FR SRT: Basalt Geo-Textile - 60lb roll

Hulk FR SRT® (Basalt) is a structurally reinforcing geotextile made from flame-retardant surface-treated basalt fiber in a +45°/−45° stitched architecture. It is designed for high-temperature, fire-resistant, and structural reinforcement applications
where conventional fiberglass may not provide sufficient thermal stability. When combined with Hulk WP® or other compatible resin systems, Hulk FR SRT® (Basalt) forms a seamless composite “cast” over substrates such as foundation walls, fire-resistant panels, and thermal/impact-resistant assemblies.

Key Advantages vs fiberglass SRT

• Higher thermal stability and strength retention at elevated temperature
• Noncombustible inorganic mineral reinforcement
• Excellent inplane shear performance due to ±45° architecture

Key Features & Benefits

• Rot Proof / Chemically Stable
  • Inorganic mineral fibers; resistant to rot, most acids, solvents, and chemicals.
  • Dimensionally stable; does not corrode.
• Noncombustible Reinforcement
  • Basalt fibers are noncombustible and do not support flame spread. The reinforcement retains integrity at much higher temperatures than organic fibers.
• HighTemperature Capability (Fiber Only)
  • Continuous service (fiber): up to 500 °C (932 °F)
  • Short-term peak (fiber): up to 700 °C (1292 °F)
  • Softening point: ~900–950 °C (1650–1740 °F)
  • Melting range: ~1050–1250 °C (1920–2280 °F)
• Pest Deterrent
  • Dense basalt fabric strongly deters pests from chewing through assemblies.
• Extreme Strength & Durability
  • High abrasion and vibration resistance, excellent impact resistance, and flexibility in sheardominated ±45° laminates.
• Low Smoke / Low Fuel Contribution (Fiber)
  • Inorganic basalt fiber itself does not contribute fuel to fire. Smoke and toxicity are determined by the chosen resin.

Note: Maximum service temperature of the laminate is governed primarily by the resin system, not the fiber alone (see “Thermal Performance”).

Typical Applications

• Fire-resistant, high-temp, water-resistant deflection barrier (home wrap)
• Structural panel reinforcement
• Exhaust and engine bay heat shields
• Rocket/engine compartment linings and thermal barriers
• Commercial and industrial oven linings (with suitable high-temp resin)
• Battery enclosures / thermal propagation barriers
• Below-grade waterproofing reinforcement with Hulk WP®
• Antifracture reinforcement for tile, stucco, and mortar in fire-rated assemblies

Typical Composite Temperature Limits (Informational)

For laminates using Hulk FR SRT® (Basalt) with common resins:

• Basalt + standard epoxy / polyester / vinyl ester
  • Continuous: 80–120 °C (176–248 °F)
  • Short-term excursions: 150–180 °C (302–356 °F)
• Basalt + high-temperature epoxy or phenolic
  • Continuous: 180–250 °C (356–482 °F)
  • Short-term excursions: up to ~300 °C (572 °F)

Values above are typical guidance ranges only. The end user must qualify their selected resin and laminate design for the
intended service environment.

Resin Compatibility

Hulk FR SRT® (Basalt) is compatible with most thermoset systems including:

• Epoxy
• Vinyl ester
• Unsaturated polyester
• Phenolic
• Selected high-temperature and FR resin systems

For fire-resistant / high-temperature assemblies, high-temperature epoxy or phenolic systems are recommended.

Storage & Handling

• Store indoors in a cool, dry, wellventilated area.
• Recommended storage temperature: 10–30 °C (50–86 °F)
• Recommended relative humidity: 50–75 %
• Keep rolls in original packaging until use to limit contamination and moisture uptake.
• Handle with appropriate PPE (gloves, sleeves, eye protection) to minimize skin irritation from mineral fibers

Disclaimer

All data are typical values, provided for information only, and do not constitute a specification or guarantee. Actual performance depends on resin system, processing, fiber volume fraction, design, and service conditions. Users are
responsible for testing and validating the suitability, safety margin, and regulatory compliance of Hulk FR SRT® (Basalt) in their specific application.