Installation Guide

INSTALLATION — Shower base with Schluter
®
-KERDI-DRAIN 25
Grate:
Place the height adjustment collar inside the
lateral adjustment ring and snap the grate into
place. Note: For the 6" (150 mm) grates, the
height adjustment collar is integrated with the
grate. For the residential adaptor kit, there is no
lateral adjustment ring.
1
Fill the step in the bonding flange with thin-set
mortar and back-butter the underside of the
grate to ensure full support. Place the assembly
into the mortar and install the surrounding tiles,
ensuring full coverage.
2
Position the grate to match the joint pattern of
the tile covering and press flush with the tile
surface. Remove all excess setting material
immediately. Note: Protect the visible surface of
the grate from contact with setting and grouting
materials. In particular, anodized aluminum is
sensitive to alkaline materials.
3
Tileable Covering Support:
Fill the step in the bonding flange with
thin-set mortar. Place the tile spacer in the lateral
adjustment ring and press the assembly into the
mortar. Install tiles up to the tile spacer, ensuring
full coverage. Embed the tiles on the integrated
tabs on the lateral adjustment ring, which provide
for a flush transition to the covering support.
Position the tile spacer to match the joint pattern
of the tile covering. The tiles may be held back
from the spacer as required to match the layout.
Remove all excess setting material.
1
Apply tile to the top of the covering
support using Schluter SET
TM
, ALL-SET
TM
,
FAST-SET
TM
, or unmodified thin-set mortar.
The tile may overhang the covering support
provided that a drainage opening of at least 3/16"
(5 mm) is provided.
2
After the tile is set and grouted, remove the tile
spacer and insert the tiled covering support into
the lateral adjustment ring.
3
Grate assembly
Waterproofing the shower base
The KERDI or KERDI-DS waterproofing membranes can be installed over the KERDI-SHOWER-ST tray immediately or over a mortar bed as soon as the mortar
bed can be walked upon using Schluter SET
TM
, ALL-SET
TM
, FAST-SET
TM
, or unmodified thin-set mortar. A pre-cut section of KERDI matching the dimensions of
the tray is included with the KERDI-SHOWER-ST for convenience. The thin-set mortar must be mixed to a fairly fluid consistency, but still able to hold a notch.
Apply Schluter SET
TM
, ALL-SET
TM
, FAST-SET
TM
,
or unmodified thin-set mortar to the bonding
flange and surrounding shower base with a
1/4" x 3/16" (6 mm x 5 mm) V-notched trowel
or the KERDI-TROWEL. Note: When using
the stainless steel drain, the membrane is
adhered to the bonding flange with KERDI-
FIX; clean the bonding flange prior to KERDI-
FIX application.
1
Embed KERDI or KERDI-DS in the bond
coat and work the membrane onto the
KERDI-DRAIN bonding flange and shower base
to ensure full coverage and remove air pockets.
The membrane is carried to the step in the
bonding flange (template provided) and to the
edges of the shower base.
2
When using KERDI-SHOWER-SC/-SR, repeat
the process to install the membrane over
the curb or ramp. Seams in the membrane
are constructed by overlapping the edges
by 2" (50 mm) or by abutting adjacent sheets
and installing KERDI-BAND centered over the
joint. Install KERDI-KERECK at all inside and
outside corners. When using KERDI-BOARD-
SC, seal the curb to the base and walls using
KERDI-KERECK and KERDI-BAND.
3