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wedi Building Board

wedi Building Board

„Cut, shape, glue.“

wedi Building Boards have a blue core made from CFC- and HBCD free extruded polystyrene rigid foam. This makes wedi building boards an ideal base for any type of thinset adhered tile or stone. wedi Building Boards can be applied to practically any loadbearing substrate, are waterproof throughout, insulating, versatile in its use in field customised applications, light and extremely robust and strong. While often used within the range of wedi shower systems it is also a formidable tile backer board for use on walls, floors, countertops and many more applications.
Available in a wide variety of thicknesses and sizes, wedi Building Panels are compatible with virtually any stable substructure.

  • 100 % waterproof blue core, made from CFC-free, HBCD-free extruded polystyrene closed cell foam
  • Available in multiple thicknesses and sizes
  • Compatible with virtually any stable substructure
  • Versatile, limitless installation capabilities
  • Strong, due to cement resin with embedded mesh reinforcement – no chance for delamination
  • Superior bond to any tile using any thinset mortars on cement or epoxy basis
  • Extremely light weight, easy and clean to cut
  • Includes thermal insulating properties
  • Protects against mould and mildew
  • Perfect, even surface for mosaics, as well as large size or thin body tile

Technical data of building panel

Nominal thickness in mm

R-value

U-value W/m2 x K

4 0.68 1.47
6 1.03 0.97
10 1.72 0.58
20 3.44 0.29
50 8.60 0.12

wedi Building Panel Material Composition XPS/ Extruded Polystyrene Foam Core covered with fiberglass mesh fully embedded in a cement based resin coating
Waterproofness of Assembled System Australia CodeMark CM20134
Waterproofness of Assembled System New Zealand CodeMark CM20221
Tensile Strenght (Thinset Mortar to wedi Coating to Foam (ASTM C297) 0.45 N/mm²
Shear Strenght (ANSI A118.10-1999) 28 day Shear Stregnth: 0.65 N/mm²
84 day Shear Strenght: 0.68 N/mm²
100 day Shear Strength: 0.67 N/mm²
Capillarity 0
Flexural Strength (ASTM C947) 4.32 N/mm²
Robinson Floor Tester (ASTM C627) Heavy duty commercial use, passed
Temperature Limits -50 C to + 80 C
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
Dynamic Impact Test (10 mm board attached to 450 mm timber studs NCC 1 Spec C1.8) Passes
Max. hanging load when wedi is used on the ceiling 88kg/m²
Max. hanging load when wedi is used on Timber Wall Studs 113kg/m²
Fungus & Bacteria Resistance (ASTM G21) No Growth, Passes
Drain Assembly Kit, WaterMark Passes
Weight for Building Board (2500 × 1200 × 10 mm) 10.1 kg

Product sizes

Order no. Designation Length x width x thickness
010000004 wedi building board 4 mm 1250 x 600 x 4 mm
010000006 wedi building board 6 mm 1250 x 600 x 6 mm
010000020 wedi building board 20 mm 2500 x 600 x 20 mm
010000050 wedi building board 50 mm 2500 x 600 x 50 mm

Area of application wedi Building Board

  • The possibilities are endless when it comes to wall, floor not least because of the wide range of different thicknesses.
  • They can be applied to practically any type of substrate. Whether it's old tile coverings, adhesive or non-adhesive substrate, lush mounting onto existing plasterboard or dry lining. Thanks to the simplified processing, wedi building panels can handle all manner of challenges on the building site.
  • New Construction of Residential/Commercial use buildings
  • Renovation in Residential/Commercial use buildings
  • Wet areas such as showers and steam baths
  • Over wooden or concrete substructure

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