Shower Installation Guide

ManualsBrandsSchluter ManualsFloor Installation KitsKerdi-Drain 11-13/16 in. PVC Flange Kit With 2 in. Outlet

INSTALLATION — Shower Assembly with Mortar Base 15

Use KERDI-KERECK-F pre-formed inside and

outside corners to seal the shower curb to the

wall and mortar base. The curb/base junction

is sealed using KERDI-BAND. Cover the curb

with KERDI.

Protect walls and ceiling* from moisture and

vapor penetration using KERDI. Seams are

constructed by overlapping the edges of KERDI

by 2" (50 mm) minimum or by butting adjacent

sheets of KERDI and installing KERDI-BAND,

centered over the joint.

*Applies when installing KERDI on the ceiling. KERDI

application on ceiling is required for steam showers and

optional for showers and tub surrounds.

Install KERDI-SEAL-PS pipe seals at shower-

head, body sprays, etc. and KERDI-SEAL-MV

mixing valve seal at the mixing valve. As an

alternative, KERDI-FIX or equivalent sealant can

be used to seal pipe protrusions and protect

moisture-sensitive solid backing panels at the

mixing valve.

The KERDI waterproofing application is now

complete. Prior to setting tile, wait 24 hours

minimum before water testing to allow for final

set of thin-set mortar and ensure waterproof

performance at seams and connections.

Before and during tile installation, the KERDI on

the mortar base must be protected in a suitable

manner (e.g., cardboard can be laid over the

floor to protect against mechanical damage).

Using a trowel that is appropriate for the size

of the tile, apply unmodified thin-set mortar

directly to the exposed KERDI surface and

install the tiles, ensuring full coverage.

The grate assembly is installed in conjunction

with the tile. Place the height adjustment collar

inside the lateral adjustment ring and snap the

grate into place. Fill the step in the bonding

flange with thin-set mortar and back-butter the

underside of the grate to ensure full support.

Press the assembly into the mortar and install

the surrounding tiles. Position the grate to

match the joint pattern of the tile covering and

press flush with the tile surface.

Note: Protect the visible surface of the

grate from contact with setting and grouting

materials. In particular, anodized aluminum is

sensitive to alkaline materials.

KERDI, KERDI-BAND, KERDI-KERECK-F, KERDI-SEAL-PS, and KERDI-SEAL-MV are installed using unmodified thin-set mortar (mixed to a fairly fluid consistency, but still able to

hold a notch). Dampen particularly dry and porous substrates in order to help prevent premature drying or skinning of the thin-set mortar. Apply the thin-set mortar using a 1/4" x

3/16" (6 mm x 5 mm) V-notched trowel or the Schluter

-KERDI-TROWEL, which features a 1/8" x 1/8" (3 mm x 3 mm) square-notched design. Embed the membrane into the mortar

throughout its entire surface to ensure proper adhesion and to remove air pockets. Periodically lift up a corner to check the fleece for full coverage. The sequence of membrane

installation can vary provided that a minimum 2" (50 mm) overlap is maintained at all joints and proper connection to the KERDI-DRAIN is established. Note: Top-over-bottom or

shingle laps of the membrane are not required.

KERDI-SEAL-PS/-MV KERDI-FIX