Rock Fiber, Inc. (USA) is advancing the future of sustainable advanced materials manufactured in the USA. Using proprietary electric melting technology, we transform igneous rock into near zero-emission, high-performance fibers for use in composites that outperform commodity E-Glass and other conventional glass fibers.
Through our joint venture ReforceTech Americas, we are rolling out MiniBars™—a next-generation basalt composite structural macro-fiber already in successful use across Europe—into the Americas. MiniBars™ are designed to replace structural reinforcements such as rebar and steel mesh in concrete, delivering superior tensile strength, enhanced ductility, and corrosion resistance. The result: reduced cost, shorter project timelines, and dramatically lower carbon footprints and increased lifespan across the built environment.
By pairing cutting-edge materials science with scalable U.S. production, Rock Fiber, Inc. is enabling a new generation of lighter, stronger, and more sustainable composite solutions for industries worldwide—solutions that are not only high-performing but also cost-effective.

Rock Fiber (USA)

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