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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 Fundo Riolito neo bases can be cut to size on all sides making drain positions close to the wall possible.
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.
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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 mortar to achieve faster bond and adhesion.
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 load bearing, and meets deection criteria of
maximum L/360 and requirements as per IRC. Wooden or concrete struc-
tural substrates are dry and sufciently load bearing considering live and
dead load. Wood and Steel framing is sufciently load bearing, 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 Fasten-
ers) 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.
 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 plumb-
ing 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.
 Ensure that no fasteners are used and penetrate through any horizontal
building panel or shower base surfaces in shower or immediate wet
rooms. This includes tub decks, pony shower wall tops, curb tops made
from building panels, seat tops. wedi panels in such areas are installed
in a full surface applied thinset mortar setting bed.
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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.
 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.
 Seams in the assembly, which are not flat transitions or right angle
inside corner connections, are treated with these extra steps:
 Assembly parts are installed tight and offer a minimum of ½ in. wide
continuous contact/ adhesion surface between two parts, inside
which wedi joint sealant is continuously applied.
 wedi joint sealant is applied over these seams topically, and 1 in.
wide on both sides of the seam.
 wedi mesh tape is installed over these seams and covered with joint
sealant 1 in. wide on both sides of the seam.
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