so I'm really hoping this gasket that we put on top of this repairing actually does what it says it's going to do and that it will move although we're going to try really hard to get it level so that the toilet doesn't flex at all anymore after this. We could just try and put a wax ring on this again but because we have this and I'm really hoping

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