
The Schluter-Kerdi shower kit is a popular choice for creating a fully waterproof and vapor-tight enclosure in tiled showers. The kit includes a shower tray, curb, waterproofing membrane, and strips, with the option to add a KERDI-DRAIN grate and flange. The Schluter-Kerdi system is designed to be used with a shower pan liner, which requires a 3-piece drain that can be raised or lowered for installation. While some people choose to install the shower pan first, others opt for installing the Kerdi board on the walls first to prevent water seepage and potential damage to the pan. The KERDI-SHOWER prefabricated substrates are made of expanded polystyrene (EPS) foam, and the KERDI-BOARD is a multifunctional tile substrate and building panel that can be used for creating bonded waterproofing assemblies.
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Schluter-Kerdi shower tray and shower pan liner compatibility
The Schluter-KERDI-SHOWER prefabricated substrates are made of expanded polystyrene (EPS) foam with a high compressive strength. The Schluter-KERDI-SHOWER-LT/-LTS are prefabricated sloped shower trays with integrated KERDI waterproofing. The KERDI-SHOWER-LT/-LTS are available with centre (-LT) and perimeter (-LTS) drain placements in ten configurations with reduced perimeter heights to aid in the installation of curbless showers. The KERDI-SHOWER-T/-TS/-TT trays can be cut to size to fit various applications.
The Schluter-Kerdi shower tray is a complete system, and it is generally not recommended to mix other systems into it. However, there are some instances where people have used a shower pan liner with the Schluter-Kerdi shower tray. To use a shower pan liner, you must have a 3-piece drain, which allows you to put the liner to the drain. The drain can be raised or lowered to ensure it is flush with the tile.
The Schluter-Kerdi shower tray is designed to be used with the KERDI-DRAIN, which must be ordered separately. The KERDI-SHOWER-LT/-LTS are specifically designed to be used with the KERDI-LINE linear drain, which is also sold separately.
The Schluter-KERDI-BOARD is a multifunctional tile substrate and building panel that can be used for creating bonded waterproofing assemblies with tile coverings. It is made of extruded polystyrene foam with a special reinforcement material on both sides and fleece webbing for anchoring in thin-set mortar. It is important to note that KERDI-BOARD is not suitable for exterior applications, and certain glass tiles or moisture-sensitive stones may not be compatible with bonded waterproofing applications.
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$183.26 $226.52

Schluter-Kerdi shower tray installation order
Schluter-Kerdi is a shower system that forms a fully bonded, watertight assembly for tiled showers. The KERDI-SHOWER prefabricated substrates are made of expanded polystyrene (EPS) foam with a high compressive strength. The Schluter-Kerdi shower tray installation order is as follows:
First, ensure that the substrate is clean, level, and load-bearing. Any levelling must be done before installing the shower tray. The KERDI-SHOWER-T/-TS/-TT trays can be cut to size to fit various applications. Ideally, the tray is cut equally on all sides to ensure a consistent perimeter height.
Second, the KERDI-BAND must be used to waterproof all wall-to-tray connections, overlapping panel joints by at least 2" (50 mm). Where surfaces will not accept a bond to Schluter-SET, Schluter-ALL-SET, Schluter-FAST-SET, or unmodified thin-set mortar, use KERDI-FIX to bond KERDI-BAND.
Third, the KERDI-BOARD-SC shower curb and KERDI-BOARD-SB shower bench are typically installed adjacent to the Schluter prefabricated shower tray. The KERDI-BOARD-SC shower curb can be adhered to the permanent wall to provide lateral stability.
Finally, the Schluter-Kerdi shower tray can be installed. The shower tray must be cut to size prior to application if necessary. The base can also be extended beyond the tray using dry-pack mortar. The KERDI-DRAIN grate and flange must be ordered separately and installed according to the Schluter-Shower System Installation Handbook.
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Schluter-Kerdi shower tray waterproofing
Schluter-Kerdi is a well-known and trusted brand for waterproofing showers. The Schluter-KERDI-BOARD is a popular product for waterproofing shower trays and walls. It is a lightweight, extruded polystyrene foam panel with a reinforcement material on both sides and fleece webbing, which allows for effective anchoring in thin-set mortar.
The Schluter-Kerdi shower tray is a prefabricated, sloped shower tray with integrated KERDI waterproofing. It is made of lightweight, expanded polystyrene (PS40) and is designed to be used without a mortar bed. The tray is available in a range of sizes, including a neo-angle configuration and off-centre drain placement, which is ideal for bathtub replacements. The Schluter-Kerdi shower tray can be installed without a pre-slope, which is useful if your shower drain is flush to the subfloor level.
To ensure a fully waterproof and vapor-tight enclosure, the Schluter-Kerdi shower tray must be used with the KERDI-DRAIN. The KERDI-SHOWER-KIT includes all the necessary waterproofing components, such as the shower tray, curb, waterproofing membrane, and strips. It is important to note that the KERDI-DRAIN grate and flange must be ordered separately.
When installing the Schluter-Kerdi shower tray, it is important to follow the manufacturer's guidelines. The substrate must be clean, even, and load-bearing. Any levelling should be done before installation, and the tray may need to be cut to size. The KERDI-BAND must be used to waterproof all wall-to-tray connections, and all KERDI drains must be sealed.
The Schluter-Kerdi shower tray provides a maintenance-free, watertight shower assembly. The KERDI-DRAIN features a laminated waterproofing membrane, which offers premium protection against leaks, mould, and mildew. The Schluter-Kerdi system is an expensive option, but it provides a complete and effective waterproofing solution for tiled showers.
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Schluter-Kerdi shower tray and drain compatibility
The Schluter-KERDI-SHOWER prefabricated substrates are made of expanded polystyrene (EPS) foam with a high compressive strength. The Schluter-KERDI-SHOWER-KIT is a shower kit that contains all the elements of a complete Schluter-KERDI-SHOWER installation, except for the KERDI-DRAIN. The kit includes a shower tray, shower curb, waterproofing membrane, and waterproofing strips. The KERDI-DRAIN grate and flange must be ordered separately.
The Schluter-KERDI-SHOWER-T/-TS/-TT are prefabricated sloped shower trays with integrated KERDI waterproofing that eliminate the need for a mortar bed. The trays are made of lightweight, expanded polystyrene (PS40) for constructing mortar-free shower bases. Each of these sloped, prefabricated shower trays is designed to integrate with the Schluter-KERDI-DRAIN. The KERDI-SHOWER-T is the standard tray and is available with center drain placement in various sizes. The KERDI-SHOWER-TS has an off-center drain placement and is available in 38" x 60" (97 x 152 cm) for bathtub replacements.
The KERDI-SHOWER-TT features a thin perimeter height that simplifies curbless shower construction and is available in various sizes. The neo-angle tray features an off-center drain placement: 12” (30.5 cm) from the 38” sides of the tray. The KERDI-SHOWER-LT/-LTS are also prefabricated sloped shower trays with integrated KERDI waterproofing. They are designed for use with the KERDI-LINE linear drain (sold separately) and are available with center and perimeter drain placements.
The KERDI-BOARD-SC shower curbs and KERDI-BOARD-SB shower benches are typically installed adjacent to the Schluter prefabricated shower tray. KERDI-BOARD is a multifunctional tile substrate and building panel that can be used to build tile-ready elements in showers, bathtub surrounds, and platforms. It consists of an extruded polystyrene foam panel with a special reinforcement material on both sides and fleece webbing for effective anchoring in thin-set mortar.
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Schluter-Kerdi shower tray and KERDI-BOARD compatibility
The Schluter-Kerdi shower tray is a prefabricated sloped shower tray with integrated waterproofing that eliminates the need for a mortar bed. The Schluter-Kerdi shower tray is made of lightweight, expanded polystyrene (PS40) and is designed to be used with the Schluter-Kerdi-Drain.
The Schluter-Kerdi-Board is a multifunctional tile substrate and building panel made of extruded polystyrene foam. It is used to create bonded waterproofing assemblies with tile coverings. The Schluter-Kerdi-Board can be used in a variety of interior applications, including showers, bathtub surrounds, and platforms.
The Schluter-Kerdi shower tray and the Schluter-Kerdi-Board are both made of expanded polystyrene foam and are designed to be used together. The Schluter-Kerdi-Board can be used to create a bonded waterproofing assembly with the Schluter-Kerdi shower tray, eliminating the need for a mortar bed.
The Schluter-Kerdi-Board is typically installed adjacent to the Schluter-Kerdi shower tray. It can be cut to size and shaped to fit the shower tray, and it provides lateral stability to the assembly. The Schluter-Kerdi-Board also serves as a height compensation board, ensuring proper alignment and a flush installation with the Schluter-Kerdi shower tray.
When installing the Schluter-Kerdi-Board with the Schluter-Kerdi shower tray, it is important to follow the installation guidelines provided by Schluter. The Schluter-Shower System Installation Handbook provides detailed instructions on how to properly install the Schluter-Kerdi-Board and shower tray together, including information on waterproofing and sealing connections.
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Frequently asked questions
Yes, you can put KERDI-BOARD on top of a shower pan. However, it is recommended to install the shower pan first and then the KERDI-BOARD on the walls.
KERDI-BOARD is a multifunctional tile substrate and building panel made of extruded polystyrene foam. It can be used to build tile-ready elements in showers, bathtub surrounds, and other applications.
Yes, you can use a shower pan liner with the Schluter-Kerdi shower tray. However, you must have a 3-piece drain to do so.
Yes, the Schluter-Kerdi shower tray can be cut to size to fit various applications.
The Schluter-Kerdi shower system creates a fully waterproof and vapor-tight enclosure in tiled showers and eliminates the need for a mortar bed.






































