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wedi building panel

wedi building panel

„Cut, shape, glue.“

Product information

wedi building panel systems

Available in a wide variety of thicknesses and sizes, wedi Building Panels are compatible with virtually any stable substructure. wedi Building Panels are lightweight, internally waterproof and dimensionally stable, making them fast, clean and simple to work with. The blue waterproof core is CFC-free, made from waterproof extruded polystyrene foam, reinforced with fiberglass mesh on both sides and coated with synthetic polymer resin mortar which fully embeds the mesh layer resulting in the panel's strength and the ability to develop highest adhesion strength to virtually any type of thinset mortar. The embedded mesh eliminates the risk of delamination of installation layers. The wedi Building Panel combines the benefits of the latest manufacturing technology and material quality with sound and traditional benefits our trades enjoy.

The wedi Building Panel can be tiled with all types of ceramic, glass or stone tile whether they are mosaic or large format tiles. Especially large and thin tile benefits of the durability of the wedi Building Panel and the even surface it provides.

  • 100% waterproof due to its extruded polystyrene ( closed cell) foam core
  • 100% mold and mildew proof due to the product ‘s natural composition.
  • Strong and ready to tile surface made of reinforcing fiberglass mesh fully embedded in a cement based resin coating.
  • 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 fast and safe handling on construction sites.
  • Easy and clean to cut to size using a utility knife.
  • 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.
  • Replaces cement boards plus the added waterproof membranes.
  • Available in multiple sizes and thicknesses for use as floor underlayment, wall and ceiling backer board, over countertops, tub decks, and for building seats or tileable furniture without need for any support made of wood or steel.

All advantages at a single glance

Product video: wedi building panel

Technical data of building panel


wedi Building Panel Material Composition XPS/ Extruded Polystyrene Foam Core covered with fiberglass mesh fully embedded in a cement based resin coating
Thermal Conductivity (75°F (25°C) - ASTM C518) 0.23 Bbtu in/hr F
Tensile Strength (ASTM C297) 65 PSI
Shear Strength (Under conditions required in ANSI A118.10-1999) 28 day Shear Strength: 95 psi
84 day Shear Strength: 100 psi
100 day Shear Strength: 98 psi
Waterproofness; ASTM D4068 / ANSI A118.10-1999 Passed
Capillarity 0
R-Value 75°F (25°) - ASTM C518
4.3hr ft. 2 F/Btu/in (R Value for 1” wedi = 4.3)
Flexural Strength (ASTM C947) 627 psi
Robinson Floor Test (ASTM C627) Heavy duty commercial use, passed
Fastener Pull Through (ASTM C473) Wet 131.8 lb./Dry 196.2 lb.
Temperature Limits -58 / +175° F
Freeze & Thaw (ASTM C666 - 25 Cycles) No disintegration/change
Waterproofness of Assembly (ASTM E331) Passed, wedi Fundo Kit assembly (complete sytsem)
Fungus / Bacteria Resistance (ASTM G21) Passed, No Growth
Accelerated Aging (AC 71 - 25 Cycles) No disintegration
UL 1715 (Fire Test of interior Finish Material) Passed, flame spread <10
Linear Variation (ASTM D 1037 (ICC –EG 159)) Passed, less than 0.07%
Surface Burning Characteristics (ASTM E84-16) Classification A:
Flame Spread Index (FSI): 20
Smoke Developed Index (SDI): 70
Floor and Trench Drain Compliance (ASME A112.18.2) Passed, Compliant (ICC PMG 1189)

Product sizes

Order no. Designation Length x width x thickness
010718006 wedi building panel 1/4" (6 mm) 3' x 5' x 1/4" (914 x 1524 x 6 mm)
010717064 wedi building panel 1/2" (12,7 mm) 3' x 5' x 1/2" (914 x 1524 x 12,7 mm)
010000004 wedi building panel 1/8" (4 mm) 2' x 4' x 1/8" (600 x 1200 x 4 mm)
010716316 wedi building panel 5/8" (15,8 mm) 3' x 5' x 5/8" (600 x 2500 x 15,8 mm)
010719325 wedi building panel 1" (25,4 mm) 2' x 8' x 1" (600 x 2500 x 25,4 mm)
010000020 wedi building panel 3/4" (20 mm) 2' x 8' x 3/4" (600 x 2500 x 20 mm)
010000030 wedi building panel 1 1/4" (30 mm) 2' x 8' x 1 1/4" (600 x 2500 x 30 mm)
010000040 wedi building panel 1 1/2" (40 mm) 2' x 8' x 1 1/2" (600 x 2500 x 40 mm)
010000050 wedi building panel 2" (50 mm) 2' x 8' x 2" (600 x 2500 x 50 mm)

Area of application wedi building panel

  • 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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