Use and Care Manual

WATERPROOFING MEMBRANES
2
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 use in 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. Before placing
the membranes, verify that the substrate is
clean, even, and load bearing. Surfaces that
inhibit proper adhesion must be removed or
appropriately treated.
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.
Installation
1. The substrate must be clean, even, and
load bearing. The thin-set mortar used
for bonding KERDI must be appropriate
for the substrate, and it must penetrate
and engage the KERDI fleece. Cut
KERDI to size prior to application.
2. Apply thin-set mortar to the substrate
using a 1/4" x 3/16" (6 x 5 mm) V-notched
trowel or the KERDI-TROWEL, which
features a 1/8" x 1/8" (3 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 Schluter SET™,
Schluter ALL-SET™, Schluter FAST-
SET™, or unmodified thin-set mortar,
or by abutting the edges and covering
the joint with KERDI-BAND using an
Schluter SET™, Schluter ALL-SET™,
Schluter FAST-SET™, or unmodified
thin-set mortar.
4. For inside and outside corners, adhere
pre-formed KERDI-KERECK-F corners.
For floor/wall connections, use KERDI-
BAND. Install KERDI-SEAL-PS pipe
seals at showerhead, body sprays,
etc. and KERDI-SEAL-MV at the mixing
valve. As an alternative to KERDI-
SEAL-PS/-MV, 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
KERDI-DRAIN is a floor drain specifically
designed to allow connections to 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 x 5 mm)
V-notched trowel or the KERDI-TROWEL,
which features a 1/8" x 1/8" (3 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.
Schluter
®
-KERDI-DRAIN assembly with
Schluter
®
-KERDI waterproofing membrane.