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How to Remove and Replace a Bathtub Drain Flange · Step 1 of 7

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In this video

Gather the necessary tools for the job. You will need a screwdriver, a 3/32 inch Allen wrench, emery cloth or sandpaper, and waterproof silicone lube. For more severe corrosion, you may also need CLR (Calcium, Lime, Rust remover), a toothbrush, and a Dremel tool with a wire brush. Always wear safety goggles for protection. It is also recommended to cover the sink drain to prevent any small parts from being lost.

Goal: Gathering all necessary tools and supplies for the repair.

  • Cover the sink drain with a stopper or cloth to avoid losing small parts.
  • Wear safety goggles, especially if using a Dremel tool or chemicals.

Used in this video

  • Screwdriver (Screwdriver_Type: Flathead)Prying off the crown ring.
  • Allen Wrench (Allen_Wrench_Size: 3/32)Loosening and tightening the set screw on the faucet handle.
  • Sandpaper (Sandpaper_Grit: Medium)Scrubbing away corrosion and mineral buildup from the inside of the faucet spout.
  • Dremel Tool (brand: Dremel, Drill_Type: Cordless) · optionalRemoving stubborn corrosion with a wire brush attachment.
  • Toothbrush · optionalScrubbing the inside of the spout after applying CLR.
  • Safety GogglesProtecting eyes from debris and chemicals.
  • Utility Knife (alternatives: Small flathead screwdriver, pick tool) · optionalPrying off the plastic plug on the faucet handle.
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FAQs

How difficult is this project for a beginner, and how long does it typically take?

This is a beginner-friendly plumbing project, but patience is key, especially with old, corroded parts. Expect it to take 1-2 hours, depending on how easily the old flange comes out and the amount of cleaning required. Factor in additional time for thorough leak testing to ensure a watertight seal.

Do I really need a special tub drain wrench, or can I use other tools to remove the old flange?

A dedicated tub drain wrench (like the Husky Double Ended Tub Drain Wrench 16PL0128) is highly recommended. It provides the best grip and leverage, minimizing the risk of stripping the flange or damaging the tub. While some might try large pliers or screwdrivers with a hammer, these often cause more damage and frustration.

My old drain flange is stuck or severely corroded. How can I remove it without damaging the tub?

If the flange is very stuck, try applying penetrating oil and letting it sit for a few hours to loosen corrosion. Use the tub drain wrench firmly but carefully to avoid stripping the interior. For extremely stubborn or corroded flanges, you might need to carefully cut the crossbars inside the flange with a reciprocating saw and then break out the pieces, always protecting the tub surface.

What's the best way to ensure a watertight seal and prevent future leaks when installing the new flange? Should I use plumber's putty or silicone?

Plumber's putty is generally preferred for this application. Apply a generous, even bead of Oatey Plumber's Putty underneath the lip of the new flange before setting it into the drain opening; it should squeeze out when tightened. For added security, you can also wrap Teflon tape around the drain shoe threads before screwing in the new flange.

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So let's get started. You will need a screwdriver, 330 seconds out-and-ring, emery cloth or sandpaper, and waterproof silicone lube. Additionally, you may need some CLR and a toothbrush. For really stubborn corrosion, a Dremel tool is handy. Be sure to wear safety goggles. It's a good idea to cover the sink drain as you will see. Remove the plastic plug that covers the set screw hole. Oops. Using the 330 seconds

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