Using a prefabricated shower tray and ramp

When the floor can not be lowered, a prefabricated ramp and base, such as the KERDI-SHOWER-T / -TS / -TT base and the KERDI-SHOWER-SR ramp, will be added to facilitate the shower transition. and the room. KERDI-SHOWER-T / -TS / -TT bases are available in a variety of sizes and are coated with waterproofing membranes. The KERDI-SHOWER-T base has a centered drain opening, while the KERDI-SHOWER-TS base is designed for an off-center drain. The KERDI-SHOWER-TT base has a thin perimeter and a centered drain opening. Ideal for walk-in showers, the KERDI-SHOWER-SR ramp is made of expanded polystyrene and respects the slope ratio required by the ADA.

Note: While the image below shows a wood subfloor, this is also achievable with a concrete subfloor. See technical detail for how.

1. Prefabricated shower tray: Schluter®-KERDI-SHOWER-T/-TS/-TT

KERDI-SHOWER-T/-TS/-TT are prefabricated sloped shower trays with integrated KERDI waterproofing that eliminate the need for a mortar bed. Twelve sizes available, including a neo angle configuration and off-center drain for tub replacements. 

 KERDI-SHOWER-TT features a thin perimeter height (29/32" [23 mm] - 1-1/32" [26 mm]) that simplifies curbless shower construction. The KERDI-SHOWER-T and KERDI-SHOWER-TS shower trays feature thicker heights (1-1/8" [29 mm] - 1-1/2" [38 mm]) that may also be suitable for your project.

Schluter®-KERDI-SHOWER-T/-TS/-TT

Schluter®-
KERDI-SHOWER-T/-TS/-TT

Prefabricated sloped shower tray

2. Point drain: Schluter®-KERDI-DRAIN

The KERDI-DRAIN features an integrated bonding flange which allows for a simple and secure connection to the KERDI waterproofing membrane. The drain grate is available in stainless steel, various finishes of anodized aluminum, and even a frameless tileable model, which can be adjusted laterally to fit the layout of the tile grid and leveled to the tile surface—accommodating a wide range of tile thicknesses.

Schluter®-KERDI-DRAIN

Schluter®-
KERDI-DRAIN

Floor drain with integrated bonding flange

3. Prefabricated shower ramp: Schluter®-KERDI-SHOWER-SR

Ideal for use in barrier-free showers, the KERDI-SHOWER-SR ramp is made of lightweight, expanded polystyrene and adheres to the slope ratio required by the ADA.

Schluter®-KERDI-SHOWER-SR

Schluter®-
KERDI-SHOWER-SR

Prefabricated shower ramp

4. Waterproofing membrane and vapor retarder: Schluter®-KERDI

In this shower application, the KERDI waterproofing membrane has been applied to the solid backing on the walls, as well as the shower base and curb. KERDI is a pliable, sheet-applied polyethylene waterproofing membrane and vapor retarder that has been specifically designed for tile applications. Since it is made of inorganic materials, KERDI will not promote mold growth within the system.

While the KERDI membrane is used in the image above, note that KERDI-BOARD multifunctional building panels are also suitable.

Schluter®-KERDI

Schluter®-
KERDI

Bonded waterproofing and vapor-retardant membrane

Schluter®-KERDI-BOARD

Schluter®-
KERDI-BOARD

Waterproof, multifunctional tile substrate and building panel

5. Uncoupling and waterproofing membrane: Schluter®-DITRA

Specifically designed for ceramic and stone tile installations, the family of DITRA products provides effective uncoupling protection, preventing cracked tiles and grout. Made of polyethylene, DITRA also serves as a waterproofing layer that protects moisture-sensitive substrates, such as plywood/OSB. Free-space on the underside of the matting provides a route for excess moisture and vapor to prevent damage to the tile layer above. DITRA performs all these functions while still providing adequate support/load distribution for the tile covering.

Different options and thicknesses of DITRA membrane are available to best suit the needs of your project.

DITRA has a nominal 1/8" (3 mm)-thickness which minimizes tile assembly thickness.

DITRA-XL is 5/16” (7 mm)-thick and allows for ceramic tile application over single layer plywood/OSB subfloors on joists spaced at 24” (610 mm)

DITRA-HEAT features a thickness of 1/4" (5.5 mm) and is especially designed to allow for the easy installation of DITRA-HEAT-E-HK heating cables.

DITRA-HEAT-DUO features an integrated bonding fleece that provides sound control, as well as a thermal break. The nominal 5/16” (8mm) thickness minimizes tile assembly thickness. The system can also be customized with floor heating cables to create a warm, luxurious tile floor.

Schluter®-DITRA & DITRA-XL

Schluter®-
DITRA & DITRA-XL

Uncoupling and waterproofing membrane

Schluter®-DITRA-HEAT

Schluter®-
DITRA-HEAT

Uncoupling membrane specifically designed for DITRA-HEAT-E-HK electric floor heating cables

Schluter®-DITRA-HEAT-DUO

Schluter®-
DITRA-HEAT-DUO

Uncoupling membrane with integrated sound control and thermal break

6. Waterproofing strip: Schluter®-KERDI-BAND

KERDI-BAND is a waterproofing strip used to seal all KERDI-BOARD butt joints, screw penetrations, and the connection between the KERDI-BOARD panels on the walls with the KERDI membrane laminated to the shower tray. KERDI-BAND is only 4 one-thousands of an inch (4 mil)-thick, half the thickness of KERDI thus limiting buildup, and ensuring a smooth surface for tile installation.
Schluter®-KERDI-BAND

Schluter®-
KERDI-BAND

Waterproofing strip for sealing abutting joints of Schluter® membranes and building panels

7. Waterproofing corners Schluter®-KERDI-KERECK

KERDI-KERECK  are preformed, seamless corners made of KERDI for waterproofing inside and outside corners. Corners tend to be challenging areas to waterproof, so these corners greatly simplify installation.

Schluter®-KERDI-KERECK-F/-KERS-B

Schluter®-
KERDI-KERECK-F/-KERS-B

Preformed, waterproofing corners

8. Corner Movement Joint Schluter®-DILEX-EKE

Schluter®-DILEX-EKE is a corner movement joint profile with rigid PVC anchoring legs and a 3/16” (5 mm)-wide, soft chlorinated polyethylene (CPE) movement zone that separates individual tile fields at floor/wall transitions and inside wall corners and forms the visible surface.
Schluter®-DILEX-EKE

Schluter®-
DILEX-EKE

Corner movement joint profile for inside wall corners and floor/wall transitions

1. Prefabricated sloped shower tray: Schluter®-KERDI-SHOWER-LTS

KERDI-SHOWER-LT/-LTS are prefabricated expanded polystyrene sloped trays with integrated KERDI waterproofing specifically designed to accept the KERDI-LINE linear drain. The trays are available in ten configurations with center drain and perimeter drain placements with reduced perimeter heights that simplifies construction of curbless showers. Shower tray heights range from 1-1/4" (32 mm) to 2-3/8" (60 mm).
Schluter®-KERDI-SHOWER-LT/-LTS

Schluter®-
KERDI-SHOWER-LT/-LTS

Prefabricated sloped shower trays for accommodating the KERDI-LINE linear drain

2. Linear floor drain: Schluter®-KERDI-LINE

Go linear! KERDI-LINE has a low profile which makes it ideal for open-concept, curbless showers, including those designed to accommodate wheelchairs. Beautiful design meets function and accessibility!

Schluter®-KERDI-LINE

Schluter®-
KERDI-LINE

Low-profile linear floor drain

3. Prefabricated shower ramp: Schluter®-KERDI-SHOWER-SR

Designed to integrate with the Schluter®-Shower System, the KERDI-SHOWER-SR is a lightweight, prefabricated shower ramp for creating accessible, curbless showers.
Schluter®-KERDI-SHOWER-SR

Schluter®-
KERDI-SHOWER-SR

Prefabricated shower ramp

4. Waterproofing membrane and vapor retarder: Schluter®-KERDI

KERDI is a pliable sheet-applied polyethylene waterproofing membrane and vapor retarder that guarantees uniform thickness. It is covered with an anchoring fleece on both sides to anchor the membrane in thin-set mortar and is suitable for waterproofing in conjunction with tiled surfaces on walls and floors. KERDI is 8-mil thick and has a vapor permeance of 0.90 perms.

While the KERDI membrane is used in the image above, note that KERDI-BOARD multifunctional building panels are also suitable.

Schluter®-KERDI

Schluter®-
KERDI

Bonded waterproofing and vapor-retardant membrane

Schluter®-KERDI-BOARD

Schluter®-
KERDI-BOARD

Waterproof, multifunctional tile substrate and building panel

5. Uncoupling and waterproofing membrane: Schluter®-DITRA

DITRA is specifically designed for ceramic and stone tile installations. DITRA provides uncoupling to prevent cracked tile and grout. Made of polyethylene, DITRA serves as a waterproofing layer that protects moisture-sensitive substrates, such as plywood/OSB. Free-space on the underside of the matting provides a route for excess moisture and vapor to prevent damage to the tile layer above. DITRA performs all these functions while still providing adequate support/load distribution for the tile covering.

Different options and thicknesses of DITRA membrane are available to best suit the needs of your project.

DITRA has a nominal 1/8" (3 mm)-thickness which minimizes tile assembly thickness.

DITRA-XL is 5/16” (7 mm)-thick and allows for ceramic tile application over single layer plywood/OSB subfloors on joists spaced at 24” (610 mm) o.c.

DITRA-HEAT features a thickness of 1/4" (5.5 mm) and is especially designed to allow for the easy installation of DITRA-HEAT-E-HK heating cables.

DITRA-HEAT-DUO features an integrated bonding fleece that provides sound control, as well as a thermal break. The nominal 5/16” (8mm) thickness minimizes tile assembly thickness. The system can also be customized with floor heating cables to create a warm, luxurious tile floor.

 

Schluter®-DITRA-HEAT

Schluter®-
DITRA-HEAT

Uncoupling membrane specifically designed for DITRA-HEAT-E-HK electric floor heating cables

Schluter®-DITRA & DITRA-XL

Schluter®-
DITRA & DITRA-XL

Uncoupling and waterproofing membrane

Schluter®-DITRA-HEAT-DUO

Schluter®-
DITRA-HEAT-DUO

Uncoupling membrane with integrated sound control and thermal break

6. Waterproofing strip: Schluter®-KERDI-BAND

KERDI-BAND is a waterproofing strip used to seal all KERDI-BOARD butt joints, screw penetrations, and the connection between the KERDI-BOARD panels on the walls with the KERDI membrane laminated to the shower tray. KERDI-BAND is only 4 one-thousands of an inch (4 mil)-thick, half the thickness of KERDI thus limiting buildup, and ensuring a smooth surface for tile installation.
Schluter®-KERDI-BAND

Schluter®-
KERDI-BAND

Waterproofing strip for sealing abutting joints of Schluter® membranes and building panels

7. Waterproofing corners Schluter®-KERDI-KERECK

KERDI-KERECK-F are preformed, seamless corners made of KERDI for waterproofing inside and outside corners. Corners tend to be challenging areas to waterproof, so these corners greatly simplify installation.
Schluter®-KERDI-KERECK-F/-KERS-B

Schluter®-
KERDI-KERECK-F/-KERS-B

Preformed, waterproofing corners