Tile Shower - Installation Instructions using a Mortar Bed

Schluter Materials Required for this Installation:

KERDI-DRAIN, KERDI waterproofing membrane, KERDI-BAND waterproofing strip, KERDI-KERECK prefabricated corners (included with KERDI-DRAIN).

Note: The type of bonding mortar used to apply KERDI must be suitable for the substrate. Generally, an unmodified thin-set mortar is used. Unmodified thin-set mortar must be used to construct all KERDI seams and to apply tile over the KERDI membrane.

Place a mortar screed around the base of the shower.
Place a ring of loose mortar around the inlet hole in the floor and firmly press the drain into the mortar (the drain casing and bonding flange must be fully supported).
Fill the remainder of the shower base with mortar. Slope the mortar bed using the bonding flange and the perimeter screed as a screeding guide.
Construct floor/wall connections using the KERDI-BAND strip or cut sections of KERDI membrane. Seams are constructed by overlapping the edges of KERDI or KERDI-BAND by 2" using an unmodified thin-set mortar.
Once the mortar bed can be walked upon, waterproofing with the KERDI membrane can begin. Spread unmodified thin-set mortar over the shower base and embed KERDI membrane into the mortar.
Work the matting onto the entire surface to ensure proper adhesion and to remove air pockets. Be sure the connection between the KERDI waterproofing membrane and KERDI-DRAIN is secure and watertight.
Seal the shower curb/wall junction using KERDI-KERECK inside and outside corners, and unmodified thin-set mortar.
Protect walls from moisture and vapor penetration using KERDI. Seams are constructed by overlapping the edges of KERDI or KERDI-BAND by 2" (50 mm) using unmodified thin-set mortar. Apply the thin-set mortar using a 1/4" x 3/16" V-notched trowel.
The entire shower assembly is now waterproof and ready for tile setting. The final result: a fully waterproof shower installation that is both beautiful and maintenance-free.