Specification

12.1 Schluter
®
-KERDI-BOARD
Property Method Value
Water vapor permeance ASTM E96
1
0.36 perms - 1/2" (12.5 mm)
Thermal resistance (R-value) ASTM C518
R 9.1 – 2" (50 mm)
R 2.2 – 1/2" (12.5 mm)
R 0.9 – 3/16" (5 mm)
Service temperature range -58
°F to 158°F (-50°C to 70°C)
Flame spread/smoke developed ASTM E84 Pass
2
Thermal barrier evaluation NFPA 286 Pass
2,3
stresses that typically occur in conjunction
with ceramic tile coverings. KERDI-BOARD
may be used in bonded waterproofing
assemblies where required. KERDI-BOARD
is completely flat and will not warp, even
with one-sided exposure to temperature
and moisture fluctuations. It will not rot or
decay. KERDI-BOARD can be used in a
multitude of different application areas. In
special cases, the suitability of the material
must be verified based on the anticipated
chemical and mechanical stresses. The
information provided below is intended as
general guidelines.
Structures on which KERDI-BOARD is
to be installed must be stable and meet
any other project-specific requirements.
Select a suitable material thickness if using
KERDI-BOARD for the construction of
freestanding partition walls, shelving, or
similar structures, and use reinforcement
profiles as necessary. Arrange supports
made of KERDI-BOARD at regular intervals
consistent with conventional building
practices. Select the material thickness
and installation method depending on the
evenness of the substrate. KERDI-BOARD
can be spot-bonded to walls to correct
substrate variations or fully embedded in
thin-set mortar where walls are sufficiently
even and plumb.
Maintenance
Storage
KERDI-BOARD should be stored flat.
In case of outdoor storage, protect the
material from direct sunlight and weather
exposure.
Shower Drains
Conventional two-stage drains are
designed to connect to shower pan liners
below the mortar bed and do not allow a
secure, watertight connection to bonded
waterproof membranes at the top of the
drain assembly. KERDI-DRAIN and KERDI-
LINE are designed specifically to ensure a
simple and secure connection to bonded
waterproof membranes, such as KERDI, at
the top of the assembly rather than below
it, thereby reducing the risk of leakage,
efflorescence, and mold growth.
Application and Function
8.2 Schluter
®
-KERDI-DRAIN is a floor
drain specifically designed to allow
connections to KERDI or other load-
bearing, bonded waterproof membranes.
The membrane is adhered to the large
integrated bonding flange to form a
waterproof connection at the top of the drain
assembly. KERDI-DRAIN consists of a drain
casing and fully adjustable grate assembly
or covering support to which tile is applied.
The grate assembly accommodates a
wide range of tile thicknesses and allows
lateral and tilt adjustment as well. The
covering support is placed flush with the
top of the bonding flange and can therefore
accommodate any thickness tile covering.
The standard KERDI-DRAIN is attached
directly to the waste line. The drain casing
is available in ABS, PVC, or stainless
steel. The plastic drain casings feature a
fleece-covered bonding flange. They are
available with standard 2" (50 mm) and 3"
(75 mm) outlets and attached to the pipe
using an appropriate solvent cement. The
stainless steel drain casings are available
with standard 2" (50 mm) or 3" (75 mm)
no-hub outlets or 2" (50 mm) threaded
outlet. The no-hub outlets are attached to
the pipe using an appropriate mechanical
(e.g., flexible or no-hub) coupling. The
threaded outlets are attached to the pipe
using thread sealing compound or tape.
The simple connection to standard drain
outlets makes KERDI-DRAIN suitable for
new construction and renovation.
The KERDI-DRAIN adaptor kit is designed
to convert clamping ring drains by equipping
them with an integrated bonding flange. The
adaptor kit includes a stainless steel adaptor
ring with an over-molded rubber gasket
and a variety of perforated hole patterns
that align with most common clamping
ring shower drains. The adaptor ring
replaces the clamping ring and is attached
to the drain body using the clamping ring
bolts. This connection is made watertight
via the rubber gasket and KERDI-FIX
adhesive/sealant. The integrated bonding
flange slides into the adaptor ring, with
the over-molded rubber gasket ensuring a
watertight seal. Commercial KERDI-DRAIN
adaptor kits feature a 7-1/2" (191 mm)
diameter adaptor ring and are available
with a stainless steel bonding flange or an
ABS bonding flange. The ABS bonding
flange is available in two sizes (standard or
extended length) to accommodate different
tile assembly thicknesses. The residential
KERDI-DRAIN adaptor kit features a 5-1/4"
(133 mm) diameter adaptor ring and an ABS
bonding flange. The KERDI-DRAIN adaptor
kit is particularly useful in renovations where
the clamping ring drains are difficult to
replace with the standard KERDI-DRAIN
(e.g., when they are set in concrete slabs).
The grate assembly consists of a height
adjustment collar, lateral adjustment ring,
and drain grate or covering support. The
grates are installed in conjunction with
a height adjustment collar and lateral
adjustment ring, which are made of ABS
or stainless steel, to allow for simple and
convenient adjustment when setting the tile.
Drain grates are available in stainless steel
with a polished or oil-rubbed bronze finish
and in anodized aluminum with a brushed
copper bronze, brushed brass, or brushed
nickel finish. The polished stainless steel
grates are available in 4" (100 mm) -square,
6" (150 mm) -square and -round versions.
All other grates are available in the
SHOWER SYSTEM
4
8.2 Schluter
®
-KERDI-DRAIN
8.7 Schluter
®
-KERDI-LINE
1
Using the desiccant method at 100°F (38°C) and 90% RH
2
Per International Building Code Requirements
3
Porcelain tile used as thermal barrier over 1/2" (12.5 mm) -thick KERDI-BOARD on wood framing