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Cut the 2” (50.8 mm) pipe 1 1/4” (31.8 mm) below the top of the Sub-
oor. Use the oval shape cutting template where you want to position
the drain to cut out suboor using a jigsaw to allow wedi drain trap to be
inserted and connected to oor pipe using appropriate ABS compatible or
multipurpose cement glue. Please also check cement glue compatibility to
oor pipe material. The drain and trap have to be secured to the suboor.
Drain recess cut out must not add deection to suboor.
Assemble the drain unit following the instruction drawing. wedi‘s Riolito neo
bases can be cut to size on all sides making drain positions close to the wall
possible. Please do not cut into the linear drains plastic ange integrated into
the coated foam part of the base. Once cut the 1/2” × 1/2” (12.7 × 12.7 mm)
channels at the new base perimeter must be reestablished. When cutting
close to the drain channel always leave enough wedi foam for re-making the
needed 1/2“ × 1/2“ (12.7 × 12.7 mm) channel. Never bend or pressure the
modular drain unit when handling or installing the gasket. Always work on it
with the unit laying on a at and supporting surface.
wedi Fundo Riolito neo Modular Installation
Before Installation:
 Have extra 2 × 4 blocking installed over bottom plate between studs
along to support wedi Building Panel to shower base transition area.
 Suboor is stable, even and loadbearing, and meets deection criteria of
maximum L/360 and requirements as per IRC. Wooden or concrete structu-
ral substrates are dry and sufciently loadbearing considering live and dead
load. Wood and Steel framing is sufciently loadbearing, plum and square.
 Floor drain assembly below oor is stabilized, xed and supported in
position, and will not sink under water load.
 Only wedi products (Building Panels, Curb, Joint Sealant and Faste-
ners) are used for wedi Fundo Shower System assembly.

Installer has received instructions from wedi Technical Sales Staff or is
informed about proper installation methods as described.
 wedi Shower Bases can be cut to size using a skilsaw. The Z notch channel
must be remade and cleaned from sawdust or other possible contamination.
 Follow applicable state or local plumbing codes requiring specic and
dimensioned waterproofed areas for a shower system or other wet
room installation. Requirements in this manual supersede local plum-
bing codes; they extend and are not in conict. wedi Shower Systems
or other wet room installations in which non-wedi product is also used
require specic project recommendations by wedi and may reduce the
extent and installation area of protection offered by wedi’s warranty.
01 02 0403
For the installation to properly work it is critical to waterproof all penetrations of the wedi product such as shower valves and shower heads using the
appropriate sealing gaskets for the application. The wedi Mixing Valve Flexi Collar and wedi Flexi Collar (for 1/2” – 3/4” [12.7 – 19 mm] shower pipe
protrusions) are used for these applications and are part of the wedi System complete warranty.
Glue and seal the wedi drain trap to the 2” (50.8 mm) pipe using appropriate
solvent cement glue for the plastics involved. Do not screw drain body/trap
to oor. Secure with some dabs of wedi Joint Sealant under ange instead.
Mount the oval sealing collar/ gasket to the base‘s receiving ABS plastic channel
on it‘s underside with no gaps showing in between both parts. Use only the
wedi screws provided and manually tighten with a Phillips screwdriver. Instead
of gluing the drain trap to the oor pipe rst, you may also connect it to the
wedi Base‘s sealing gasket rst to ensure a visibly tight connection. The trap
will then glued to the oor pipe later when the base is installed to the oor.
Apply a skim coat and nally a combed through bed of a thinset using
modied thinset ANSI 118.4 and 1/4” × 1/4” (6.4 × 6.4 mm) notch trowel.
There are different ways to ensure good bond of the wedi Base to the sub
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oor. Required is a setting bed thickness of min. 3/16“ (4.8 mm) and max.
of 5/16“ (7.9 mm) (compressed). Applying thinset on both, wedi Base and
suboor, is a best practice recommended to achieve full surface coverage
adhesion. wedi recommends to cut and dry t both oor modules to shower
stall size and drain location. Another best practice is to use fast setting mor
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tar to achieve faster bond and adhesion.