Schluter-KERDI Technical Data Sheet

WATERPROOFING MEMBRANES
2
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. Before
placing the KERDI, verify that the substrate is
clean, even, and load bearing. Surfaces that
inhibit proper adhesion must be removed or
appropriately treated.
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 [phone] (CAN)
or by e-mail at [e-mail]. 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
Installation
1. The substrate must be clean, even, and
load bearing. The thin-set mortar used
for bonding Schluter
®
-KERDI must be
appropriate for the substrate, and it
must penetrate and engage the KERDI
fleece. Generally, an unmodified thin-
set mortar is used. Cut KERDI to size
prior to application.
2. Apply thin-set mortar to the substrate
using a 1/4" x 3/16" (6 mm x 5 mm)
V-notched trowel or the Schluter
®
-
KERDI-TROWEL, which features a 1/8"
x 1/8" (3 mm x 3 mm) square-notched
design (Note the open time of the
mortar). Press KERDI fully into the bond
coat. Work the KERDI into the mortar
by applying pressure to the membrane
with the flat side of the trowel (held at an
angle) in smooth, diagonal sweeps. Air
bubbles must be avoided.
3. Seams can be constructed by
overlapping the edges of the KERDI 2"
(5 cm) using unmodified thin-set mortar,
or by abutting the edges and covering
the joint with Schluter
®
-KERDI-BAND
using an unmodified thin-set mortar.
4. For inside and outside corners,
adhere pre-formed Schluter
®
-KERDI-
KERECK-F corners. For floor/wall
connections, use KERDI-BAND.
Install Schluter
®
-KERDI-SEAL-PS pipe
seals at showerhead, body sprays,
etc. and Schluter
®
-KERDI-SEAL-MV
at the mixing valve. As an alternative
to KERDI-SEAL-PS/-MV, Schluter
®
-
KERDI-FIX or other suitable sealant can
be used to seal pipe protrusions and
protect moisture-sensitive solid backing
panels at the mixing valve.
5. Connections to fixed building elements
can be achieved by using KERDI,
KERDI-BAND, or KERDI-FLEX in
conjunction with KERDI-FIX, suitable
trowel-applied waterproofing materials
(such as urethane or similar), that
require atmospheric moisture to cure,
or other suitable sealing compounds.
6. KERDI shall be separated at existing
expansion, structural, and flexible edge
joints. Cover the joints with KERDI-
FLEX. To allow for greater movement,
the center section of the KERDI-FLEX
can be tucked into the cavity of the
expansion joint prior to bonding.
7. Once the entire membrane—with
seams, corners, and connections—has
been completely bonded, and therefore
waterproofed, the covering may be
applied.
Note: Water testing of the assembly
Prior to setting tile, wait 24 hours
to allow for final set of the mortar
before testing to ensure waterproof
performance of the assembly at seams
and connections.
8. For tile installations using the thin-bed
method, apply unmodified thin-set
mortar directly to the exposed KERDI
surface and install the tiles, ensuring full
coverage. For acid-resistant coverings,
use an epoxy adhesive to set and grout
the tile.
Connection to Schluter
®
-KERDI-DRAIN
Schluter
®
-KERDI-DRAIN is a floor drain
specifically designed to allow connections
to Schluter
®
-KERDI or other bonded
waterproof membranes, typically in shower
applications. When adhering KERDI to
KERDI-DRAIN, the membrane must
be held back to the step in the fleeced
bonding flange. Apply unmodified thin-set
mortar to the bonding flange using a 1/4"
x 3/16" (6 mm x 5 mm) V-notched trowel
or the Schluter
®
-KERDI-TROWEL, which
features a 1/8" x 1/8" (3 mm x 3 mm)
square-notched design. Firmly press KERDI
into the mortar with the flat side of the
trowel to ensure 100% coverage and a
watertight seal. When using the stainless
steel KERDI-DRAIN bonding flange, KERDI
is adhered to the flange with KERDI-FIX.
The flange must be clean and free of grease
or other contaminants prior to KERDI-FIX
application.
Relevant industry standard guidelines for
floor drains with integrated bonding flange
include method B422 in the Tile Council
of North America’s (TCNA) Handbook for
Ceramic Tile Installation and Method 326DR
in the Terrazzo, Tile and Marble Association
of Canada (TTMAC) Specification Guide
09300 Tile Installation Manual. Please
contact Schluter
®
-Systems for the Schluter
®
Shower System installation video and
KERDI-DRAIN data sheet.
Schluter
®
-KERDI-DRAIN assembly with
Schluter
®
-KERDI waterproofing membrane.