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Schluter Shower Drain: A Complete DIY Installation Guide (2026)

So, you're tackling a shower remodel and thinking about using a Schluter shower system? Excellent choice! These systems are known for their waterproofing capabilities and sleek, modern look. The heart of the system is the Schluter shower drain, and while it might seem intimidating to install, this guide will walk you through the entire DIY process step-by-step. By the end of this article, you'll be confident in your ability to install a Schluter shower drain and create a waterproof, beautiful shower that lasts for years. Let's get started!

Step 1: Gather Your Tools and Materials

Before you even think about touching your existing shower, gather everything you'll need. This will save you time and frustration later. Here's a comprehensive list:

• Schluter Shower Drain Kit: This includes the drain body, grate (various styles are available), and sometimes even Kerdi-Drain flange extensions. Be sure to select the correct flange material - PVC or ABS - to match your existing plumbing.
• Schluter Kerdi Membrane: This is the waterproofing membrane that integrates with the drain.
• Schluter Kerdi-Band: Waterproof sealing strip for corners and connections.
• Schluter Kerdi-Kereck: Pre-formed inside and outside corners for waterproofing.
• Thin-Set Mortar (Unmodified): Crucial for setting the Kerdi membrane and tile. Using modified thin-set can compromise the waterproofing.
• Trowel (Notched, Size Varies by Tile): Match the notch size to recommendations for your tile. A good starting point is a 1/4" x 1/4" notched trowel.
• Mixing Bucket and Drill with Mixing Paddle: For mixing the thin-set mortar.
• Measuring Tape: To accurately measure and cut materials.
• Utility Knife: For cutting the Kerdi membrane and Kerdi-Band.
• Pencil or Marker: For marking cut lines.
• Caulking Gun: For applying sealant where needed.
• Schluter All-Set Mortar: Highly Recommended for installing the shower pan and bonding over the Kerdi Membrane.
• Gloves and Safety Glasses: Always protect yourself!
• Level: Essential for ensuring proper slope to the drain.
• Float: to flatten the surface of your installation.
• Small Paint Brush: To apply thin-set to smaller areas.

Step 2: Remove the Existing Shower (Demolition Time!)

Okay, this is the messy part! Put on your safety glasses and gloves and prepare to get a little dusty.

1. Turn Off the Water Supply: Before you start swinging a hammer, shut off the water supply to the shower.
2. Remove Existing Fixtures: Carefully remove all shower fixtures, including the showerhead, faucet, and any valves.
3. Remove the Old Shower Walls and Floor: This will likely involve chiseling, prying, and a whole lot of elbow grease. Be careful not to damage the plumbing. If you are removing existing tile, consider using a demolition hammer with a chisel attachment if it's difficult to remove.
4. Clean and Inspect the Subfloor: Once everything is removed, thoroughly clean the subfloor and inspect it for any damage. Repair any damaged areas before proceeding. Make sure the floor is level, as this is essential for a proper installation.

Step 3: Install the Schluter Shower Pan (Pre-Sloped or Custom)

This step involves creating the proper slope towards the drain. You have two options: a pre-sloped Schluter shower tray (Kerdi-Shower-LT or Kerdi-Shower-ST) or a custom mortar bed. We will focus on the pre-sloped tray option.

1. Dry-Fit the Shower Tray: Place the shower tray on the subfloor and ensure it fits properly within the shower area. You may need to trim the edges to fit your specific dimensions.
2. Mark the Drain Location: Mark the location of the drain opening on the subfloor.
3. Apply Thin-Set Mortar: Using the unmodified thin-set mortar, apply a generous layer to the subfloor where the tray will sit. Use the appropriate notched trowel to create even ridges. Schluter All-Set is highly recommended for this step.
4. Set the Shower Tray: Carefully place the shower tray onto the thin-set mortar, aligning the drain opening with the marked location. Press down firmly to ensure good contact with the mortar.
5. Check for Level: Use a level to check that the tray is properly sloped towards the drain. Make adjustments as needed while the mortar is still wet.
6. Let the Mortar Cure: Allow the thin-set mortar to cure completely according to the manufacturer's instructions (usually 24-48 hours).

Step 4: Connect the Schluter Shower Drain to the Plumbing

Now it's time to connect the drain body to your existing plumbing. This step might require some plumbing knowledge or the help of a professional.

1. Determine Your Drain Type: Note if you are working with a PVC or ABS drain pipe to ensure your Schluter drain flange matches the correct material.
2. Insert the Drain Body: Insert the Schluter shower drain body into the drain opening in the shower tray.
3. Connect to the Drain Pipe: Connect the drain body to the existing drain pipe using the appropriate fittings and primer/glue (for PVC or ABS). Ensure a watertight seal. Use pipe dope on threaded connections.
4. Test for Leaks: Once the connection is complete, temporarily turn on the water supply and check for any leaks around the drain connection. Fix any leaks immediately.

Step 5: Waterproofing with Kerdi Membrane and Kerdi-Band

This is the most crucial step for a waterproof shower. The Kerdi membrane and Kerdi-Band will create a watertight barrier.

1. Cut the Kerdi Membrane: Measure and cut the Kerdi membrane to fit the shower walls and floor. Overlap the seams by at least 2 inches. The Kerdi membrane should extend a few inches beyond the shower area onto the surrounding floor.
2. Apply Thin-Set Mortar: Using the unmodified thin-set mortar, apply a generous layer to the shower walls and floor. Use the appropriate notched trowel to create even ridges.
3. Install the Kerdi Membrane: Carefully place the Kerdi membrane onto the thin-set mortar, pressing down firmly to ensure good contact. Use a clean, dry roller to smooth out any air bubbles and ensure a strong bond.
4. Apply Kerdi-Band to Seams and Corners: Use Kerdi-Band to seal all seams and corners. Apply a thin layer of unmodified thin-set mortar to the back of the Kerdi-Band and press it firmly onto the seams and corners. Overlap the Kerdi membrane by at least 2 inches.
5. Install Kerdi-Kereck in Corners: For inside and outside corners, use pre-formed Kerdi-Kereck corners. Apply unmodified thin-set mortar to the back of the Kerdi-Kereck and press it firmly into the corners, overlapping the Kerdi membrane.
6. Seal the Drain Flange: The Kerdi membrane must be carefully sealed to the Schluter shower drain flange. Cut a circular piece of Kerdi membrane slightly larger than the drain flange. Cut a hole in the center of the circle to fit around the drain opening. Apply unmodified thin-set mortar to the drain flange and press the Kerdi membrane onto the flange, ensuring a watertight seal.

Step 6: Tile the Shower

Now for the fun part: adding the tile!

1. Apply Thin-Set Mortar: Using the appropriate notched trowel, apply unmodified thin-set mortar to the Kerdi membrane. Choose a trowel size recommended for your tile.
2. Set the Tile: Carefully set the tile onto the thin-set mortar, using spacers to ensure even grout lines.
3. Cut Tiles as Needed: Use a tile saw to cut tiles to fit around corners, edges, and the drain.
4. Let the Mortar Cure: Allow the thin-set mortar to cure completely according to the manufacturer's instructions.
5. Grout the Tile: Once the mortar is cured, apply grout to the tile joints, following the manufacturer's instructions.
6. Seal the Grout: After the grout has cured, seal it with a grout sealer to protect it from water damage and staining.

Step 7: Install the Schluter Shower Drain Grate

Almost there! The final step is to install the Schluter shower drain grate.

1. Choose Your Grate Style: Schluter offers a variety of grate styles, including linear drains, point drains, and different finishes. Choose the grate that best suits your style and needs.
2. Install the Grate: Simply place the grate into the drain body. The grate should fit snugly and securely. Some grates may require screws or other fasteners.

Step 8: Sealant and Finishing Touches

1. Apply Sealant: Apply a bead of sealant around the perimeter of the shower where the tile meets the walls and floor. This will further prevent water from seeping behind the tile.
2. Install Fixtures: Reinstall the shower fixtures, including the showerhead, faucet, and valves.
3. Clean Up: Clean up any excess grout, mortar, or sealant.
4. Admire Your Work: Step back and admire your beautifully tiled, waterproof Schluter shower!

Tools for the Job

Installing a Schluter shower drain requires the right tools. Below are two product recommendations.

1. Schluter All-Set Modified Thin-Set Mortar: It is recommended for installing a shower pan system and providing a great bond over the Kerdi Membrane.
2. Schluter Kerdi Membrane: With its waterproof properties, the Kerdi Membrane is essential to creating a water-tight system.

Pro-Tips / FAQ Section

• Pre-Sloped Shower Pan vs. Custom Mortar Bed: While a pre-sloped shower pan is easier for DIYers, a custom mortar bed allows for more flexibility in terms of shower size and shape.
• Choosing the Right Thin-Set Mortar: Always use unmodified thin-set mortar with the Kerdi system. Modified thin-set mortar can react with the Kerdi membrane and compromise its waterproofing capabilities.
• Cutting the Kerdi Membrane: Use a sharp utility knife and a straight edge to ensure clean, accurate cuts.
• Testing for Leaks: After installing the Kerdi membrane, it's a good idea to perform a flood test to ensure that the shower is completely waterproof. Plug the drain and fill the shower with a few inches of water. Let it sit for 24 hours and check for any leaks in the surrounding areas.
• What if my drain is leaking after installation? The culprit is almost always the pipe connection. Double-check all fittings and ensure they are properly glued and sealed. If necessary, consult a plumber.
• Can I install a Schluter shower drain myself? Absolutely! With careful planning, the right tools, and this comprehensive guide, you can successfully install a Schluter shower drain and create a beautiful, waterproof shower. However, if you are not comfortable with plumbing or tiling, it's always best to consult a professional.

Encouraging Conclusion

Congratulations! You've successfully installed a Schluter shower drain and created a beautifully waterproof shower. It might seem intimidating at first, but by following these steps and taking your time, you can achieve professional-quality results. Enjoy your new shower for years to come, knowing that you've built it to last. You've not only upgraded your bathroom but also added value to your home. So, take a long, hot shower and bask in the glory of your accomplishment! You did it! <br><a href="https://www.amazon.com/s?k=schluter shower drain&sort=price-asc-rank&tag=bestbathroomrenovation-20">[Shop Budget-Friendly schluter shower drain on Amazon.]</a><br>