Installation Guide

ManualsBrandsSchluter Systems ManualsBathroomKerdi-drain Grey PVC Shower Drain

Waterproofing connections

The KERDI-SHOWER-LT/-LTS trays are provided with integral waterproofing. When using a mortar bed, the shower base must be made waterproof using

the KERDI or KERDI-DS waterproofing membrane. The membranes can be installed as soon as the mortar bed can be walked upon.

Apply Schluter SET

, ALL-SET

, FAST-

SET

, or unmodified thin-set mortar

to the shower base with a 1/4" x 3/16"

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

KERDI-TROWEL. The thin-set mortar must

be mixed to a fairly fluid consistency, but still

able to hold a notch.

Embed KERDI or KERDI-DS in the bond

coat and work the membrane onto the entire

surface to ensure full coverage and remove

air pockets. The membrane is carried to the

stainless steel bonding flange and to the

edges of the shower base.

When using KERDI-SHOWER-SR, repeat

the process to install the membrane over

the 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.

The KERDI collar on KERDI-LINE is integrated

with the adjoining waterproofing assembly

using Schluter SET

, ALL-SET

, FAST-SET

or unmodified thin-set mortar. The KERDI

collar must be cut and folded where the

KERDI-LINE is installed adjacent to walls.

Seams in the membrane are constructed by

overlapping the edges by 2" (50 mm) with

Schluter SET

, ALL-SET

, FAST-SET

, or

unmodified thin-set mortar or by abutting

adjacent sheets and installing KERDI-BAND

with unmodified thin-set mortar, centered

over the joint.

If necessary, cut the KERDI-BOARD-SC to length using a utility knife and KERDI-SHOWER-SR using a handsaw.

Apply Schluter SET

, ALL-SET

, 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.

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. Note: When setting tile on the

curb, the surface must be sloped towards

the shower drain.

Schluter

-KERDI-BOARD-SC curb and Schluter

-KERDI-SHOWER-SR ramp

Note: KERDI-BOARD can be used to build

custom curbs.

32 INSTALLATION — Waterproofing the shower base