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Rockfiber Basalt Fiber Production and Sale. ◎ What is Basalt Fiber? Basalt fiber is a mineral inorganic based, derived from the Basalt Volcanic Rock.

It has excellent physical, mechanical and chemical properties, derived from molten basalt. Its main characteristics are:
➢ Not subject to corrosive changes
➢ High resistance
➢ Fire resistance
➢ Low thermal conductivity
➢ Light
➢ Resistant to harsh environments
➢ Not magnetized
➢Has dielectric properties

ROCKFIBER is producing and selling from azorean island´s basalt stone. Our available products, are:

▶︎ Continuous basalt fiber, Roving - CBF
▶︎ Cut Basalt Fiber, Chopped
▶︎ Powder Basalt Fiber, Milled

Can be applied in:

✷ Fireproof textile
✷ Aerospace sector
✷ Automotive
✷ Defense
✷ Construction: Rebar and Mesh
✷ Reinforcement concrete
✷ High pressure gas tanks and CNG cylinders
✷ Offshore Structures
✷ Shipping
✷ Sports equipment
✷ Textiles

Sustainable Composite:
◘ Natural fiber
◘ Low carbon footprint
◘ Possibility of recycling

22/09/2026

Fire-resistant coating with basalt scales over EPS

“Fire doesn’t pass through it. It’s been 15 minutes already. The polystyrene behind it melted from the heat, that’s all. Basalt will probably melt after some time of constant high temperature, but it’s not a material that will catch fire or allow fire to pass through!”- client





🪨 Impact of eco-friendly basalt fillers on silicone rubberWe are pleased to share the latest research highlights from RO...
16/07/2026

🪨 Impact of eco-friendly basalt fillers on silicone rubber

We are pleased to share the latest research highlights from ROCKFIBER, demonstrating how sustainable basalt-based solutions can significantly enhance the performance of silicone rubber.

By combining eco-friendly basalt fillers with a hybrid intumescent flame retardant (IFR) system, the study achieved remarkable improvements in fire resistance, thermal stability and overall material performance.

🔬 Research Highlights

🪨 Basalt Reinforcement
Basalt fillers successfully incorporated into silicone rubber (SR).

🔗 Enhanced Interface
Silane-treated basalt improves filler–matrix interfacial adhesion.

🔥 Hybrid IFR System
Synergistic integration of carbon, acid and gas sources.

🛡️ Superior Fire Performance
• LOI: 37.2%
• UL94: V-0

🌡️ Improved Thermal Stability
Higher thermal stability and increased char yield after combustion.

These findings reinforce the potential of basalt fiber as a sustainable, high-performance solution for advanced engineering applications requiring safety, durability and environmental responsibility.

🌍 Natural. Resistant. Sustainable.

🌐 www.rockfiber.pt

📧 [email protected]

📞 +351 918 726 238

📍 Portugal
🗞️ https://www.sciencedirect.com/science/article/abs/pii/S0032386126009043

🪨 Impact of eco-friendly basalt fillers on silicone rubberWe are pleased to share the latest research highlights from RO...
16/07/2026

🪨 Impact of eco-friendly basalt fillers on silicone rubber

We are pleased to share the latest research highlights from ROCKFIBER, demonstrating how sustainable basalt-based solutions can significantly enhance the performance of silicone rubber.

By combining eco-friendly basalt fillers with a hybrid intumescent flame retardant (IFR) system, the study achieved remarkable improvements in fire resistance, thermal stability and overall material performance.

🔬 Research Highlights

🪨 Basalt Reinforcement
Basalt fillers successfully incorporated into silicone rubber (SR).

🔗 Enhanced Interface
Silane-treated basalt improves filler–matrix interfacial adhesion.

🔥 Hybrid IFR System
Synergistic integration of carbon, acid and gas sources.

🛡️ Superior Fire Performance
• LOI: 37.2%
• UL94: V-0

🌡️ Improved Thermal Stability
Higher thermal stability and increased char yield after combustion.

These findings reinforce the potential of basalt fiber as a sustainable, high-performance solution for advanced engineering applications requiring safety, durability and environmental responsibility.

🌍 Natural. Resistant. Sustainable.

🌐 www.rockfiber.pt

📧 [email protected]

📞 +351 918 726 238

📍 Portugal

🪨 Upgrade Your Surface Preparation with BasaltPerformance doesn’t start with the coating — it starts with the surface.In...
18/02/2026

🪨 Upgrade Your Surface Preparation with Basalt

Performance doesn’t start with the coating — it starts with the surface.

In mechanical stripping (sandblasting), the right abrasive makes all the difference. Basalt flakes and basalt fiber powder offer a powerful, more sustainable alternative to traditional media.

✔ Faster and effective removal of paint and corrosion
✔ Consistent surface profile for better adhesion
✔ Reduced free-silica exposure
✔ Reusable in controlled systems
✔ Sustainable, natural volcanic origin

Stronger adhesion. Longer coating life. Lower environmental impact.

If you’re looking for a smarter abrasive solution for industrial applications, basalt delivers performance with responsibility.

Sustainability begins at the surface.

SustainableMaterials Rockfiber

18/02/2026

VISIT US
We are going to be at the 17th edition of AMI
Fire Resistance in Plastics which takes place on 28 - 30 November 2022 at the Lindner Hotel City Plaza, in Cologne, Germany

ROCKFIBER is a brand from Azores Islands, S.Miguel- Portugal. It is a basalt fiber and scales eco composite, a natural biber which is, also, a flame retardant and fire resistant additive. It´s main features, are:
> Natural Fiber
> Eco Composite
> Carbon Footprint- 1,4 x 103 kg CO2 eq./t
> Contains SiO2 (43-45%)
> High resistance
> Great fire resistance
> Heat resistance up to 1000ºC (TGA)
> Does not absorb water
> Low thermal conductivity
> Without sizing
> Halogens free
> A1 class in fire and smoke
> Light
> Not subject to corrosive changes
> Resistant to harsh environments
> Resistant to alkali environments
> Salt water resistant
> Not magnetized
> Has dielectric properties
> Durable
> Absolutely environment friendly
>Wear resistant
>Contains radiation but does not absorb it

At the moment we can provide: Chopped basalt fiber (hard/ breakable fiber); Basalt scales/ Flake/ Film and Basalt fiber powder.

We have been getting good feedback from our fibers and scales incorporated with: polymers; glues; resins; coatings; mortars; hempcrete;blockboards; paints; mufflers; silicon rubber and styrofoam.



🪨 Basalt as a Sustainable Abrasive in Mechanical StrippingSurface preparation remains one of the most critical factors i...
18/02/2026

🪨 Basalt as a Sustainable Abrasive in Mechanical Stripping

Surface preparation remains one of the most critical factors in the long-term performance of any coating system. Without proper cleaning and profiling, there is no adhesion — and without adhesion, there is no durability.

In mechanical stripping (sandblasting), abrasive particles are projected by compressed air to remove:

✔️ Old paint
✔️ Rust and corrosion
✔️ Industrial contaminants
✔️ Scale and degraded coatings

An emerging alternative in abrasive media is the use of basalt flakes and basalt fiber powder.

Why basalt?

🔹 Naturally occurring volcanic rock
🔹 High hardness and thermal resistance
🔹 Low free-silica content
🔹 Potential reusability in controlled systems
🔹 More sustainable alternative to traditional abrasives

Beyond effective coating removal, basalt abrasives can create an optimal surface profile for anti-corrosion systems and advanced industrial coatings — enhancing long-term structural protection.

As industries move toward safer and more environmentally responsible solutions, basalt presents a technically robust and forward-thinking option.

Innovation in sustainability doesn’t start with the final coating — it starts with surface preparation.

21/01/2026

🔥 Escamas de basalto: proteção mineral contra a chama

As escamas de basalto são não-combustíveis e, quando usadas como revestimento, criam uma barreira térmica que retarda a ação da chama e aumenta significativamente a durabilidade dos materiais expostos ao fogo.

Dependendo da formulação e da espessura aplicada, o revestimento pode ganhar considerável tempo de resistência ao fogo, além de maior estabilidade térmica e vida útil.

Uma solução robusta, mineral e sustentável para aplicações críticas.


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