Fundo Riolito installation
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Installation Fundo Riolito neo

Floor-level shower systems

wedi’s pre-sloped shower bases Riolito neo feature fully factory sealed and integrated linear drainage systems. The base itself is naturally waterproof as well as mold proof, due to its closed cell XPS foam core. The Riolito neo bases come with the wedi typical strong and ready for tiling surface coating. All Riolito neo shower bases can be field modified. They can be cut to size or extended using wedi's pre-sloped Fundo extensions.

The integrated drain in Riolito neo ensures your installation is not exposed to the risk commonly associated with bonding flange design/surface waterproofing installation-type, single drain products. The unique wedi Fundo Riolito neo bases allow water to drain away through a narrow gap between their drains cover plate and the tile surface finish. wedi Fundo Riolito neo is always equipped with the drain unit but covers are ordered separately. Options for covers include a polished stainless steel version, a double plated brushed stainless steel version, and a tileable version.

Available in 4-way and 2-way or single slope designs with close to the wall drains, wedi Riolito neo features the industries only factory sealed drain for use in custom shower configurations. What is more, the Fundo Riolito neo is available in one piece shower base panels or as a modular system offering a separate drain module and an extension module to combine and configure custom layouts even easier.
Step 1 Step 1 Cut the 2” pipe 1 1/4” below the top of the Subfloor. Use the oval shape cutting template to cut subfloor using a jigsaw to allow wedi drain trap  to be inserted and connected to floor pipe using appropriate ABS compatible or multipurpose cement glue. Please also check cement glue compatibility to floor pipe material. The drain and trap have to be secured to the subfloor. Drain recess cut out must not add deflection to subfloor.
Step 2 Step 2 Assemble the drain unit following the instruction drawing. wedi's Riolito 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 flange integrated into the coated foam part of the base. Once cut the 1/2” x 1/2” channels at the new base perimeter must be re-established. When cutting close to the drain channel always leave enough wedi foam for re-making the needed 1/2" x 1/2" channel.
Step 3 Step 3 Glue and seal the wedi drain trap to the 2” pipe. Mount the sealing collar to the wedi Riolito/Riofino underside counterpart using a manual phillips screwdriver.
Step 4 Step 4 Apply a skim coat and finally a combed through bed of a thinset using modified thinset ANSI 118.4 and 1/4” × 1/4” notch 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.
Step 5 Step 5 Trowel the thinset on the rear side of the Fundo again using a 1/4” x 1/4” notch trowel.
Step 6 Step 6 Press the Fundo firmly into the thinset bed, ensuring that the installation is level and void free. Ensure wedi drain's sealing gasket is firmly inserted in the wedi trap with no chance that thinset could have pushed into this connection area. Apply some weight equally and for at least 30 minutes (thinset bags). Do NOT step on the drain module to push /connect to drain body or thinset.
Step 7 Step 7 Set up a continuous 1/2” bead of wedi Joint Sealant at the perimeter channel and only in areas where you can immediately install a wedi Building Panel into the fresh sealant.
Step 8 Step 8 Push the wedi panel all the way into the channel of the shower base channel and its bead of sealant. Smooth out any pushed out sealant on inside seam using a putty knife. Fasten the panels directly to the studs starting 1 ft above the base and at a rate of 1 fastener per 1ft. One extra fastener is set into the seam to the next panel to crate a flush transition.
Step 9 Step 9 Apply continuous 1/2” beads of sealant between all connections of panels and install with tightly butted seams. Excess sealant must be spread flat with a putty knife. All seams and fastener heads in the assembly are covered with a secondary 1/2” bead of sealant and spread flat. The seams should be covered 3/4” to 1” on either side of seam. All fastener/washers are covered with sealant stretching 1” over the washer edges.
Step 10 Step 10 wedi Niches are installed in a cut out in the wedi wall and attached with it's flange right into the center of 16 o.c. studs. wedi sealant is set along the connection of wall to niche.
Step 11 Step 11 2 Fasteners each side of the niche are set to create a flush transition to the wall panels. Another 1/2” bead of wedi seal ant is spread over fasteners and seams.
Step 12 Step 12 A continuous 1/2” bead of sealant is set into the channel and along the vertical curb notch part. A circle of 1/2” sealant bead is set against the wall panels where the curb attaches. A 1/2” x 1/2” bed of thinset mortar is applied to the subfloor and just a skimcoat on the foam bottom part of the curb as a best practice. The tightly cut to fit curb is pressed into the connection. Weight is applied on and against the curb (from outside) and another 1/2” bead of sealant is applied over all curb seams and spread flat. The seams must be covered 3/4” to 1” either side of a seam.

Curb connection notches must be cut to fit select Riolito / Riofino bases with perimeter thickness higher than 1 1/2".

wedi Fundo Riolito neo – Channel drainage

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At a glance

Technical handbook 3.92 MB) Data sheet Fundo Riolito 1.41 MB Data sheet Joint sealant 0.14 MB Assembly Instruction 1.54 MB

wedi system components

wedi Building Panels wedi Fundo Riolito neo wedi Joint Sealant

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