Softboard, as with hardboard, is made up of wet-felted wood fibres which are pressed into a panel under heat and pressure. The panel is not pressed to the same degree as hardboard, resulting in a relatively soft board, uniform in density and thickness. Flexijoint is softboard with the addition of bitumen to assist in decreasing moisture absorption. The cellular nature of the material combined with its density results in a lightweight panel that has good thermal and sound insulation properties. It is used as ceiling insulation, office and acoustic enhancing screens, protective packaging, display boards, while Flexijoint is used for concrete spacers in general construction.