Continually developing technologies and creating materials with unique features allow to achieve higher results in construction. Building rebar is an ancillary material, and its main purpose is to provide structural strength. GFRP is considered the best in comparison with other existing variants for reinforcing ferroconcrete and masonry constructions. Composite non-metallic reinforcing bars are bars with a spiral transverse riffling. This unique construction material is composed of fiberglass and thermosetting resins. The former guarantees high strength of reinforcing bars, while the latter functions as the binder. Main advantages of the composite fiberglass rebar are its lightness combined with high strength.