
Construction
High-performance polyurethane systems for residential, commercial, and industrial construction support energy efficiency, faster build cycles, and job site reliability. From high R-value spray polyurethane foam (SPF) insulation to industrial-strength adhesives, our chemistry is engineered for dependable performance and practical application.
High R-value insulation for enhanced energy performance
Engineered adhesives for strong bonds and faster cure
Air and moisture control to reduce infiltration and improve durability
Sustainable polyurethane solutions aligned with evolving regulations
Proven and sustainable polyurethane systems for construction.
EcoSpray®
EcoSpray® is a closed-cell polyurethane spray foam insulation designed to improve energy efficiency and environmental safety. With an R-value of 7.1 per inch, it forms an effective barrier against heat, air, and moisture while adding structural strength to walls and roofs. Its formulation supports consistent processing, low odor, and minimal creep for reliable performance on the jobsite.
Ecostar® CC
EcoStar® CC is a medium-density (2.0 pcf) spray polyurethane foam system designed for a range of applications. It delivers high R-value performance, excellent adhesion, and rapid cure times while supporting environmentally responsible building practices.
Genfoam™ OC
Genfoam™ OC is a low-density, open-cell spray polyurethane foam system designed for residential insulation applications. At 0.5 pcf, it is 100% water-blown with zero-GWP and provides effective air sealing to support energy-efficient construction.
GenX™
GenX™ is a low-density, open-cell spray polyurethane foam system designed for residential insulation. At 0.5 pcf, this 100% water-blown formulation offers near zero-GWP and delivers effective air sealing to support energy-efficient construction.
Therma Froth®
ThermaFroth® is a medium-density, closed-cell (2.0 pcf) spray foam system designed for small jobs, patchwork, and touch-up applications. Available in disposable, pressurized 200- and 600-board-foot kits, it provides a convenient solution for quick insulation and air sealing projects.
Systems that support faster installs and stronger assemblies.
Builders and manufacturers are advancing performance, efficiency, and compliance across a wide range of applications.
FSI provides polyurethane systems designed to support consistent results, scalable production, and long-term reliability across insulation, sealing, bonding, and panel manufacturing.
- Thermal performance
- Strong adhesion
- Processing latitude
- Reliable supply
- Energy efficiency
- Air sealing
- Moisture protection
- Regulatory alignment
Exterior Wall Insulation
Crawl Space and Attic Insulation
Low-Slope Roof Insulation & Waterproofing
Roofing and Construction Bonding
SIP and Panel Manufacturing
Air Barrier and Sealing
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Optimizing air and moisture control?

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