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How to Replace a Bathtub Drain: A Step-by-Step Guide [2026]

Replacing a bathtub drain might seem daunting, but with the right tools and a clear set of instructions, it's a project you can definitely tackle yourself! This comprehensive guide will walk you through each step, from removing the old drain to installing a shiny new one. By the end of this article, you'll have saved money on a plumber and gained the satisfaction of completing a successful DIY project. Let's get started!

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Before you even think about touching that old bathtub replacement drain, you need to have all the necessary tools and materials within reach. This will save you time and frustration in the long run. Here's what you'll need:

• New Bathtub Drain Assembly: Make sure it's compatible with your bathtub (size, material). A good recommendation would be the Oatey 42099 Lift and Turn Bath Drain with Overflow - Chrome.
• Bathtub Drain Wrench (or Internal Pipe Wrench): This is crucial for removing the old drain.
• Adjustable Pliers: Helpful for gripping and turning.
• Screwdrivers (Flathead and Phillips): You might need these for removing any screws.
• Putty Knife or Scraper: For cleaning old plumber's putty.
• Plumber's Putty: Essential for creating a watertight seal.
• Clean Rags or Paper Towels: For cleaning up messes.
• Bucket or Container: To catch any water or debris.
• Gloves: To protect your hands.
• Penetrating Oil (like WD-40): To loosen stubborn threads.

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Protect your bathtub and surrounding area before you start. Place a towel or drop cloth inside the tub to prevent scratches. Make sure the area is well-ventilated, and turn off the water supply to the faucet to avoid any accidental flooding.

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This is often the trickiest part of the whole process, especially if the old drain is corroded or stuck.

Option A: Using a Bathtub Drain Wrench

1. Inspect the Drain: Look for any screws or obstructions you need to remove first.
2. Insert the Wrench: Place the bathtub drain wrench into the drain opening. Make sure the teeth of the wrench grip the inside of the drain.
3. Apply Penetrating Oil (If Needed): If the drain seems stuck, spray some penetrating oil around the edges and let it sit for a few minutes.
4. Turn Counterclockwise: Apply firm, steady pressure and turn the wrench counterclockwise to loosen the drain. It might take some effort.
5. Remove the Drain: Once the drain is loose, you should be able to unscrew it by hand.

Option B: Using an Internal Pipe Wrench

If you don't have a bathtub drain wrench, an internal pipe wrench can also work but requires more finesse.

1. Insert the Wrench: Carefully insert the internal pipe wrench into the drain opening.
2. Adjust the Jaws: Expand the jaws of the wrench until they grip the inside of the drain.
3. Apply Penetrating Oil (If Needed): As with the drain wrench, penetrating oil can help loosen stubborn drains.
4. Turn Counterclockwise: Turn the wrench counterclockwise to loosen the drain. Be careful not to damage the tub.
5. Remove the Drain: Once loose, unscrew the drain by hand.

Dealing with Stubborn Drains

Sometimes, despite your best efforts, the old drain just won't budge. Here are a few tips:

• Apply More Penetrating Oil: Let it soak for a longer period.
• Use Heat: A hairdryer (on low setting) can help loosen the plumber's putty.
• Tap with a Hammer: Gently tap the drain wrench or pipe wrench with a hammer to help break the seal. Be extremely careful not to damage the tub!

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Once the old drain is removed, it's essential to thoroughly clean the drain opening.

1. Remove Old Putty: Use a putty knife or scraper to remove all traces of old plumber's putty.
2. Clean the Threads: Use a wire brush or a rag to clean the threads of the drain opening, ensuring a good seal with the new drain.
3. Wipe Clean: Wipe the entire area clean with a damp rag.

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Now for the exciting part - installing your new bathtub replacement drain!

1. Apply Plumber's Putty: Roll a rope of plumber's putty and apply it evenly to the underside of the drain flange (the part that sits on top of the tub).
2. Insert the Drain: Carefully insert the new drain into the drain opening.
3. Tighten the Drain: Use the bathtub drain wrench (or internal pipe wrench) to tighten the drain from underneath the tub. Tighten it securely, but be careful not to overtighten and damage the tub. Look for the recommended torque specifications for the Oatey 42099 Lift and Turn Bath Drain on the product's packaging or the manufacturer's website.
4. Remove Excess Putty: Remove any excess plumber's putty that squeezes out around the flange.

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Some bathtub drains have a linkage that connects to the overflow drain.

1. Connect the Linkage: Follow the manufacturer's instructions to connect the linkage to the overflow drain.
2. Adjust as Needed: Adjust the linkage as needed to ensure that the drain stopper opens and closes properly.

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The most important step - testing for leaks!

1. Close the Drain: Close the new bathtub replacement drain stopper.
2. Fill the Tub: Fill the tub with a few inches of water.
3. Check for Leaks: Carefully check around the drain flange and underneath the tub for any leaks.
4. Address Leaks: If you find any leaks, tighten the drain connection or reapply plumber's putty.

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Once you're confident that there are no leaks, you can finish up the job.

1. Clean Up: Clean up any mess and dispose of the old drain properly.
2. Admire Your Work: Step back and admire your new, leak-free bathtub drain!

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As mentioned earlier, having the right tools is key to a successful bathtub drain replacement. Here are a couple of specific recommendations:

• RIDGID 31010 Model 1017 Internal Wrench: This internal wrench is incredibly durable and provides a secure grip for removing even the most stubborn drains. Its adjustable jaws make it versatile for different drain sizes. The key feature is its self- centering design that prevents slippage and protects the tub surface.
• Oatey 31150 Plumber's Putty: This plumber's putty is a reliable choice for creating a watertight seal. It's easy to mold and apply, and it remains flexible for years. The putty's non-hardening formula ensures that it won't crack or shrink over time, providing a long-lasting seal.

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• **Should I use silicone caulk instead of plumber's putty?**While some people prefer silicone caulk, plumber's putty is generally recommended for bathtub drains because it remains pliable and doesn't shrink or crack over time. Silicone can be difficult to remove if you ever need to replace the drain again.
• What if I can't reach the drain from underneath the tub? Access can be tricky depending on your plumbing setup. If you can't reach the drain from underneath, you may need to cut an access panel in the wall behind the tub.
• How do I prevent future drain clogs? Consider using a hair catcher or drain screen to prevent hair and debris from entering the drain.
• My new drain is leaking even after tightening. What should I do? Remove the drain, clean the surfaces, and reapply fresh plumber's putty. Make sure you're using enough putty and that it's evenly distributed. Also, check for any damage to the drain flange or the drain opening.
• What is the best type of bathtub replacement drain? There are several types of bathtub replacement drains including lift and turn, toe-touch, pop-up, and trip lever drains. The best type for you will depend on your personal preference and what works best with your existing plumbing.

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Congratulations! You've successfully replaced your bathtub drain. You now have a new bathtub replacement drain. By following these steps, you've saved money, learned a new skill, and improved your home. Don't be afraid to tackle other DIY projects around the house. With a little patience and the right information, you can accomplish amazing things! You've got this! <br><a href="https://www.amazon.com/s?k=bathtub replacement drain&sort=price-asc-rank&tag=bestbathroomrenovation-20">[Shop Budget-Friendly bathtub replacement drain on Amazon.]</a><br>