Use and Care Manual

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Ceramic and stone tiles are durable, easy to maintain, and hygienic, representing the ideal surface coverings,

particularly in wet areas such as showers and bathtub surrounds. These coverings are not inherently waterproof,

however, and must be installed in conjunction with a waterproofing system that effectively manages moisture to

protect moisture-sensitive building materials and control mold growth.

Schluter

-Shower System

The Schluter

-Shower System is an integrated family of products that creates

a “sealed” system. First, the Schluter

-KERDI-DRAIN is installed in conjunction

with either a sloped mortar bed or the Schluter

-KERDI-SHOWER-T/-TS/-TT

prefabricated foam trays. The KERDI-DRAIN provides a simple and secure

connection to the Schluter

-KERDI waterproofing membrane at the top of the

assembly via the unique integrated bonding flange. Unlike shower pan liners in

traditional assemblies, KERDI is a bonded waterproofing membrane that allows

for the direct application of tile with thin-set mortar. KERDI is bonded to the

mortar bed or tray and the surface of the KERDI-DRAIN’s integrated bonding

flange. In addition, KERDI is installed over the solid backing (e.g., gypsum

board, cement backerboard, etc.) on walls, creating a fully waterproof and vapor-

tight enclosure.

The resulting assembly provides superior moisture management as it does not

permit moisture to penetrate into the mortar bed or solid backing, allowing the

assembly to dry completely between uses. The integrated Schluter

-Shower

System eliminates leaks, reduces the potential for efflorescence and mold growth

in the system, and dramatically reduces total installation time to ensure success

and make shower installation easier than ever.

The Traditional Tiled Shower System

The traditional method for installing tiled showers is time and labor intensive and

creates a “water in/water out” system. First, a mortar bed is sloped to the weep

holes in the drain. The waterproofing membrane, called a pan liner, is placed over

this “pre-slope” and clamped into the drain. Pan liners do not allow for the direct

application of ceramic or stone tile. Thus, another mortar bed must be installed

to provide load distribution and a bonding surface for the floor tile. Finally, a

moisture barrier typically must be included behind the solid backing on the walls

(e.g., mortar, cement backerboard, etc.) and lapped over the pan liner to protect

the wall cavities from moisture penetration and divert that moisture into the pan.

Contrary to popular belief, the tile covering itself is not waterproof. Moisture

will infiltrate the mortar bed and solid backing on the walls. This moisture must

percolate through the mortar bed to the sloped pan liner and exit through the

weep holes in the drain. With regular use of the shower the mortar bed can

remain saturated, particularly if pre-slope installation is ignored or the weep holes

become clogged, thus increasing the potential for efflorescence and mold growth

within the system.

Schluter

-KERDI-DRAIN

Sloped mortar bed or

Schluter

-KERDI-SHOWER-T/-

TS/-TT prefabricated foam tray

Schluter

-KERDI waterproofing

membrane

Pre-slope

Weep holes

Pan liner

Mortar bed

Bonded Waterproofing System for Tiled Showers,

Steam Showers, Steam Rooms, and Bathtub Surrounds

Schluter

-Shower System

Schluter

-Systems’ written installation instructions shall have precedence over referenced industry

standard guidelines and installation procedures insofar as referenced information may contain overlapping

or conflicting requirements. Type, thickness, and format of the tile or stone surface covering must be suitable

for the intended application.