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Apply continuous 1/2” (12.7 mm) beads of sealant between all connec-
tions of panels and install with tightly butted seams. Excess sealant must
be spread at with a putty knife. All seams and fastener heads in the
assembly are covered with a secondary 1/2” (12.7 mm) bead of sealant
and spread at. The seams should be covered 1” (25.4 mm) on either
side of seam. All fastener / washers are covered with sealant stretching 1”
(25.4 mm) over the washer edges.
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Set up a continuous 1/2” (12.7 mm) bead of wedi Joint Sealant along
the pans channel on the outer perimeter and only in areas where you
can immediately install a building panel into the fresh sealant.
Push the wedi Building Panel all the way into the channel of the shower
base channel and its bead of sealant. Smooth out any pushed out sealant
on the inside seam
using a putty knife. Fasten the panels directly to the
studs starting 1 ft. (304.8 mm) above the base and in corners while keeping
the board pushed down into the channel, and set the fasteners at a rate
of 1 fastener per 1 ft. (304.8 mm). One extra fastener is set into the seam
to the next panel to create a ush transition. wedi requires wedi Building
Panels to be installed in all areas exposed to water and in any case no
lower than 6” (152.4 mm) above all water inlet xtures.
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 applica-
tions and are part of the wedi System complete warranty.
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Trowel the thinset on the rear side of the Fundo again using a 1/4” ×
1/4” (6.4 × 6.4 mm) notched 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) (com-
pressed). Applying thinset on both, the wedi Base and suboor, is a
best practice recommended to achieve full surface coverage adhesion.
Another best practice is to use fast setting mortar to achieve faster
bond and adhesion. Press the wedi Fundo rmly into the thinset bed,
ensuring that the installation is level and void free. Apply some weight
equally and leave on surface and drain area to allow the thinset to
initially cure without being disturbed (e.g. thinset bags).
Set up the rubber caulking
gasket (with the beveled side
up) around the 2” (50.8 mm)
pipe in the suboor. The rubber
gasket must be ush with the
upper end of the 2” (50.8 mm)
ABS or PVC pipe.
Do not use any lubricants.
60 minutes after initial instal-
lation of the drain with wedi
Joint Sealant tighten (squeeze)
the rubber caulking gasket
rmly with the caulking nut
(use a at headed screwdriver)
and nally insert the plastic
frame and strainer on top
(without adhesive). The frame
and strainer will be held in a
grout joint only once tiling
commences. Do not tighten
the gasket prior to 60 minutes
after the threaded drain part
was sealed into the shower
base.
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