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FSI Optitherm® Logo Earns UL 94 HF-1 Flame Retardant Certification The UL 94 HF-1 certification positions Optitherm® as an ideal choice for a wide range of industries and applications

Optimized Processing and Superior Insulation for Advanced Manufacturing Performance

FSI’s OptiTherm® rigid pour-in-place foam systems set the standard for high-performance insulation, delivering exceptional energy efficiency, consistent product quality, and environmental responsibility.

Engineered for building envelopes, wall panels, roofing systems, and more, OptiTherm® is the solution of choice when premium economics, superior foam properties, and regulatory compliance are priorities.

Advanced Fire Safety Without Environmental Compromise

With advanced flowability, uniform density, and strong adhesion, OptiTherm® ensures reliable processing and durable results.

It features an HCFO zero-GWP blowing agent for reduced environmental impact and is certified for both Class I (A) fire resistance (ASTM E-84/UL-723) and UL 94 HF-1 flame retardancy, making it a safe and sustainable option for demanding applications.

FSI’s technical expertise supports seamless integration and optimized performance with every installation.

Benefits Include:
  • Superior thermal insulation
  • Enhanced fire safety (Class I (A) ASTM E-84/UL-723 and UL 94 HF-1 certified)
  • Zero-GWP blowing agent
  • Excellent flowability
  • Uniform density distribution
  • Rapid demold times
  • Strong adhesion
  • Dimensional stability
  • Moisture resistance
  • Sound insulation
  • Durable and long-lasting
  • Versatile across multiple industries and applications

Global Reach.

Tailored Support.

FSI serves manufacturers on an international scale with a sales, production and distribution network that spans the globe.