Installation Guide

ManualsBrandsSchluter Systems ManualsShower Base PartsKerdi-Drain Blacke PVC Shower Drain

KERDI-BOARD can be mounted vertically

or horizontally on framing with appropriate

screws (e.g., coarse thread wood screw

for wood studs and self-tapping for metal

studs) and corresponding KERDI-BOARD-ZT

washers. 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 and at

least 3/8" (10 mm) in metal studs.

Abut panels over the center of the studs

or other solid backing. 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.

Place painter’s tape to protect the tub deck.

Apply Schluter SET

, ALL-SET

, FAST-

SET

, or unmodified thin-set mortar to

the KERDI-BOARD using a 1/4" x 3/16"

(6 mm x 5 mm) V-notched trowel or

the KERDI-TROWEL. Completely fill the

1/4" (6 mm)-wide gap between the

KERDI-BOARD and tub with KERDI-FIX or

other suitable sealant.

Note: When KERDI-BOARD is installed

above the tub flange, apply KERDI-FIX to

the tub flange and spread using a small

notched trowel.

Schluter

-KERDI-BOARD over wood or metal framing

Apply KERDI-BAND waterproofing strips.

Solidly embed the membrane in the mortar

and KERDI-FIX to ensure full coverage and

remove air pockets.

KERDI-BOARD joints, corners, and fastener

penetrations are sealed with KERDI-BAND,

ensuring a minimum 2" (50 mm) overlap.

Any penetrations through the panel

(e.g., mixing valve, shower head, etc.)

must be sealed with KERDI-SEAL-PS/-MV,

KERDI-FIX, or other suitable sealant.

Seal connections to knee walls using KERDI-

KERECK-F preformed corners and Schluter

SET

, ALL-SET

, FAST-SET

, or unmodified

thin-set mortar.

Grab bars or other heavy objects must be anchored in the structure or solid blocking behind KERDI-BOARD. Installation instructions for other applications

of KERDI-BOARD (e.g. fully embedded or spot-bonded over solid backing) can be found in the 12.1 Schluter

-KERDI-BOARD technical data sheet.

Note: See page 23 for KERDI-BOARD-SN

shower niche installation instructions.

KERDI-SEAL-PS/-MV

Once all seams, corners, and knee walls

have been completely sealed, the assembly

is waterproofed and ready to be tiled.

INSTALLATION — Bathtub surround — Schluter

-KERDI-BOARD 37