Installation Guide

Remove the clamping ring from the installed
drain and save the bolts. Align the bolt
pattern of the clamping ring with the adaptor
ring and punch the matching inserts through
the adaptor ring.
1
Apply a continuous 1/4" - 3/8" (6 mm - 10
mm) bead of KERDI-FIX to the installed
drain flange. Place the adaptor ring on
the installed drain, re-insert the bolts, and
tighten evenly. Make bolts finger-tight plus
1/4 turn; over tightening may warp the
ring and result in leaks. Ensure complete
contact between KERDI-FIX on the clamping
ring drain and the adaptor ring to prevent
leakage.
2
Slide the adaptor flange into the adaptor ring
and ensure full support under the adaptor
flange with mortar. The mortar bed is then
placed according to the instructions on
page 25.
Note: For the KERDI-DRAIN 7-1/2" Adapter
Kit, the extended adapter bonding flange
may be cut to length.
3
Clamping Ring Drain Installed: If a clamping ring drain is installed, replace with KERDI-DRAIN or convert using the KERDI-DRAIN adaptor kit.
Note: Schluter
®
-Systems strongly recommends a leak test be performed on the
connection between the drain and the waste line prior to continuing with the
remainder of the installation whenever possible. Refer to local plumbing and/or
building codes for any specific requirements in your area.
26 INSTALLATION - Shower Base with Schluter
®
-KERDI-DRAIN
As soon as the mortar bed can be walked upon, waterproofing
with the KERDI or KERDI-DS membrane can begin.
Waterproofing
No Plumbing Access: When there is no access to the plumbing from below, KERDI-DRAIN is installed to the appropriate height and connected to the waste line
prior to the installation of the shower base.
Measure and cut a section of pipe to connect KERDI-DRAIN to the odor trap using the foam spacers
included with the drain as a spacer. When installing KERDI-DRAIN over wood substrates, the minimum
thickness of mortar required at the perimeter of the bonding flange is 1" (25 mm). Prepare the odor trap, cut
section of pipe, and KERDI-DRAIN with cleaner, primer and ABS or PVC cement per the solvent cement
manufacturer’s instructions and connect.
1
Pack loose mortar under the drain up to the inlet
hole to ensure solid and uniform support of the
bonding flange and level. The mortar bed is then
placed according to the instructions above.
2