Fiberglass VS Basalt Fiber composites

Table of contents:

  1. Fiberglass VS Basalt Fiber composites
  2. Properties and alternatives  
  3. Comparison of fiber composites

Basalt fiber is a material made from extremely fine fibers of basalt. It usually used at different manufacturing processes and industries. It can also be used as a composite to produce various products, like basalt fiber panels, basalt fiber mesh, basalt rebar, and even basalt cloth. 

Why basalt fiber has better characteristics than glass fiber?

Glass fiber makes from melted silica sand when basalt fiber manufactured from basalt rock. That’s why basalt fiber-based products are stronger and more reliable. It is more profitable to use this kind of fiber because it provides high-quality thanks for straight material.

Moreover, basalt fiber is fireproof. This point creates many more variants of basalt fiber applications. Fireproof composites can be used in mechanical engineering, automobile industry, aircraft building, and other manufactures. Fire retardants act to slow composite decomposition, heat release, and flame spread.

This video proves the advantage of using basalt fiber-based composites in manufacturing quality building materials that have contact with high-temperatures.

Glass fiber reinforced concrete ( GFRC) vs Basalt fiber reinforced concrete (BFRC)

Concrete is a composite material with a low strain limit and a low tensile strength. Mixing fiber with concrete can improve the engineering properties of the concrete and extend the term of exploitation of composite structures. Various types of fibers can be used in cement and concrete composite, such as steel or organic fibers.

Glass reinforced concrete represents a mix of concrete (usually it is a Portland cement) with fiberglass. There are different applications of glass fibre reinforced concrete:

  • Acoustic barriers and screens;
  • Bridge and tunnel lining panels;
  • Water and drainage works;
  • Building renovation works;
  • Architectural cladding;

Advantages of using glass fiber reinforced concrete:

  1. Light weight: a concrete cladding which is made from thick precast concrete weighs more than twice that is made of GFRC. That’s why its installation is fast and comparatively simple.
  2. Thin and strong material: less weight ease and rapid installation, and also reduce the load applied to the structure.
  3. Cheap installation: you don’t need to have expensive equipment and tools for installation concrete fiberglass reinforcement.
  4. Partly independent of the weather: GFRC is less dependent on weather effects and more resistant to freeze-thaw than the normal concrete. 
  5. Easy to cut and transform.

Disadvantages of using glass fiber reinforced concrete:

  1. GFRC losing its strengths over a long period;
  2. Using of glass fiber reinforced concrete implies forward planning;
  3. Can be harmful to asthma sufferers (because of gel coating every 5 years);

Basalt fiber reinforced concrete manufacturing by addition basalt fiber to concrete. This technology helps to create high-quality building product that has many properties.

Advantages of using basalt fiber reinforced concrete:

  • Straightness (low level of microcracks (up to 90%));
  • Increases flexural strength (up to 35%) 
  • Increases waterproofing (up to 50%)
  • Increases concrete fatigue strength and resistance (up to 40%) 
  • Increases the frost resistance (up to 35%)
  • Increases surface endurance of concrete ( up to 70%) 
  • Decreases slivering of corners and edges ( up to 90%)

Disadvantages of using basalt fiber reinforced concrete:

  • The price of fibers made from basalt is higher than fiberglass. 

But it is worth mentioning that characteristics of basalt fiber can create high-quality composite constructions with long term of exploitation. Besides, it is an eco-building material that saves human health.


So, we can conclude that basalt fiber characteristics are better than fiberglass. Glass fiber has properties, but in comparison to basalt fiber it can’t provide the highest level of quality.

 Benefits of using basalt fiber in various applications:

  1. Basalt fiber has excellent thermal properties to that of glass fibers: It can easily withstand the temperature of 1200°c to 1300°c for hours continuously. Unstressed basalt fibers and fabrics can maintain their integrity even up to 1250°c.
  2. High stiffness and strength: Basalt fiber has a slightly higher specific gravity 2.6-2.8.
  3. Abrasion property: Basalt material is extremely hard and has hardness values between 5 to 9 on Mohr’s scale, which results in better abrasion property.
  4. Corrosion resistance: Basalt material has strong resistance against the action of fungi and micro-organisms. It also has corrosion resistance.
  5. Eco-friendly, not harmful for health building material: Basalt fibers have the natural raw material. That’s why it does not cause any damage to health.

Comparison of basalt fibre with steel fiber, E glass fiber, and carbon fiber

Basalt fiber is now being a popular choice of building companies and builders. It is very difficult to find a wholesale building material supplier that has all guarantees of quality.

Here you can find different opportunities such as supplying basalt fiber-based products (such as basalt fiber, basalt rebar, basalt roving) from wholesale building supplier, which successfully cooperates with Ukrainian and foreign customers worldwide.