Collection: Fiberglass rebar

High strength

The tensile strength limit is 2 times higher than that of S500 class steel.

Low density

Thanks to it, the strength-to-weight ratio of these materials is significantly superior to that of steel.


Resistance to harmful environmental effects, alkaline environment of concrete.


It does not conduct electricity, does not interfere with electromagnetic waves and does not change its properties under the influence of an electromagnetic field.

High thermal resistance

Thermal conductivity more than 100 times lower than that of steel.


Easy transport, processing and installation.


Fiberglass reinforced polymer rebar (also known as composite reinforcement (rebar), fiberglass reinforcement rebar) - a great choice for reinforcement of foundations and concrete floors. Suitable for reinforcement of concrete elements, especially those intended to be operated in aggressive environments.


The properties of composite reinforcement are determined by the fiber used to make the reinforcement. For example, fiberglass rebar produced by different manufacturers have almost identical properties because glass fiber is used for longitudinal reinforcement. And namely the type of fiber has a decisive influence on the tensile strength and modulus of elasticity of the final product.
The main function of the resin is to combine the fibers for joint work and to distribute the stresses from the surface of the rod (in contact with the concrete) into deeper layers.
The resin also performs a protective function and forms a layer on the surface which prevents alkali or other chemical elements from entering the deeper layers of the reinforcement.


Reinforcement in monolithic elements is used only to take over tensile and compressive stresses. Fiberglass rebar "work" poorly for compression, so it is mainly used in the elements to take over the tensile stresses and to form the transverse reinforcement in order to take over the stresses in the diagonal of the incision. Reinforcing bars (both steel and composite) are in no way counted as bending elements. They are considered only as a component of the reinforced concrete element and performs partial takeover of tensile or compressive stresses from concrete, in particular tensile, concrete is much more resistant to crushing than tensile.



  • The tensile strength is 750-1020 MPa, it depends on the diameter of the rod and is from 1.5 up to 2 times larger than S500 grade steel.
  • Density is about 2000 kg/m3, and is about 3.9 times lighter than steel.
  • It deforms only elastically so it can be rolled into rolls and straightens when released, does not remain bent.
  • Due to its relatively low weight and the ability to roll, it is convenient to transport and carry. Also the amount of residue is reduced.
  • Thermal conductivity coefficient about 0.34 W/(mK) (about 130 times less conductive heat than steel).
  • Non-conductive and completely transparent to magnetic and electromagnetic fields.


  • The modulus of elasticity is 35-45 GPa (also depends on the diameter and is about 6-4.6 times lower than steel).
  • Operating temperature up to 105 °C (steel characteristics start to decrease from 300 °C).
  • Fiberglass (regardless of its binder) have a property of fatigue. Therefore, the continuous load should not exceed 50-60% of its maximum bearing capacity.


Basic recommendations for the use of fiberglass reinforcement:

  • Particularly suitable for reinforcing elements that will be exposed to aggressive media (tanks, canals, farm floors and gutters, roads and car parks, fertilizer depots and etc.). In such elements, it solves the weakest side of steel - that is corrosion resistance.
  • It is very suitable for forming the connecting reinforcement of multilayer partitions to reduce heat loss from the building.
  • Particularly suitable for buildings that require magnetic or electromagnetic transparency (electrical switchboards, magnetic resonance rooms, etc.).
  • Suitable for elements without highly concentrated stresses, as well as for elements which will be operated in a humid or aggressive environment (foundations, floors, retaining walls, plinths, etc.).
  • For structural frame elements (columns, beams, floor slabs, etc.) may only be used after recalculation by a responsible qualified designer-constructor. Due to the much lower modulus of elasticity the deformations of fiberglass reinforcement will be about 4.6-6 times greater compared to steel under the same load. So it is necessary to estimate this and increase the total cross-sectional area of the reinforcing bars accordingly. In the general, use fiberglass rebar in such elements is irrational unless there are very good reasons why steel rebar is unsuitable to use (due to required magnetic transparency or corrosion requirements).
  • Due to fatigue, it cannot be used for prestressed concrete structures.


The fiberglass rebar is wound into coils with a diameter of 1.2-1.7 m depending on the diameter of the reinforcement.

We produce rebar in rods of 25 m and coils of 100 m, 200 m or 300 m depending on the diameter.
2 products
  • Fiberglass rebar
    Fiberglass rebar
    Ugira LT
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  • Stiklo pluošto juostos
    Stiklo pluošto juostos
    Ugira LT
    Regular price
    Sale price