Wedi Board or Building Panels are much more than a simple tile backer board and offer almost endless installation opportunities. Wedi Board Panels are available in a wide variety of thicknesses and sizes and they are compatible with most any substructure. They are lightweight, internally waterproof and dimensionally stable, making them fast, clean and simple to work with. The blue waterproof core is CFC- and HBCD free, made from waterproof extruded polystyrene foam, reinforced with fiberglass mesh on both sides. They are coated with synthetic polymer resin mortar, which fully embeds the mesh layer resulting in the panel‘s strength and the ability to develop the highest adhesion strength to virtually any type of thinbed mortar. The embedded mesh eliminates the risk of delamination of installation layers.