Specification

applications.
KERDI-KERS are preformed, seamless
corners made of KERDI for waterproofing
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 bonded waterproof membrane
features a polyethylene core with a
polypropylene fleece laminated to both
sides. The material is physiologically safe
and does not require special disposal.
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 is waterproof and resistant to most
chemicals commonly encountered in tiled
environments. It is resistant to aging and
will not rot. KERDI is highly resistant to
saline solutions, acid and alkaline solutions,
many organic solvents, alcohols, and oils.
Information regarding its 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 is suitable for wall and floor surfaces
where protection against the penetration
of moisture or other harmful substances
is necessary. Applications include
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 meets the American National
Standard for Load Bearing, Bonded,
Waterproof Membranes for Thin-
Set Ceramic Tile and Dimension Stone
Installations (ANSI A118.10). The membrane
is listed by cUPC
® and evaluated by ICC-ES
(Report No. ESR-2467). 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 has been independently tested and
found to emit zero VOCs per California
Specification 01350: “Standard Practice for
the Testing of Volatile Organic Emissions
from Various Sources Using Small-Scale
Environmental Chambers”. Thus, KERDI
can contribute towards achieving the
following green building credits:
• LEED, IEQ Credit 4.3: Low-Emitting
Materials - Flooring Systems
• ICC 700-2008, 901.6: Pollutant Source
Control - Hard-Surface Flooring
• CHPS, EQ2.2: Low-Emitting Materials
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
suitable preparation of the abutting seams
and joint areas, the panel may be used for
bonded waterproofing assemblies.
KERDI-BOARD is suitable for: creating
tile substrates on masonry walls, wood
or metal framing, and other finished wall
surfaces; creating straight or curved
partition walls; creating straight or curved
bathtub and shower surrounds; concealing
pipes and columns; as well as creating
bathtub platforms, vanities, storage shelves,
countertops, and various other bathroom
structures.
The boards are simply cut to size with a
utility knife. The gridlines, which are printed
on the surface, are helpful for neat and
quick cuts and installation. KERDI-BOARD
can be fully adhered in wall areas or spot-
bonded with thin-set mortar. If necessary,
the material may be secured with additional
wall anchors. In the case of stud framing,
KERDI-BOARD is attached with screws
and washers from the matching hardware
system. Tiles can be installed directly over
KERDI-BOARD using the thin-set method.
L-shaped and U-shaped KERDI-BOARD
panels are available for creating pipe and
column coverings, and grooved panels
are available for creating curved elements.
Schluter
®
-Systems also offers profiles and
attachment hardware for wall connections
and finishing edges, as well as matching
wall anchors and screws.
Material Properties and
Areas of Application
KERDI-BOARD is made from extruded
polystyrene foam, with a cement-free
reinforcement layer laminated to both sides
and an anchoring fleece webbing. The
surface of the board has gridlines consisting
of 3/8" x 3/8" (10 x 10 mm) squares printed
on one side.
KERDI-BOARD is waterproof and vapor
retardant and can withstand all chemical
SHOWER SYSTEM
3
12.1 Schluter
®
-KERDI-BOARD