How Do You Change the Bathtub Drain Yourself?

AvatarByColleen Barnes Bathroom Maintenance

Replacing a bathtub drain might not be the most glamorous home improvement task, but it’s one of those essential fixes that can make a big difference in your bathroom’s functionality and hygiene. Whether your drain is leaking, clogged beyond repair, or simply outdated, knowing how to change the bathtub drain yourself can save you time, money, and the hassle of calling a plumber. With the right tools and a bit of patience, this project is well within the reach of most DIY enthusiasts.

Understanding the basics of bathtub drain replacement is key before diving in. It involves more than just unscrewing a few parts; you’ll need to navigate plumbing connections, ensure a watertight seal, and select the right drain type for your tub. While it may sound daunting, breaking the process down into manageable steps makes the task approachable. Plus, a fresh drain can improve water flow and prevent leaks that might otherwise cause damage over time.

In the sections ahead, we’ll explore the essential tools you’ll need, the common types of bathtub drains, and the step-by-step process to remove the old drain and install a new one correctly. Whether you’re tackling this for the first time or looking to refresh your skills, this guide will equip you with the knowledge to confidently change your bathtub drain and keep your

Removing the Old Bathtub Drain

Begin by clearing the area around the drain to ensure easy access. If the bathtub has a drain cover or stopper, remove it according to the type—twist, pull, or unscrew. Next, use a drain wrench or a pair of locking pliers to grip the old drain flange securely. Turn the wrench counterclockwise to unscrew the drain from the tub. Applying steady pressure is key; if the drain is stuck, apply penetrating oil around the threads and allow it to soak for 10-15 minutes before attempting removal again.

In cases where the drain is corroded or damaged, it may require additional tools such as a hacksaw to carefully cut through the flange without damaging the tub. Take care to protect the tub surface with a cloth or tape when using cutting tools. Once the drain is loosened and removed, clean the drain hole thoroughly to remove any remaining putty, debris, or old plumber’s tape.

Preparing the New Drain for Installation

Before installing the new drain, inspect it for any manufacturing defects or debris inside the threads. It’s essential to apply plumber’s putty or a suitable sealant around the underside of the drain flange to ensure a watertight seal with the tub surface. Roll a small amount of plumber’s putty into a rope shape and apply evenly around the flange.

If your new drain assembly includes a gasket or rubber washer, position it according to the manufacturer’s instructions, typically under the flange or on the threaded portion. Some drains require applying plumber’s tape (Teflon tape) on the threads to prevent leaks and ease the screwing process.

Installing the New Bathtub Drain

Insert the new drain flange into the drain hole, pressing firmly to compress the plumber’s putty and create a tight seal. From beneath the tub, thread the drain body onto the flange by turning it clockwise. Hand-tighten initially, then use a drain wrench or pliers to secure it further without over-tightening, which could damage the tub or strip the threads.

Connect the drain assembly to the drainpipe using the appropriate fittings, ensuring all connections are tight and secure. If the drain has a stopper mechanism, reattach or install it according to the product instructions.

Testing for Leaks and Finishing Touches

Once the new drain is installed, it is crucial to test the system for leaks before finalizing the job. Run water into the tub and observe all drain connections carefully. Check for any signs of water seeping around the flange or beneath the tub.

If leaks are detected, tighten fittings as necessary, or apply additional sealant where appropriate. After confirming a leak-free installation, remove any excess plumber’s putty that has squeezed out around the drain flange with a clean rag.

Common Bathtub Drain Types and Their Installation Considerations

Different types of bathtub drains require specific installation methods. Understanding these can help ensure the correct approach is used for your particular drain.

Drain Type Installation Considerations Tools Recommended
Lift-and-Turn Requires aligning the stopper with the drain body; usually screws on and off Drain wrench, screwdriver
Push-and-Pull Simple pull to open/close; ensure the plunger mechanism is free of debris Drain wrench, pliers
Toe-Touch Spring-loaded stopper; proper alignment critical for smooth operation Drain wrench, adjustable wrench
Trip Lever Connected to overflow plate; requires careful assembly of linkage Wrench set, screwdriver

By recognizing the specific drain type and following the appropriate installation steps, you can ensure a durable, leak-free bathtub drain replacement.

Preparing to Replace the Bathtub Drain

Before beginning the process of changing the bathtub drain, it is essential to gather all necessary tools and materials to ensure a smooth and efficient replacement. Preparation also involves assessing the existing drain setup to anticipate any complications.

  • Tools Required:
    • Drain wrench or adjustable pliers
    • Flat-head screwdriver
    • Pipe wrench
    • Plumber’s putty or silicone caulk
    • New bathtub drain assembly
    • Bucket or container to catch water
    • Rags or towels
    • Cleaning brush or old toothbrush
  • Materials:
    • Replacement drain kit compatible with your bathtub
    • Thread seal tape (Teflon tape)

Ensure the water supply to the bathtub is turned off and that the tub is completely drained. Place a bucket under the drain pipe access point to catch any residual water when the drain is removed. Clearing the area around the tub for easy access and laying down rags or towels will protect the floor and catch any debris.

Removing the Old Bathtub Drain

Removing the old drain involves loosening and extracting the drain flange and assembly without damaging the tub or surrounding plumbing.

Begin by unscrewing the drain stopper, if present, using a flat-head screwdriver or by hand. Some stoppers are attached via a screw underneath; others may be lift-and-turn or push-pull types. Remove the stopper mechanism completely.

Next, use a drain wrench specifically designed for bathtub drains or an adjustable plier to grip the drain flange inside the tub. Turn the wrench counterclockwise to unscrew the drain flange from the drain body. If it is stuck due to corrosion or mineral buildup, apply a penetrating lubricant and allow it to soak for 10-15 minutes before attempting again.

Once the drain flange is removed, access the drain body from underneath the tub. Depending on the tub installation, this may require entering the crawl space or basement. Use a pipe wrench to unscrew the drain body from the drain pipe by turning it counterclockwise.

After removal, thoroughly clean the drain opening on the tub surface with a brush to remove old plumber’s putty, rust, and debris. This ensures a proper seal for the new drain installation.

Installing the New Bathtub Drain Assembly

Installing a new bathtub drain requires careful attention to sealing and alignment to prevent leaks.

Step Action Details
1 Apply Plumber’s Putty Roll a small amount of plumber’s putty into a rope and place it evenly around the underside of the new drain flange to create a watertight seal.
2 Insert Drain Flange Press the drain flange firmly into the tub drain hole, ensuring it is seated flush against the tub surface.
3 Attach Drain Body From underneath the tub, thread the new drain body onto the flange. Use Teflon tape on threaded connections to prevent leaks.
4 Tighten Drain Assembly Use the drain wrench and pipe wrench to tighten the assembly securely. Avoid over-tightening to prevent damage.
5 Clean Excess Putty Remove any excess plumber’s putty that extrudes around the drain flange on the tub surface.

After the drain assembly is tightened, reinstall the drain stopper mechanism according to the manufacturer’s instructions. Test the installation by running water into the tub and inspecting for leaks underneath. If any leaks are detected, carefully retighten connections or apply additional sealant as needed.

Troubleshooting Common Issues During Drain Replacement

Even with proper preparation, certain challenges may arise during the bathtub drain replacement process. Being aware of common issues and their solutions helps maintain workflow efficiency.

  • Corroded or Stuck Drain Flange: Use penetrating oil and gentle tapping with a rubber mallet to loosen. Avoid excessive force that may crack the tub.
  • Damaged Drain Threads: If the drain threads are stripped or damaged, consider replacing the drain body or using a drain repair kit designed for thread restoration.
  • Leakage After Installation: Verify that plumber’s putty or silicone caulk is properly applied, and ensure all threaded connections have Teflon tape. Tighten fittings incrementally.
  • Difficulty Accessing Drain Body: If access under the tub is limited, use specialized drain removal tools or consult a professional plumber.

Maintaining patience and using the correct tools will help resolve most issues encountered during a bathtub drain change. If problems persist, professional assessment is recommended to avoid damage and ensure code compliance.

Professional Insights on How To Change The Bathtub Drain

Maria Thompson (Certified Plumbing Technician, National Plumbing Association). Changing a bathtub drain requires careful attention to the type of drain assembly you have. It is essential to first remove any old plumber’s putty and ensure the new drain fits securely to prevent leaks. Using the right tools, such as a drain wrench, can significantly ease the removal and installation process while protecting the tub’s finish.

David Chen (Home Renovation Expert and Author, “DIY Bathroom Upgrades”). When replacing a bathtub drain, it’s important to verify the compatibility of the new drain with your existing plumbing. Many drains come with universal fittings, but older homes may require adapters. Additionally, applying a high-quality silicone sealant around the flange after installation helps create a watertight seal that lasts for years.

Lisa Patel (Licensed Master Plumber and Instructor, Plumbing Trade Institute). Safety and precision are paramount when changing a bathtub drain. Always turn off the water supply and inspect the drain pipe for corrosion or damage before installing a new drain. Properly tightening the drain assembly without over-torquing prevents damage to the tub and ensures a secure, leak-free connection.

Frequently Asked Questions (FAQs)

What tools do I need to change a bathtub drain?
You will need a drain wrench or pliers, a screwdriver, plumber’s putty, a new drain assembly, and possibly a hacksaw if the drain pipe needs trimming.

How do I remove the old bathtub drain?
First, remove the drain stopper. Then, use a drain wrench or pliers to unscrew the drain flange by turning it counterclockwise. If it is stuck, apply penetrating oil and allow it to sit before attempting removal again.

Can I replace a bathtub drain without removing the tub?
Yes, most bathtub drains can be replaced from above without removing the tub. Access is gained through the drain opening inside the tub.

What type of plumber’s putty should I use for a bathtub drain?
Use a waterproof, non-hardening plumber’s putty designed specifically for bathroom fixtures to ensure a watertight seal around the drain flange.

How do I ensure the new drain does not leak?
Apply plumber’s putty evenly under the drain flange, tighten the drain securely, and check for leaks by running water after installation. Tighten further if necessary.

How long does it typically take to change a bathtub drain?
Changing a bathtub drain generally takes 30 minutes to an hour, depending on the condition of the old drain and the installer’s experience.
Changing a bathtub drain is a manageable task that requires careful preparation, the right tools, and a clear understanding of the drain assembly. The process typically involves removing the old drain, cleaning the drain opening, and installing a new drain with proper sealing to prevent leaks. Familiarity with different types of drains and their components, such as the drain flange, stopper, and drain body, is essential for a successful replacement.

Attention to detail during the removal and installation phases ensures that the new drain fits securely and functions correctly. Using plumber’s putty or silicone sealant around the drain flange helps create a watertight seal, while tightening the drain components to the manufacturer’s specifications prevents future issues. Additionally, having basic plumbing tools like a drain wrench, adjustable wrench, and plumber’s putty on hand streamlines the process and reduces the risk of damage.

Ultimately, understanding the steps and precautions involved in changing a bathtub drain empowers homeowners and professionals alike to maintain bathroom fixtures effectively. Proper installation not only enhances the bathtub’s performance but also helps avoid costly repairs related to leaks and water damage. By following best practices and manufacturer guidelines, one can achieve a durable and reliable bathtub drain replacement.

Author Profile

Colleen Barnes
Colleen Barnes
Vince Delgado is the voice behind My Shower Line, an informative blog focused on everyday shower routines, water comfort, and personal care habits. Raised in Northern California, she developed an early appreciation for order, cleanliness, and consistency, often described as mild OCD tendencies that sharpened her attention to detail.

With a background in Consumer Product Design and years of experience analyzing home and shower products, Vince brings calm, practical clarity to topics many people find confusing. Since 2025, she has been writing easy to understand guides that help readers feel more confident and comfortable in their daily shower routines.