Use and Care Manual

SUBSTRATE, BUILDING PANEL, BONDED WATERPROOFING
2. First, cut the panels to the required size.
If a larger expanse of panels is required,
several panels can be connected along
the edges with thin-set mortar, Schluter
®
-
KERDI-FIX adhesive, or the KERDI-
BOARD-ZDK double-sided adhesive
tape.
3. If the grooved surface points toward
the inside, it is recommended that the
grooves be filled with thin-set mortar prior
to panel installation.
4. Outward-facing grooves should be filled
with thin-set mortar prior to or during the
tile installation.
5. The tiles can be installed using Schluter
SET™, Schluter ALL-SET™, Schluter
FAST-SET™ or unmodified thin-set
mortar once the bonding materials used
to construct the element have cured
sufficiently to stabilize the assembly.
Choose a notched trowel to match the
tile format, and back-butter the tiles, if
necessary, to attain full coverage
Note: See section “Waterproofing” on
the use of KERDI-BOARD in bonded
waterproofing assemblies.
KERDI-BOARD-SB bench
1. Apply Schluter SET™, Schluter ALL-
SET™, Schluter FAST-SET™ or
unmodified thin-set mortar to the
floor and walls using a 1/4" x 3/8"
(6 mm x 10 mm) square- or U-notched
trowel.
2. Press the bench firmly into place and
check the underside and backsides to
ensure that full coverage and support
are achieved. Verify that the slope on the
surface of the bench is directed toward
the shower base.
3. Install KERDI-BAND and KERDI-
KERECK and KERDI-KERS-B (for
triangular bench) to cover all seams
and corners, ensuring a minimum 2"
(50 mm) overlap, and work the membrane
into the mortar to achieve full coverage
and remove air pockets.
KERDI-BOARD-SC curb
1. Apply Schluter SET™, Schluter ALL-
SET™, Schluter FAST-SET™ or
unmodified thin-set mortar to the
floor and to the edge of the shower
base and walls using a 1/4" x 3/8"
(6 mm x 10 mm) square- or U-notched
trowel.
2. Press the curb or ramp firmly into place.
Check the underside of the curb or ramp
to ensure that full coverage and support is
achieved.
3. Seal the curb to the base and walls using
KERDI-KERECK and KERDI-BAND.
KERDI-BOARD-SN shower niche
1. Determine desired location and trace
around the outside of the Schluter
®
-KERDI-
BOARD-SN flange, making sure the lines
are level and plumb. Cut and remove
the wallboard such that the niche will be
supported on both sides by the studs or
other wall framing.
2. Insert the niche and fasten to the studs.
When installing adjacent to KERDI-
BOARD, use wood or metal screws and
KERDI-BOARD-ZT washers, placing the
fasteners along the seam between the
KERDI-BOARD and the niche. When
installing adjacent to gypsum board
or other tile backers (e.g., CBU), use
wood or metal screws only (i.e., no
washers), placing fasteners approximately
1/4" (6 mm) from the edges of the niche.
Fasten all corners and limit fastener
spacing to 12" (305 mm) o.c.
3. Connections between the niche and walls
are made using KERDI-BAND or KERDI.
When installed adjacent to KERDI-BOARD,
seams are most easily constructed using
KERDI-BAND. When installed adjacent to
gypsum board or other tile backers (e.g.,
CBU), seams are most easily constructed
by continuous application of the KERDI
membrane. The membrane is applied
up to the niche opening. Once the niche
is sealed to the wall assembly, tile can
be installed immediately using Schluter
SET™, Schluter ALL-SET™, Schluter
FAST-SET™ or unmodified thin-set
mortar.
4. When using the prefabricated shelf,
determine the desired height of the shelf
and mark with a level line. Set tile using
Schluter SET™, Schluter ALL-SET™,
Schluter FAST-SET™ or unmodified thin-
set mortar up to that line on the back and
sides of the niche. Butter the sides and
back of the shelf with Schluter SET™,
Schluter ALL-SET™, Schluter FAST-
SET™ or unmodified thin-set mortar and
solidly embed it in the niche, resting on
the previously installed tile. The shelf may
be raised at the back to create a slope,
or the tile may be set on a slope during
installation, to prevent water from pooling
in the finished application. Continue
setting tile using Schluter SET™, Schluter
ALL-SET™, Schluter FAST-SET™ or
unmodified thin-set mortar.
KERDI-BOARD-KIT
1. KERDI-BOARD can be mounted vertically
or horizontally on framing with appropriate
screws (e.g., KERDI-BOARD-ZS coarse
thread screws for wood studs [included]
and corresponding KERDI-BOARD-ZT
washers [included].) If applying over metal
studs, use self-tapping screws.
Minimum board thickness = 1/2" (12.5
mm) for studs spaced at 16" (40.6 cm)
o.c.; 3/4" (19 mm) for studs spaced at 24"
(61.0 cm) o.c.. Screws must reach a depth
of at least 3/4" (20 mm) in wood studs. For
metal studs, screws must reach a depth of
at least 3/8" (10 mm).
2. Leave a 1/4" (6 mm)-gap between the
bottom edge of KERDI-BOARD and the
top of the tub or acrylic shower pan.
The back of the KERDI-BOARD can be
routered to cover the tub/pan flange.
3. The vertical edges of each panel should
be positioned over the center of a stud or
other solid backing. If necessary, KERDI-
BOARD panels can be cut easily with
a utility knife and straight edge. Screws
may be placed between adjacent panels
such that the washers fasten both panel
edges. The maximum allowable on-center
fastener spacing is 12" (30 cm) for walls
and 6" (15 cm) for ceilings.
4. Place painter’s tape at inside corners
of the tub deck or shower base for
protection.
Apply a minimum of 5" (125 mm) of
Schluter SET™, Schluter ALL-SET™,
Schluter FAST-SET™, or unmodified thin-
set mortar to the KERDI-BOARD using the
KERDI-TROWEL or a 1/4" x 3/16" (6 mm
x 5 mm) V-notched trowel. Use KERDI-
FIX to completely fill the 1/4" (6 mm)-wide
gap between the KERDI-BOARD and tub.
Note: When KERDI-BOARD is installed
above the tub flange, apply KERDI-FIX to
the tub flange and spread using a small-
notched trowel.
5. Apply KERDI-BAND waterproofing
strips. Solidly embed the membrane in
the mortar and KERDI-FIX to ensure full
coverage and remove air pockets.
6. KERDI-BOARD joints, corners, and
fastener penetrations are sealed with
KERDI-BAND, ensuring a minimum 2" (50
mm) overlap. Any protrusions through the
panel (e.g., mixing valve, shower head,
etc.) must be sealed with KERDI-SEAL-
PS/-MV, or KERDI-FIX.
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