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Fundo sloping board

Fundo sloping board

„Extension for the Fundo Primo, Fundo Riolito and Fundo Riolito neo shower elements“

Product information

The wedi Fundo sloping board is used for on-site extension of the Fundo Primo, Fundo Riolito and Fundo Riolito neo shower elements and therefore for the expansion of shower areas. It is available in two different thicknesses; with 1.00% or 1,70% slope.

  • The blue XPS core is 100% waterproof and still functions if it becomes damaged
  • abP* approved: wedi 610 seals joints between boards and makes them waterproof without the need to use any other products. As it is not necessary to use any other waterproofing materials, the tradesman benefits from increased security and a shorter application time.
  • The cement-coated surface forms an incredibly strong base for adhesive thanks to the integrated fabric.
  • All of our building board systems provide long-term protection against mould and fungi, offer fantastic insulation and therefor save energy costs.

Technical properties - Fundo sloping board


Fire behaviour EN 13501 E
Sound insulation value DIN EN ISO 140-3 (with 12,5 board thickness) Rw, P 23 dB
Bending stress in reference to DIN 53293 (applies to wedi building board with 10, 12,5 and 20 mm board thickness)
3900 kPa (average)
Tensile strength 0,28 N/mm²
Linear coefficient of thermal expansion 0,02 mm/mk


Technical properties of raw foam building board systems

Long-term compressive strength (50 years) ≤ 2% compression EN 1606 0,08 N/mm²
Compressive resistance or compressive strength at 10% compression EN 826
0,25 N/mm²
Associated module of elasticity EN 826 10 – 18 N/mm²
Thermal conductivity EN 13164 0,036 W/mK
Tensile strength EN 1607 0,45 N/mm²
Shearing resistance EN 12090 0,2 N/mm²
Shear modulus EN 12090 7 N/mm²
Bulk density EN 1602 32 kg/m³
Resistance to water vapour diffusion (μ) EN 12086 100
Water absorption under long-term immersion EN 12087 ≤ 1,5 % by vol.
Capillary action 0
Linear coefficient of thermal expansion 0.07 mm/mK
Temperature limits -50 °C / +75 °C
Fire behaviour EN 13501 E
Carbon dioxide propellant GWP value 1

Product sizes

Order no. Designation Length x width x thickness
073737001 wedi slope board Fundo Primo 600x1200x40/46 mm – slope 1% 600 x 1200 x 40/46 mm
073737002 wedi slope board Fundo Primo 600x1200x46/52 mm - slope 1% 600 x 1200 x 46/52 mm
073737003 wedi slope board Fundo RioNeo 600x1200x50/60 mm – slope 1,7% 600 x 1200 x 50/60 mm
073737023 wedi Fundo sloping board rectangular for Fundo Flex channel element - slope 1,5 % 1040 × 1200 × 26 mm
073737033 wedi Fundo sloping board rectangular for Fundo Flex channel element - slope 1,5 % 1040 × 1600 × 26 mm
073737025 wedi Fundo sloping board rectangular for Fundo Flex channel element - slope 1,5 % 1640 × 1200 × 35 mm
073737024 wedi Fundo sloping board rectangular, stepped rebate for Fundo Flex channel element - slope 1,5 % 1040 × 1200 × 38 mm
073737034 wedi Fundo sloping board rectangular, stepped rebate for Fundo Flex channel element - slope 1,5 % 1040 × 1600 × 38 mm
073737026 wedi Fundo sloping board rectangular, stepped rebate for Fundo Flex channel element - slope 1,5 % 1640 × 1200 × 47 mm

Areas of use Fundo sloping board

  • In domestic residential construction
  • In publicly accessible buildings and workplaces complying with;
    DIN 18040 Teil 1
  • In accessible dwellings complying with DIN 18040 part 2 (note specifications for minimum tile size if wheelchair access is planned, see technical properties)
  • As a construction seal combined with tile and natural stone coverings of load class A0, A and B (floors subject to moderate surface flowing water in interior areas;
    directly loaded floors in rooms in which tap or cleaning water is used very frequently or for long periods, and floors of indoor and outdoor pools that are filled with water with the properties of drinking water).
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