Use and Care Manual

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SHOWER SYSTEM

97 cm) KERDI-BOARD waterproofing panels,

KERDI-BAND, pipe and mixing valve seals,

screws and washers, plus 290 ml of KERDI-FIX

sealant in bright white. The KERDI-BOARD-KIT

provides enough KERDI-BOARD to cover up to

101 ft² (9.4 m²) of wall area.

Material Properties and

Areas of Application

SHOWER-T/-TS/-TT/-LT/-LTS/-R prefabricated

substrates are manufactured using lightweight

expanded polystyrene. The products require no

special disposal and can be recycled. No CFCs

or HCFCs are present in either the products or

in the manufacturing process. The polystyrene

foam trays have a density of 3.75 lb/ft

(60 kg/

) and the shower ramp, 4.0 lbs/ft

, all with a

48 psi (331 kPa) compressive strength at 10%

deformation. It is serviceable in temperatures

up to 175ºF (79ºC). The expanded polystyrene

used to manufacture KERDI-SHOWER-T/-TS/-

TT/-LT/-LTS/-R is treated with a flame retarding

agent. Expanded polystyrene should not be

exposed to hydrocarbons, esters, amines, and

aldehydes. All will deteriorate foam. Exposure to

ultraviolet rays (sunlight) for long periods of time

will result in partial degradation (dusting) at the

surface.

KERDI-BOARD-SB/-SC prefabricated substrates

are manufactured using KERDI-BOARD, made

from extruded polystyrene foam, with a cement-

free reinforcement layer laminated to both sides

with an anchoring fleece webbing. The surface

features printed gridlines consisting of 3/8" x 3/8"

(10 x 10 mm) squares for precise cutting. KERDI-

BOARD is waterproof and vapor-retardant and

can withstand all chemical stresses that typically

occur in conjunction with ceramic tile coverings.

KERDI-BOARD will not warp, rot, or decay. It is

serviceable in temperatures up to 158°F (70 °C).

Waterproofing Membrane

Since traditional shower pan liners are placed

below the mortar setting bed in conventional

assemblies, moisture is allowed to saturate

the mortar bed. This can increase the risk

of leakage, cause efflorescence, and foster

mold growth. Bonded waterproof membranes,

such as KERDI, are set on top of the mortar

bed and protect it from becoming saturated,

thus eliminating the problems associated with

traditional systems.

Application and Function

8.1 Schluter

-KERDI is a pliable, sheet-applied,

bonded waterproof membrane and vapor

retarder with limited crack-bridging capabilities.

It is made of soft polyethylene, which is covered

on both sides with a special fleece webbing to

anchor the membrane in the thin-set mortar.

Tiles can be installed directly on the KERDI

membrane using the thin-bed method. Other

trowel-applied covering materials, such as

plaster, can also be used. Schluter

-KERDI-DS

is a bonded waterproof membrane and vapor

retarder with very low water vapor permeance

for use in continuous use steam rooms and

similar applications.

Various KERDI waterproofing accessories are

available. Preformed, seamless corners include

the following. KERDI-KERECK-F are used to seal

90° inside and outside corners. KERDI-KERS-B

are used to seal 135° corners at triangular

shower benches and neo-angle shower curbs.

KERDI-KERS are used to seal floor/wall/

shower base connections in curbless shower

applications where the KERDI-LINE linear drain

is installed adjacent to the wall. KERDI-SEAL-

PS/-MV are prefabricated sections of KERDI

with overmolded rubber gaskets that are used

to seal pipe protrusions through the KERDI

waterproofing membrane (e.g., at showerheads

and tub spouts) and protect moisture-sensitive

backing panels at the mixing valve. Use KERDI-

BAND, in widths of 5" (12.5 cm), 7-1/4" (18.5

cm), or 10" (25 cm), to seal butt joints or corner

joints. KERDI-FLEX, in 5" (12.5 cm) or 10" (25

cm) widths, is used to seal expansion joints or

flexible edge joints.

Material Properties and

Areas of Application

KERDI features a modified polyethylene (PEVA)

core with non-woven polyproplyene on both

sides. KERDI-DS features a high-density

polyethylene (HDPE) core with non-woven

polyproplyene on both sides. KERDI is 8-mil

thick and has a water vapor permeance of 0.90

perms, when tested according to ASTM E96,

using Procedure E at 90% relative humidity.

KERDI-DS is 20-mil thick and features additives

to produce a water vapor permeance of 0.18

perms.

KERDI and KERDI-DS are waterproof

and resistant to most chemicals commonly

encountered in tiled environments. They are

resistant to aging and will not rot. KERDI

and KERDI-DS are highly resistant to saline

solutions, acid and alkaline solutions, many

organic solvents, alcohols, and oils. Information

regarding their resistance to specific substances

can be provided if concentration, temperature,

and duration of exposure are known. For acid-

resistant coverings, use an epoxy adhesive to set

and grout the tile.

KERDI and KERDI-DS are used on wall and

floor surfaces where protection against the

penetration of moisture or other harmful

substances is necessary. KERDI is suitable for

showers, intermittent use steam showers, tub

surrounds, and areas surrounding swimming

pools. Industrial applications include the food

industry, breweries, and dairies. KERDI-DS

is suitable for use in continuous use steam

rooms and other applications with similar vapor

management requirements.

KERDI and KERDI-DS meet the American

National Standard for Load Bearing, Bonded,

Waterproof Membranes for Thin- Set Ceramic

Tile and Dimension Stone Installations

(ANSI A118.10). The membranes are listed

by cUPC® and evaluated by ICC-ES (Report

Nos. ESR-2467 and PMG-1204). For

copies of these documents, please contact

Schluter

- Systems at 800-472-4588 (USA) or

800- 667-8746 (Canada) or by e-mail at info@

schluter.com. Links to the documents can also

be accessed at www.schluter.com.

KERDI and KERDI-DS have been evaluated

according to the "Standard Method for the

Testing and Evaluation of Volatile Organic

Chemical Emissions from Indoor Sources Using

Environmental Chambers, Version 1.1" for

California Specification 01350 and found to

comply with the VOC requirements. California

Specification 01350 is referenced by various

green building standards and rating systems.

Waterproof Building Panel

The KERDI-BOARD waterproof building panel

simplifies shower installation by combining the

tile backing and waterproofing installation into

a single step. KERDI-BOARD gives tile setters

more control over their projects by providing

them with the means to simply and easily create

ideal substrates for tile. Unsuitable substrates

can be remedied and new substrates can be

created while keeping the requirements of the

tile covering in mind.

Application and Function

12.1 Schluter

-KERDI-BOARD is a

multifunctional tile substrate and building panel,

which can also be used for creating bonded

waterproofing assemblies with tile coverings. 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.

With the available panel thicknesses

of 3/16", 3/8", 1/2", 5/8", 3/4", 1", 1-1/2",

8.1 Schluter

-KERDI

12.1 Schluter

-KERDI-BOARD