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The Schluter KERDI-SHOWER tray is a prefabricated sloped shower base made of expanded polystyrene, designed to replace a site-built mortar bed. It is built to integrate with the KERDI waterproofing membrane, KERDI-DRAIN and KERDI-BOARD-SC curbs, so the whole shower assembly works as one waterproofing system. Thin perimeter heights make it a natural fit for curbless, tile-ready showers. It suits renovators and tilers who want a fast, predictable slope without mud work; the trade-off is that it is not a standalone pan, since the drain and waterproofing components are separate purchases.
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Rated 4.9 out of 5 across 16 ratings, buyers are consistently positive. The recurring theme is that the tray saves time and gives a reliable slope compared with a mortar bed.
Schluter KERDI-SHOWER-T, -TS and -TT are prefabricated, sloped shower trays. They replace a mortar bed shower system. The trays are fully integrated with KERDI waterproofing and are ready for tile.
Each tray is made of lightweight expanded polystyrene. Thin perimeter heights are available to simplify building a curbless shower. The trays are designed to integrate with KERDI-BOARD-SC shower curbs, KERDI and KERDI-DRAIN. They prevent mold and mildew growth.
Twelve sizes are available, including a neo-angle configuration and an off-center drain for tub replacements. A tray needs a clean, flat, structurally sound subfloor or substrate. Plywood or cement backer board is commonly used. Shower drains are sold separately.





