Use and Care Manual

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 (HPDE) 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
[e-mail]. 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",
and 2" (5, 9, 12.5, 15, 19, 25, 38, and
50 mm), KERDI-BOARD covers a broad
range of application areas for creating flat,
level, plumb, square, and dimensionally
stable substrates for the installation of
ceramic and natural stone tiles. With
SHOWER SYSTEM
3
12.1 Schluter
®
-KERDI-BOARD
8.1 Schluter
®
-KERDI