Properties of grass-bamboo bio-composite (GB bio-com) boards made from a mixture of grass Themeda arguens and bamboo Gigantochloa scortechinii studied. The GB bio-com boards produced at different mixture ratios of the grass and bamboo, as well as at various resin contents. The matured plants harvested, chipped into small pieces, mixed five ratios. Urea formaldehyde (UF) resin applied at 12% and 14% forming the bio-composite boards using a hot press machine. The physical, strength, and thermal properties of the boards determined by European Standards (EN) procedures. Statistical analysis showed the ratios and resin contents influence properties of grass-bamboo boards. Boards produced from 30% grass and 100% bamboo show overall best values in basic density, thickness swollen, MOE, MOR, internal bonding and screw withdrawal. The final degradation point at the highest temperature of thermal properties at 89.4% indicating the presence of cellulose fibre affecting the thermal stability.
