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Reinstall Drain Flange and Test for Leaks — Install the Drain Shoe and Overflow

Beginner

Part of project

How to Replace a Bathtub Waste and Overflow Drain Assembly · Step 7 of 9

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In this video

Return to the inside of the bathtub. For the best seal, apply a thin rope of plumber's putty to the underside of the drain flange rim. Carefully align the drain flange with the drain shoe below and begin threading it in clockwise by hand. Once it's snug, use your pliers or drain wrench to tighten it fully. Be careful not to overtighten and crack the tub or strip the threads. Clean away any excess plumber's putty that squeezes out. Reinstall the drain stopper. Finally, fill the tub with water again and drain it while checking underneath for any leaks to confirm the repair was successful.

Goal: Complete Repair and Verify

Used in this video

  • Pliers (Tool Type: Plumbing Tools, Pliers_Type: Needle-Nose Pliers)To grip the crossbars of the drain flange and tighten it.
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FAQs

How long should I expect this bathtub drain replacement project to take, especially if I'm a beginner?

For a beginner, plan to dedicate 3-5 hours for this project, including preparation and clean-up. Accessing the old drain and ensuring proper sealing of the new one can take time, so don't rush the process to avoid potential leaks later on.

What are the most common mistakes beginners make that lead to leaks after installing a new bathtub waste and overflow?

The primary cause of leaks is inadequate sealing. Ensure you apply a generous amount of plumber's putty (like Oatey 14 oz. Plumber's Putty) under the drain flange and correctly position and tighten the overflow gasket. Always perform a thorough leak test before re-enclosing any access panels.

Do I need special tools to remove a stuck or corroded old drain flange, or will standard tools suffice?

While a screwdriver and tongue-and-groove pliers (Channellock 430/440) are often sufficient, a severely corroded flange might require a specialized drain wrench or carefully using a hacksaw (Husky 10 in. Close Quarters Hacksaw) to cut the crossbars. Avoid excessive force to prevent damaging the tub's finish.

What are the most important safety precautions I should take during this bathtub drain replacement?

Always turn off the water supply to the bathtub before starting to prevent accidental flooding. Wear safety glasses to protect your eyes from debris, and ensure good ventilation if using plumber's putty or sealants. A drop cloth (TRIMACO Stay Put Canvas Plus) will protect your bathroom floor and catch any spills.

Transcript
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washer and then go back inside of your bathtub and screw this back in from inside of your tub and it should take care of your problem. All right folks once again if you have a problem

Auto-generated transcript. May contain errors.