
Raising a shower drain is a practical home improvement task that can help prevent water pooling and improve drainage efficiency. Whether you're dealing with an improperly installed drain or simply need to adjust its height during a bathroom renovation, the process involves careful planning and execution. Typically, this task requires removing the existing drain assembly, adjusting the plumbing beneath the shower base, and ensuring the new drain height aligns with the slope of the shower floor for proper water flow. By following the right steps and using the appropriate tools, you can successfully raise a shower drain to enhance both functionality and aesthetics in your bathroom.
| Characteristics | Values |
|---|---|
| Purpose | To elevate a shower drain for proper water flow and prevent pooling. |
| Tools Required | Utility knife, pry bar, screwdriver, drill, silicone caulk, new drain kit, leveling tools. |
| Materials Needed | New shower drain assembly, silicone sealant, mortar or thin-set, tile adhesive. |
| Steps | 1. Remove existing drain cover and grate. 2. Disconnect drain pipe. 3. Raise drain height using mortar or thin-set. 4. Install new drain assembly. 5. Seal with silicone caulk. 6. Reinstall tiles or flooring. |
| Considerations | Ensure proper slope for drainage (1/4 inch per foot). Check local plumbing codes. |
| Common Issues | Improper sealing leading to leaks. Incorrect height causing water pooling. |
| Alternative Methods | Using a shower drain extender kit or adjustable drain systems. |
| Time Required | 2-4 hours (depending on complexity). |
| Difficulty Level | Intermediate to advanced DIY. |
| Cost | $50-$150 (depending on materials and tools). |
| Maintenance Tips | Regularly clean drain to prevent clogs. Inspect sealant for cracks annually. |
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What You'll Learn
- Gather Tools & Materials: Pliers, screwdriver, new drain kit, silicone caulk, putty knife, cleaning supplies
- Remove Old Drain: Pry off the cover, unscrew the drain, clean the area thoroughly
- Prepare the Surface: Smooth rough edges, apply plumber’s putty or silicone for a tight seal
- Install New Drain: Insert drain, tighten from below, secure with screws, wipe excess caulk
- Test for Leaks: Run water, check for leaks, reapply sealant if necessary, let it dry

Gather Tools & Materials: Pliers, screwdriver, new drain kit, silicone caulk, putty knife, cleaning supplies
Before you begin raising your shower drain, it's essential to gather all the necessary tools and materials to ensure a smooth and efficient process. Start by collecting a pair of pliers, which will be crucial for gripping and turning the drain components securely. You’ll also need a screwdriver, preferably one with interchangeable tips, to remove any screws holding the existing drain in place. These tools will help you disassemble the old drain without causing damage to the surrounding shower floor. Having them within easy reach will save you time and frustration during the project.
Next, acquire a new drain kit that matches your shower’s specifications. Ensure the kit includes a raised drain body or an extender if your current drain needs additional height. Check the manufacturer’s instructions to confirm compatibility with your shower pan or tile floor. Alongside the drain kit, purchase silicone caulk, which is vital for sealing the new drain to prevent water leaks. Silicone caulk is waterproof and flexible, making it ideal for shower applications. Don’t forget to pick a color that matches your shower floor for a seamless finish.
A putty knife is another essential tool for this project. It will be used to apply and smooth the silicone caulk around the drain, ensuring a tight seal. Additionally, the putty knife can help remove old caulk or debris from the area before installing the new drain. Choose a putty knife with a flexible blade for better control and precision. This tool will play a key role in achieving a professional-looking result.
Lastly, gather cleaning supplies to prepare the area before and after installation. You’ll need a mild detergent, a scrub brush, and a cloth to clean the shower floor thoroughly, removing any soap scum, mildew, or old caulk residue. A clean surface ensures better adhesion of the new drain and caulk. After installation, these supplies will also help you tidy up any excess caulk or debris, leaving your shower looking refreshed. Having all these tools and materials ready beforehand will streamline the process of raising your shower drain.
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Remove Old Drain: Pry off the cover, unscrew the drain, clean the area thoroughly
To begin the process of raising a shower drain, the first step is to remove the old drain assembly. Start by prying off the drain cover, which is typically held in place by a combination of screws, clips, or adhesive. Use a flathead screwdriver or a putty knife to gently lift the edges of the cover, being careful not to damage the surrounding shower floor. If the cover is screwed in, locate and remove the screws before lifting it off. Some covers may require a bit more force, but avoid using excessive pressure to prevent cracking or chipping the shower surface.
Once the cover is removed, you’ll expose the drain body. The next step is to unscrew the drain from the shower pan or pipe below. This usually involves turning the drain counterclockwise, but some drains may have a locking mechanism or additional screws that need to be removed first. If the drain feels stuck due to corrosion, rust, or years of buildup, apply a penetrating oil like WD-40 around the edges and let it sit for 10-15 minutes before attempting to unscrew it again. Use a pair of pliers or a drain key tool for better grip if needed, but be cautious not to overtighten or damage the threads.
After the drain is unscrewed and removed, take the time to clean the area thoroughly. This step is crucial to ensure a proper fit for the new drain assembly and to prevent future issues. Start by scraping away any old caulk, grout, or debris from the shower floor around the drain opening. Use a wire brush or a scouring pad to remove stubborn residue, and consider using a mild detergent or vinegar solution to dissolve soap scum or mineral deposits. Rinse the area well and allow it to dry completely before proceeding.
Inspect the drain opening and the pipe below for any signs of damage, such as cracks, leaks, or clogs. If the pipe is clogged, use a plumber’s snake or a drain cleaning tool to clear the blockage. If the pipe or shower pan is damaged, address these issues before installing the new drain to avoid further complications. Ensuring the area is clean and in good condition will make the installation of the raised drain smoother and more effective.
Finally, with the old drain removed and the area cleaned, you’re ready to proceed with raising the shower drain. This preparatory step is essential for a successful installation, as it ensures a stable base and proper alignment for the new drain assembly. Take your time during this phase, as thoroughness now will save you from potential headaches later. With the old drain out of the way and the area prepped, you can move on to the next steps of measuring, selecting the appropriate extender, and installing the new drain components.
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Prepare the Surface: Smooth rough edges, apply plumber’s putty or silicone for a tight seal
Before you begin raising your shower drain, proper surface preparation is crucial for a watertight seal and long-lasting results. Start by smoothing any rough edges around the existing drain opening. Use sandpaper or a file to gently remove burrs, sharp edges, or irregularities left from cutting the shower pan or tile. This ensures the new drain assembly sits flush and prevents gaps where water could seep through. Pay close attention to the edges of the drain hole, as even small imperfections can compromise the seal.
Once the surface is smooth, thoroughly clean the area to ensure optimal adhesion. Remove any dust, debris, or soap scum using a damp cloth or mild detergent. For stubborn residue, isopropyl alcohol can be used to degrease the surface. Allow the area to dry completely before proceeding, as moisture can interfere with the bonding of sealants.
Next, apply plumber’s putty or silicone sealant to create a watertight barrier. If using plumber’s putty, roll a small rope of putty between your hands and press it firmly around the underside of the drain flange. Ensure the putty is evenly distributed and forms a continuous bead. For silicone sealant, cut the tip of the cartridge at a 45-degree angle and load it into a caulking gun. Apply a smooth, consistent bead of silicone around the drain flange, taking care not to leave gaps or excess material.
When positioning the drain assembly, press it firmly into place to ensure the putty or silicone makes full contact with both the drain and the shower surface. Use a putty knife or your finger (wearing a glove) to smooth the sealant, removing any excess. Double-check that the drain is level and aligned with the surrounding tile or shower pan.
Finally, allow the sealant to cure according to the manufacturer’s instructions before using the shower. This typically takes several hours for plumber’s putty and up to 24 hours for silicone. Properly preparing the surface and applying the sealant correctly will ensure a secure, leak-free installation when raising your shower drain.
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Install New Drain: Insert drain, tighten from below, secure with screws, wipe excess caulk
When installing a new shower drain to raise its height, the first step is to insert the new drain assembly into the shower pan or floor opening. Ensure the drain is properly aligned with the existing plumbing and that the rubber gasket or sealing washer is in place to prevent leaks. Gently press the drain down until it sits flush with the shower floor, but avoid forcing it, as this could damage the seal or the surrounding material. The goal is to have the drain securely seated in the opening before proceeding to the next steps.
Once the drain is inserted, move beneath the shower floor to tighten it from below. Most shower drains come with a locking nut or collar that secures the drain in place. Use an adjustable wrench or pliers to tighten this nut, ensuring the drain is held firmly against the shower floor. Be cautious not to overtighten, as this can crack the shower pan or damage the drain threads. Tighten the nut just enough to create a watertight seal, and double-check that the drain remains level and flush with the surface above.
After tightening the drain from below, return to the shower floor and secure the drain further with screws if your drain assembly includes them. Many drains have screw holes designed to attach the drain to the shower pan or floor for added stability. Use a screwdriver to insert the screws and tighten them securely. This step ensures the drain remains in place and reduces the risk of movement or shifting over time. Always follow the manufacturer’s instructions for screw placement and torque to avoid damaging the drain or the shower floor.
Finally, apply a bead of waterproof caulk around the edges of the drain to create a watertight seal and prevent water from seeping beneath the drain. Use a caulk gun to apply a smooth, even line of caulk, ensuring full coverage around the drain’s perimeter. Once applied, use a damp cloth or caulk-smoothing tool to wipe away any excess caulk and create a clean, professional finish. Allow the caulk to dry completely according to the manufacturer’s instructions before using the shower to ensure the seal is fully cured and effective. This step is crucial for preventing leaks and maintaining the integrity of the shower drain installation.
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Test for Leaks: Run water, check for leaks, reapply sealant if necessary, let it dry
Once you’ve raised your shower drain to the correct height, the next critical step is to test for leaks to ensure the installation is watertight. Begin by running water into the shower drain at a steady flow. Observe the area around the drain, including the seams and connections, for any signs of water seepage. Pay close attention to the joint between the drain assembly and the shower pan or floor, as this is a common area for leaks. If you notice any water escaping, it’s a clear indication that the sealant needs to be reapplied or adjusted.
After identifying a leak, reapply the sealant as necessary. Use a high-quality silicone or plumber’s putty, ensuring it is compatible with your shower materials. Clean the area thoroughly before applying the sealant to create a strong bond. Apply the sealant evenly around the drain, pressing it firmly into the gap to fill any voids. Smooth the sealant with a damp finger or tool to ensure a clean finish and proper adhesion. Be generous with the sealant, as it’s better to have too much than too little when preventing leaks.
Once the sealant is reapplied, let it dry completely according to the manufacturer’s instructions. This drying time is crucial, as prematurely testing the drain again can compromise the sealant’s effectiveness. Avoid running water or stepping on the area until the sealant is fully cured. Depending on the product, this could take anywhere from a few hours to overnight. Patience during this step ensures a durable and leak-free seal.
After the sealant has dried, run water through the drain again to perform a second leak test. This time, inspect the area even more closely, as some leaks may be subtle. If you still notice water seeping through, repeat the process of cleaning, reapplying sealant, and allowing it to dry. It’s better to address leaks now rather than after the shower is in full use, as repairs can become more complicated later.
Finally, once you’re confident there are no leaks, proceed with the remaining steps of your shower installation. Regularly inspect the drain and sealant over the next few weeks to ensure long-term performance. Properly testing for leaks and addressing them promptly is essential for maintaining a functional and watertight shower drain.
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Frequently asked questions
You’ll need a reciprocating saw or hacksaw, PVC pipe, PVC primer and cement, a new drain flange, and basic plumbing tools like a wrench and screwdriver.
Measure the height difference and use PVC pipe to extend the drain pipe vertically. Ensure the slope is 1/4 inch per foot toward the trap for proper drainage.
Yes, by using a shower drain extension kit or adding PVC pipe above the existing drain. However, if the slab is too low, you may need to cut into it or consult a professional.











































