Transforming your bathroom into a modern, accessible space is now possible with the KERDI Curbless Shower. This innovative product from Schluter Systems allows you to create a seamless, barrier-free shower experience. Whether you’re a DIY enthusiast or hiring a professional, installing a KERDI Curbless Shower can be an exciting project. This comprehensive guide will walk you through the process, ensuring a sturdy, waterproof, and aesthetically pleasing result.
Before diving into the installation, understand that a KERDI Curbless Shower requires careful planning and precise execution. You’ll need to consider the size and layout of your shower, the type of flooring you’ll use, and the drainage system. This guide will provide a step-by-step approach, using clear language and helpful tips to make your installation successful.
Planning and Prep Work
The planning phase is crucial to the success of your KERDI Curbless Shower installation. You’ll need to create a detailed layout, gather all necessary tools and materials, and prepare your shower area.
Start by determining the size and shape of your shower. Measure the space and sketch a layout, including the placement of the drain and any barriers. Consider using a shower designer tool, like Schluter’s ShowerCAD, to help create a precision layout.
Gathering Tools and Materials
Assemble all the required tools and materials before beginning the installation. Here’s a checklist to help you:
- KERDI-Board and KERDI-Strip
- KERDI-Kerl linear drainage system
- Waterproof membrane (KERDI-WA or KERDI-WA-XL)
- Thinset mortar
- Tile adhesive
- Tiles and tile nippers
- Trowel (1/4″ x 1/8″) and (3/8″ x 1/8″)
- Notched trowel
- Grout Float
- Tape measure and levels
- Jigsaw and drill with masonry bit
- Cutting tools (wet saw or nippers for tiles)
Preparing the Shower Area
Before installing the KERDI Curbless Shower, ensure the subfloor is clean, dry, and free of debris. If necessary, repair any damage or cracks, and allow the surface to dry completely. Check the subfloor’s flatness using a level; if it’s not flat, use self-leveling concrete to create a smooth surface.
Mark the layout on the subfloor using the planned dimensions. The drain should be centered along the longest wall, preferably under the showerhead for optimal water flow.
Installing the KERDI-Board
The KERDI-Board serves as a stable base for your tile installation and provides structure to the shower’s sloped surface. Start by installing the KERDI-Strip around the perimeter, creating a waterproof barrier.
Begin installing the KERDI-Board at the lowest point of the shower, following the marked layout. Use the 3/8″ x 1/8″ trowel to apply thinset mortar to the subfloor, then press the KERDI-Board into place. Ensure the board’s edges are flush with the KERDI-Strip and create a slight slope towards the drain.
Installing the KERDI-Kerl Drain
Installing the KERDI-Kerl drain is a critical step in creating a functional curbless shower. Start by marking the drain’s location on the KERDI-Board, ensuring it’s centered and at the lowest point. Using a jigsaw or drill with a masonry bit, cut the necessary hole in the KERDI-Board.
Insert the KERDI-Kerl drain assembly through the hole, ensuring the treads align with the KERDI-Board’s grooves. Secure the drain using screws provided in the kit, and cover the drain with the supplied membrane protector.
Applying the Waterproof Membrane
Apply the waterproof membrane (KERDI-WA or KERDI-WA-XL) over the KERDI-Board and KERDI-Strip, creating a watertight barrier. Start at the lowest point, working your way up and across the shower. Ensure the membrane overlaps the edges of the KERDI-Strip by at least 2 inches.
Use the 1/4″ x 1/8″ trowel to apply thin seams of thinset mortar along the overlaps and perforations in the membrane. Press the membrane firmly into the mortar, creating a tight bond. Allow the membrane to cure according to the manufacturer’s instructions before installing tile.
Tilting and Grouting
With the waterproofing in place, it’s time to install the tile and create your desired look. Choose a leveling system, like Schluter’s KERDI-HEAT, to ensure a consistent slope throughout the shower. Follow the manufacturer’s guidelines for applying the leveling system, allowing it to cure before tile installation.
Apply tile adhesive or thinset mortar to the KERDI-Board using a notched trowel. Begin tiling at the lowest point, working your way up and across the shower. Make sure the tiles are evenly spaced and properly aligned with the drain and walls. Allow the tile to cure according to the manufacturer’s instructions before grouting.
Before grouting, apply a tak-off coat to the tile surface using a grout float. This will prevent the grout from staining the tiles. Mix the grout according to the manufacturer’s guidelines, then apply it to the tile joints using a grout float, working diagonally to force the grout into the joints. Allow the grout to set, then remove any excess with a damp sponge. Follow the manufacturer’s recommendations for curing and sealing the grout.
Congratulations! You’ve successfully installed a KERDI Curbless Shower. With proper maintenance and care, your new shower will provide years of functional, accessible, and stylish service. Enjoy your updated bathroom and the peace of mind that comes with a well-engineered, waterproof shower solution.
