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01 02 04
Cut the 2” pipe flush (or max. 1/8“ above) to the floor construction. Make
sure that the cut out fits to the Fundo panel drain. Cut out a 5 inch diameter
hole around the 2 inch pipe to allow for the wedi drain to be inserted into
the subfloor while the cut out area must remain free of deflection. The
drain and trap have to be sturdily fastened to the sub floor.
Assemble the
drain unit follow ing the instruction drawing.
03
Set up a continuous 1/4” bead
of wedi sealant along the top
side of the wedi Fundos’ valve
groove profile.
Drop the drain body firmly into
the sealant.
05 06 08
Turn the Fundo base upside
down and apply the rubber
and the fiber gasket.
Tighten the gaskets firmly to
the bases‘ steel ring using the
locking nut. Make sure the
drain body is still safely received
in the valve-bead of sealant.
07
Skim coat the thinset ANSI 118.4 and comb through with a 1/4” × 1/4”
notched trowel. Channels pointing to the en trance. Trowel the thinset
on the rear side of the Fundo again using a 1/4” × 1/4” notched trowel.
There are different ways to ensure good bond of the wedi base to the
subfloor. Required is a setting bed thickness of min. 3/16“ and max. of
5/16“ (compressed). Applying thinset on both, wedi base and subfloor, is
a best practice recommended to achieve full surface coverage adhesion.
wedi Fundo Primo 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.
 Subfloor is stable, even and loadbearing, and meets deflection criteria
of maximum L/360 and requirements as per IRC. Wooden or concrete
structural substrates are dry and sufficiently loadbearing considering
live and dead load. Wood and Steel framing is sufficiently loadbear-
ing, plum and square.
 Floor drain assembly below floor is stabilized, fixed and supported in
position, and will not sink under water load.
 Only wedi products (Building Panels, Curb, Joint Sealant and Fasteners)
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.
* Installations in Australia & New Zealand: Please refer to Installation manuals featuring the applicable job site requirements and wedi drains.