AbstractA recycle method of GFRP is investigated in this study. Waste GFRP was divided into short glass fibers and resin fragments by milling. However the tensile strength of composites with the chips of waste GFRP is low, the composites are expected that fiber bridging and higher compressive strength than resin. These advantages could be shown by suitable application. We examined the aptitude of the chips of waste GFRP for interleaf materials of unidirectional composite laminates. The tensile strength of interleaved composite laminates was improved and found to be better than that predicted using the law of mixture in all fiber directions. Shear support and fiber bridging by the interleaf seemed to improve the tensile strength of composite laminates.