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Fundo Primo

Fundo Primo

„Floor-level shower elements for effective use of space.“

Product information

Internally waterproof and pre-sloped shower floor base with factory integrated and waterproofed point drain connection for fast track installations that eliminate the many different steps and products involved in traditional mortar bed or semi pre-fabricated sheet – or liquid membrane system installations .

Fundo Primo can be customized in the field and cut to size fitting shower stalls smaller than the nominal size of the product. Fundo Primo is available in select sizes featuring centered and off-centered drain options.

The bases come with even perimeter thickness for easy recessing into subfloor construction while curbs can be used with Fundo Primo as well. Fundo Primo can be directly tiled over upon installation and there is no limitation to the size of tile or type of tile and cement based tile setting materials selected.

Fundo Primo is available with select drain cover options. Due to the precise slope fields of the Fundo Primo, large or small format tile may be used. Within each slope field the tile will be fully supported over an even yet sloped surface. Where slope fields meet, grout lines should be designed when using tile larger than 4 “ x 4” as these should not span across two slope fields.

  • 100% waterproof due to its extruded polystyrene ( closed cell) foam core
  • 100% mold and mildew proof due to the product ‘s natural composition.
  • Precisely pre-sloped and ready to tile surface made of reinforcing fiberglass mesh embedded in a heavy duty cement resin coating performing as a strong tile backing and strong enough surface to work on during system installation and prior to tiling
  • High insulating properties due to its extruded polystyrene core giving tile or stone finish surfaces a warmer touch.
  • Extremely lightweight due to its rigid foam core benefitting installations over older structures and handling on construction sites.
  • Easy and clean to cut to size using a circular saw or handsaw.
  • Installation is extremely fast and safe due to the one piece shower base application. The product or installation requires no curing times allowing for a continuous installation process.
  • Drain covers are height adjustable for a perfect finish with the tile selected
  • No limitation to use of tile sizes or the type of tile
  • No limitation to use of cement based thinset mortars and grouts. Product works perfectly with polyurethane or epoxy based grouts.

Product video: Fundo Primo

Technical properties - Fundo Primo

Drain Technical Properties

Factory integrated drain connection valve in shower base and field installed compression fit drain unit provided in each system. Drain unit seals to all nominal 2” schedule 40 floor pipes made of ABS or PVC. Special sealing gaskets are available to seal to 2” or 1 ½” Cast Iron or Copper Pipe. Glue/ Cement Connection drain available in ABS for nominal 2” schedule 40 floor pipes.


Fundo Primo Shower Base Material XPS/ Extruded Polystyrene Foam Core covered with fiberglass mesh fully embedded in a cement based resin coating
Surface Burning Characteristics; ASTM E84-04 Passed
Tensile Strength (Thinset Mortar to wedi Coating to Foam); ASTM C297 65 PSI
Shear Strength (Thinset Mortar to wedi Coating to Foam); within ANSI 118.10-1999; wet conditions 54 PSI
Waterproofness; ASTM D4068 and within ANSI 118.10-1999 Passes
Waterproofness of Assembled System; IAPMO PS 106-2015 Passes
Capillarity 0
Temperature Exposure Limits -58°F to + 175°F
R- Value; ASTM C518 4.3hr ft. 2 F/Btu/in (R – value for 1 inch of wedi foam = 4.3)
Robinson Floor Test; ASTM C627 Heavy Duty Commercial Use, Passes
Fungus & Bacteria Resistance Compliant
Building & Plumbing Code Compliance
Compliant
2015,2012,and 2009 International Plumbing Code (IPC) Compliant
2015,2012, and 2009 International Residential Code (IRC) Compliant
2015,2012, and 2009 International Building Code (IBC) Compliant
2010 and 2005 National Plumbing Code of Canada Compliant
2012 and 2009 Uniform Plumbing Code (UPC) Compliant
2012 and 2009 National Standard Plumbing Code (NSPC) Compliant
ANSI 118.10-2008 Load – Bearing Bonded, Waterproof Membranes for Thinset Ceramic Tile and Dimension Stone Installations Compliant
ASME A112.6.3-2001 (R07) Floor and Trench Drains Compliant
IAPMO PS 46-2012 Field Fabricated Tiling Kits Compliant
IAPMO PS 106-2015 Tileable Shower Receptors and Shower Kits Compliant
New York City Approval OTCR Approved
City of L.A. Approval Approved; Report No M-100017 in reference to ICC ES PMG 1189
Illinois State Approval IDPH Approved
Michigan State Approval Approved ; Report 1625-PA
Wisconsin State Approval Approved, File 20130265
Massachusetts State Approval Approved; P3-0315-306 &P3-0315-306
Worldwide Approvals Quality Management & Control ISO 9001-2008
North- America Approvals Code Compliances & Quality Management ICC ES PMG 1189

Product sizes

Order no. Designation Length x width x thickness
073735507 wedi Fundo Primo, square floor element, central drain, drain incl. 36" x 36"
073735505 wedi Fundo Primo, square floor element, central drain, drain incl. 48" x 48"
073735518 wedi Fundo Primo, square floor element, central drain, drain incl. 60" x 60 "
073735524 wedi Fundo Primo, square floor element, central drain, drain incl. 72" x 72"
073735516 wedi Fundo Primo, rectangular floor element, central drain, drain incl. 36" x 48"
073735506 wedi Fundo Primo, rectangular floor element, central drain, drain incl. 36" x 60"
073735509 wedi Fundo Primo, rectangular floor element, central drain, drain incl. 48" x 60"
073735508 wedi Fundo Primo, rectangular floor element, central drain, drain incl. 48" x 72"
073735519 wedi Fundo Primo, rectangular floor element, central drain, drain incl. 60" x 72"
073735522 wedi Fundo Primo, rectangular floor element, central drain, drain incl. 48" x 84"
073735523 wedi Fundo Primo, rectangular floor element, central drain, drain incl. 60" x 84"
073735525 wedi Fundo Primo, rectangular floor element, central drain, drain incl. 36" x 72"
073735521 wedi Fundo Primo, rectangular floor element, offset drain, drain incl. 36" x 72"

Areas of use Fundo Primo

  • New Construction of Residential/Commercial use buildings
  • Renovation in Residential/Commercial use buildings
  • For barrier free or curbed installations
  • For customized or standard tiled showers
  • Over wooden or concrete substructures

Mandatory articles

Optional articles