Frequently Asked Questions

  1. What is Basalt?

    Basalt Fiber is a fiber, structurally similar to glass fiber, which exhibits improved properties over glass fiber in composite and thermal applications. Basalt fiber is made from basalt rock.

  2. What is Basalt Fiber made of?

    Basalt Fiber is made of basalt rock, an igneous rock formed by the rapid cooling of basalt lava exposed to the surface of the earth. Usually black or grey in color basalt is one of the most common rocks on earth and can be found throughout the globe. The most famous basalt deposit is the Giants Causeway in Northern Ireland where pillars of basalt rock are one of earth natural wonders

  3. How is basalt fiber used?

    Basalt Fiber is most often used as plastic composite reinforcement for added stiffness or strength, but basalt can also be used for high temperature insulation or concrete reinforcement. Basalt composite products can be call BFRPs (basalt fiber reinforced plastics).

  4. Why would I use Basalt Fiber?

    Basalt Fiber can improve the mechanical properties of your composite parts for a low cost. Using basalt fiber can help with light weighting initiatives, cost reduction and reduction of environmental footprint.

  5. Is Basalt Fiber good for the environment?

    Yes, Mafic Basalt Fiber is made from naturally occurring rock and does not require excessive chemical treatment. Basalt fiber also can unlock environmental savings in light weighting projects or construction applications.

  6. Where is Mafic Basalt Fiber produced?

    Mafic basalt fiber is manufactured in Kells, Ireland and, starting in 2018, in Shelby, North Carolina, USA

  7. How can I contact Mafic for more information?

    See our contact us tab or send an email to

  8. How can I purchase Mafic products?

    Someone in our sales department will be happy to assist you if you visit our Contact Us page or send us an email at

Our Partners

Connect Ireland Logo American Composites Manufacturers Association Logo The Network Group for Composites in Construction Logo Irish Composites Centre Logo Miller & Long Concrete Construction Logo Incotelogy Logo Advanced Composites Manufacturing Innovation Logo