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wedi Fundo
®
Riolito
®
Base and wedi Fundo
®
Shower Kit - Riolito
®
Installation Manual
1. Cut the 2 inch waste pipe even and flush with the subfloor surface. Make sure that the cut out fits to the Fundo panel drain.
The distance measurements of the center of the pipe, when measured from all walls, should match the distance measurements
of the Fundo base‘s drain center to the outside edges of its perimeter (including the channel). Cut out a 5 in. diameter hole
around the 2 in. pipe‘s center to allow for the wedi drain to be inserted into the subfloor while the cut out area must remain
free of deflection. The drain waste pipe and P-trap have to be safely affixed to and supported by the subfloor structure.
2. Cut the Fundo base to fit between framed walls and so its wedi drain unit can connect with the floor waste pipe. Consider also
the space needed by a curb or extension before cutting your wedi base. Consider that cutting the base may change the slope
design and tile layouts should be considered before cutting. Consider that enough material thickness remains available to later
remake the 1/2 in. x 1/2 in. perimeter channel whereby the bottom of the channel must not be thinner than 1/4 in. Do not cut
close to the integrated drain and maintain a minimum distance of 2 in. from the drain opening. It is recommended to turn the
base on its back so you can move the circular saw over a flat surface ensuring a square cut. The distance measurements of the
center of the pipe, when measured from all walls, should match the distance measurements of the Fundo base‘s drain center
to the outside edges of its perimeter (including the channel).
3. Once cut, you want to dry fit the base and then remake the 1/2 in. × 1/2 in. perimeter channel where the base connects to
wedi Building Panels, curbs, ramps or extensions. Clean the base and channels from saw dust using a vacuum cleaner.
4. Next, install the Fundo Click and Seal™ drain unit. Drain components are delivered inserted inside the Drain Body. Please take
the parts out and use step by step following our manual here.
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5. Apply the wedi provided safe Lubricant to the black rubber ring inside the wedi Drain Body.
6. Insert the Drain Body snugly into the receiving mechanism of the Drain Unit on the underside of the Fundo base.
7. Once inserted, turn the Drain Body clockwise until its plastic flap clicks in position in its final resting position. This will require no
more than a quarter turn. Ensure a tight connection by pushing and pulling on the Drain Body and verifying a flat seat relative
to the shower base surface. If you ever want to remove the Drain Body from a locked position, use a flat head screwdriver to
push the snap mechanism’s plastic flap inwards while unscrewing the Drain Body counter-clockwise (LEFT) at the same time.
In case it is difficult to hear the click mechanism, you can also verify a safe connection as described under point 8.
8. On the top side of the drain you can verify the drain unit has successfully connected when the single hash marks are centered
between the double hash marks.
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9. Clean the subfloor with a moist sponge to remove dust and dirt, and apply a skimcoat of a suitable, modified tile adhesive/
thinset (ANSI 118.4 or better), and comb through with a 1/4 in. × 1/4 in. notched trowel. Notches should be applied uniformly
and point towards the shortest side of the base area. You can also use a 1/2 in. square notch trowel, instead.
10. Trowel the thinset on the rear side of the Fundo again using a 1/4 in. × 1/4 in. notched trowel. Flat trowel the thinset over the
entire product‘s cement surface, then comb through thinset bed creating channels pointing in same direction as applied on
subfloor. If a 1/2 in. square notch trowel was used to apply thinset to the subfloor, you want to apply only a flat skim coat of
thinset on the rear side of the Fundo.
11. Press the Fundo firmly into the thinset bed (sloped side up) ensuring that the installation is level along its perimeter and sides,
and thinset attachment and coverage is void free. Apply some weight equally and leave on surface and drain area to allow the