GFRC is concrete that uses glass fibers for reinforcement instead of steel. It is typically cast in a thin section of 1/2" to 3/4" in thickness. Since the fibers cannot rust like steel, there is no need for a protective concrete cover thickness to prevent rusting. With the thin, hollow construction of GFRC products, they can weigh a fraction of the weight of traditional precast concrete. GFRC is a composite of cement, glass fibers, aggregates and polymers. It has the look and feel of traditional solid precast and can be used in conjunction with solid precast to meet the projects design criteria.