Fiber reinforcement is mixed directly into concrete at the batch plant, eliminating field placement labor. Synthetic fiber mesh (polypropylene) costs $6-$10 per cubic yard of concrete — added to your ready-mix order at the plant. 40 per sq ft for a. What is Fiber-Reinforced Polymer (FRP) rebar? Fiber-reinforced polymer (FRP) rebar is a new building material. FRP rebar is different from traditional steel reinforcement. It is made of strong fibers set in a polymer. Cheapest Option: Untreated Steel ($0. 40/ft) is best for short-term, dry projects. Best Value: Fiberglass (GFRP) ($0. What Is Basalt FRP (BFRP) Rebar and Why Does It Cost More Up Front? Basalt FRP rebar, often called BFRP. As the construction industry looks for corrosion-resistant, lightweight, and cost-effective alternatives to traditional steel, fiberglass rebar—also known as GFRP (Glass Fiber Reinforced Polymer) rebar—has gained strong momentum.