
Changing a bathtub drain to a shower drain is a practical home improvement project that can enhance your bathroom's functionality and aesthetics. This process involves replacing the existing bathtub drain assembly with a shower-compatible drain, which typically includes removing the old drain components, installing a new shower drain body, and ensuring proper sealing to prevent leaks. While it requires basic plumbing skills and tools, such as a wrench, screwdriver, and plumber’s putty, following a step-by-step guide can make the task manageable for DIY enthusiasts. Upgrading to a shower drain not only modernizes your bathroom but also improves water drainage efficiency, making it a worthwhile endeavor for homeowners looking to refresh their space.
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What You'll Learn
- Remove Old Drain: Turn off water, remove overflow plate, unscrew existing drain using a drain key
- Install Shower Drain: Choose a compatible shower drain, align with pipe, secure tightly with plumber’s putty
- Adjust Plumbing: Modify pipes if needed, ensure proper slope for drainage, use PVC or copper fittings
- Seal and Test: Apply silicone caulk around drain edges, let dry, run water to check for leaks
- Finish Installation: Reattach overflow plate, turn water back on, test shower functionality thoroughly

Remove Old Drain: Turn off water, remove overflow plate, unscrew existing drain using a drain key
Before you begin the process of converting your bathtub drain to a shower drain, it's essential to start by removing the old drain assembly. The first step in this process is to turn off the water supply to the bathtub. Locate the shut-off valves under the tub or in the basement, and turn them clockwise to shut off the water flow. If there are no individual shut-off valves, you may need to turn off the main water supply to your home. This precautionary measure ensures that you can work on the drain without any water interference or accidents.
With the water supply securely turned off, the next step is to remove the overflow plate. The overflow plate is typically located on the front of the tub, near the top, and is held in place by one or two screws. Use a screwdriver to carefully remove these screws, taking care not to strip them. Once the screws are removed, gently pry the overflow plate away from the tub using a flathead screwdriver or a putty knife. Be cautious not to damage the surrounding area or the tub's finish. Behind the overflow plate, you'll find the overflow gasket and the linkage that connects to the drain mechanism. Take note of how these parts are assembled, as you'll need to reinstall them later.
Now that the overflow plate is removed, it's time to focus on the drain itself. The existing drain is typically secured by a drain key, which is a specialized tool designed to grip and turn the drain assembly. If you don't have a drain key, you can often use a pair of pliers or a wrench, but be careful not to damage the drain or the surrounding tub surface. Place the drain key or your chosen tool onto the drain's key slot, which is usually located just below the drain's lip. Apply firm, steady pressure as you turn the drain counterclockwise to unscrew it from the tub. If the drain is stubborn or difficult to turn, you may need to use a penetrating oil or lubricant to help loosen it.
As you unscrew the existing drain, be prepared for some water to drain from the tub, even if you've turned off the water supply. Have a bucket or towel ready to catch any residual water. Once the drain is loose, carefully lift it out of the tub, taking note of any gaskets, washers, or other components that may be attached. Inspect the drain opening and the surrounding area for any signs of damage, corrosion, or debris. If necessary, clean the area thoroughly before proceeding with the installation of the new shower drain. Remember to keep the old drain and its components, as you may need to reference them during the installation process.
After successfully removing the old drain, take a moment to assess the condition of the drain threads and the tub's drain opening. If the threads are damaged or corroded, you may need to repair or replace them before installing the new shower drain. Additionally, ensure that the drain opening is clean, smooth, and free of any debris or old plumber's putty. This preparation will help ensure a secure and watertight seal when you install the new shower drain assembly. With the old drain removed and the area prepared, you're now ready to move on to the next steps in converting your bathtub drain to a shower drain.
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Install Shower Drain: Choose a compatible shower drain, align with pipe, secure tightly with plumber’s putty
When transitioning from a bathtub drain to a shower drain, the first step is to choose a compatible shower drain. Ensure the drain you select matches the size and type of your existing plumbing. Most shower drains are designed to fit standard 2-inch pipes, but it’s crucial to measure the diameter of your current drain pipe to avoid compatibility issues. Additionally, consider the style and material of the drain to complement your bathroom’s aesthetic. Common materials include brass, stainless steel, and plastic, each offering different levels of durability and appearance.
Once you have the appropriate shower drain, the next step is to align it with the existing pipe. Remove the old bathtub drain by unscrewing or prying it out, depending on its installation method. Clean the area thoroughly to ensure a secure fit for the new drain. Position the shower drain directly over the pipe, ensuring it sits flush with the shower floor. Proper alignment is critical to prevent leaks and ensure efficient water flow. If the drain has a threaded connection, screw it into place by hand before tightening it with a wrench.
After aligning the shower drain, secure it tightly using plumber’s putty. Roll a small amount of putty into a rope-like shape and apply it evenly around the underside of the drain flange. Press the drain firmly into place, allowing the putty to create a watertight seal between the drain and the shower floor. Wipe away any excess putty with a damp cloth to maintain a clean appearance. Plumber’s putty is ideal for this application because it remains pliable and resistant to water, ensuring a long-lasting seal.
Finally, test the installation by running water through the shower drain to check for leaks. If water pools around the drain or seeps beneath it, remove the drain, reapply plumber’s putty, and reinsert it, ensuring a tight seal. Once confirmed leak-free, secure any additional components, such as a strainer or cover, according to the manufacturer’s instructions. This process ensures a functional and aesthetically pleasing transition from a bathtub drain to a shower drain.
Throughout the installation, prioritize safety by turning off the water supply and wearing protective gear if necessary. If you encounter difficulties or if your plumbing setup is unconventional, consult a professional plumber to avoid complications. By carefully selecting a compatible drain, aligning it with the pipe, and securing it with plumber’s putty, you can successfully complete this DIY project and enjoy your new shower drain.
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Adjust Plumbing: Modify pipes if needed, ensure proper slope for drainage, use PVC or copper fittings
When adjusting plumbing to convert a bathtub drain to a shower drain, the first step is to assess the existing pipe layout. Bathtub drains typically have a deeper trap and a different configuration compared to shower drains, which require a more horizontal setup. If the existing pipes are not compatible with a shower drain, you’ll need to modify them. Start by turning off the water supply and removing the old bathtub drain assembly. Inspect the pipes to determine if they can be reconfigured or if new pipes are necessary. Measure the distance from the drain location to the main stack or vent to ensure proper alignment for the new shower drain.
Ensuring the proper slope for drainage is critical to prevent water pooling or slow drainage. Shower drains require a minimum slope of 1/4 inch per foot toward the drain. Use a level to check the slope of the existing pipes and adjust as needed. If the pipes are too level or sloped incorrectly, you may need to cut and reposition them. PVC pipes are easier to work with for this purpose due to their lightweight nature and ease of cutting, but copper fittings can also be used if they match the existing plumbing system. Secure the pipes in place with hangers or straps to maintain the correct slope.
Modifying pipes often involves cutting and adding new sections to achieve the desired layout. Use a hacksaw or PVC cutter to remove sections of pipe that are not needed or incorrectly positioned. When adding new pipes, ensure they align with the shower drain location and maintain the proper slope. PVC pipes can be joined using primer and solvent cement, while copper pipes require soldering or compression fittings. Always follow local plumbing codes and manufacturer instructions for secure connections. Test the joints for leaks by running water through the system before finalizing the installation.
If the existing pipes are made of a different material than what you’re adding, such as transitioning from copper to PVC, use appropriate fittings to ensure compatibility. For example, a copper-to-PVC adapter can be used to connect the two materials. Ensure all fittings are tightly secured to prevent leaks. Additionally, consider the height of the shower drain relative to the floor to ensure it aligns with the shower pan or tile. Adjust the pipe length as needed to achieve the correct height while maintaining the proper slope.
Finally, install the shower drain assembly according to the manufacturer’s instructions. This typically involves attaching the drain body to the pipe and securing it in place with screws or adhesive. Ensure the drain is level and flush with the shower floor to allow for proper water flow. Once the drain is installed, reconnect the P-trap and vent pipe to complete the plumbing system. Turn the water supply back on and test the shower drain to ensure it functions correctly, checking for any leaks or drainage issues. Properly adjusted plumbing will ensure a smooth transition from a bathtub to a shower drain, providing efficient and reliable performance.
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Seal and Test: Apply silicone caulk around drain edges, let dry, run water to check for leaks
Once you’ve installed the new shower drain assembly, the next critical step is to seal and test the drain to ensure it is watertight and leak-free. Begin by applying a high-quality silicone caulk around the edges of the drain where it meets the shower floor or tub surface. Silicone caulk is ideal for this purpose because it is waterproof, flexible, and resistant to mold and mildew, making it perfect for wet environments like showers. Use a caulking gun to apply a smooth, consistent bead of caulk, ensuring it adheres well to both the drain flange and the surrounding surface. Smooth the caulk with a damp finger or a caulk-smoothing tool to create a neat, professional finish and ensure proper adhesion.
After applying the caulk, allow it to dry completely according to the manufacturer’s instructions. Drying times can vary depending on the brand and environmental conditions, but it typically takes several hours or overnight for the caulk to fully cure. Avoid rushing this step, as improperly dried caulk can lead to leaks or gaps in the seal. During the drying process, ensure the area remains undisturbed to prevent smudging or shifting the caulk. Proper drying is essential for creating a durable, watertight barrier around the drain.
Once the caulk is fully dry, it’s time to test for leaks. Start by running water into the shower or tub and letting it pool around the drain. Observe the edges of the drain closely for any signs of water seeping through or beneath the caulk. If you notice any leaks, stop the test, allow the area to dry, and reapply caulk to the problem areas. It’s better to address leaks now rather than after the shower is in full use, as water damage can be costly to repair.
For a more thorough test, consider filling the shower or tub with a few inches of water and letting it sit for 15–20 minutes. This simulates prolonged water exposure and helps reveal even minor leaks. After the test, inspect the area beneath the shower or tub (if accessible) for any signs of moisture. If the area remains dry, the seal is likely secure, and you can proceed with confidence.
Finally, after confirming there are no leaks, clean up any excess water and ensure the area is dry before using the shower. Regularly inspect the caulked area in the future for any signs of wear or damage, as silicone caulk can degrade over time. By following these steps to seal and test the drain, you’ll ensure a leak-free shower conversion and protect your bathroom from potential water damage.
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Finish Installation: Reattach overflow plate, turn water back on, test shower functionality thoroughly
Once the new shower drain assembly is securely installed, it’s time to finish the installation by reattaching the overflow plate. Begin by aligning the overflow plate with the existing holes in the tub. Ensure the plate sits flush against the tub surface to prevent leaks. Secure the plate using the provided screws, tightening them firmly but being careful not to overtighten, as this could damage the tub or strip the threads. Double-check that the plate is level and properly seated before moving on to the next step.
With the overflow plate reattached, you can now turn the water supply back on. Locate the shut-off valves under the tub or near the main water supply and slowly turn them back to the open position. Allow the water to flow into the tub and shower system, checking for any leaks around the newly installed drain and overflow plate. If you notice any leaks, turn the water off again and tighten the connections as needed before retesting.
Once the water is running smoothly without leaks, it’s crucial to test the shower functionality thoroughly. Start by running the shower at various temperatures and pressures to ensure the water drains properly through the new shower drain. Check that the overflow mechanism works correctly by filling the tub partially and observing whether water drains through the overflow holes as intended. Pay attention to the drainage speed—it should be efficient without any standing water remaining in the tub.
Next, test the showerhead and faucet operation to ensure they work seamlessly with the new drain system. Verify that there are no clogs or blockages in the drain by pouring a bucket of water into the tub and observing how quickly it drains. If the water drains slowly, inspect the drain for debris or installation issues. Additionally, check the seals and gaskets around the drain and overflow plate to ensure they are watertight and functioning properly.
Finally, conduct a thorough inspection of the entire setup. Look for any signs of moisture or water damage around the tub, walls, and floor. Ensure all components are secure and functioning as expected. If everything checks out, your shower is ready for use. Regular maintenance, such as cleaning the drain and overflow plate, will help ensure long-term functionality and prevent future issues. With these steps completed, you’ve successfully converted a bathtub drain to a shower drain, enhancing your bathroom’s utility and convenience.
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Frequently asked questions
Yes, you can convert a bathtub drain to a shower drain by installing a shower drain kit. This typically involves removing the existing bathtub drain and replacing it with a shower drain assembly, which includes a strainer and a drain body designed for standing water.
You’ll need basic tools such as a screwdriver, pliers, a wrench, a utility knife, and possibly a drill. Additionally, you may need a drain key or a screwdriver specifically designed for removing bathtub drains.
While it’s possible to do it yourself if you’re handy, hiring a plumber ensures the job is done correctly, especially if you encounter plumbing complications or need to modify the existing pipes.
In most cases, the existing plumbing can be adapted for a shower drain. However, if the drain pipe is too high or the configuration doesn’t align, you may need to adjust the plumbing, which could require professional assistance.
Choose a shower drain that fits your tub’s existing drain hole size and matches your bathroom’s style. Common options include screw-on drains, drop-in drains, or tileable drains for a seamless look. Ensure it’s compatible with your plumbing setup.











































