Boss 2284 - a 2-part closed-cell HFO spray foam kit (E84) delivering high-performance insulation in a portable package. It’s designed for residential, commercial, and industrial projects where reliable air sealing, moisture resistance, and thermal efficiency matter, all while meeting ASTM E84 Class 1 fire rating standards.

Key Features & Design

• Low-GWP HFO Blowing Agent: Environmentally responsible with reduced global warming potential compared to traditional formulations.
• Fast & Easy Application: Two-part system dispenses quickly with minimal setup—perfect for filling gaps, sealing cracks, and insulating hard-to-reach spaces.
• High R-Value: Closed-cell structure provides excellent thermal insulation and air barrier properties.
• E84 Fire Rated: Meets ASTM E84 Class 1 for surface burning characteristics.
• Durable & Moisture-Resistant: Adds structural strength while resisting mold, pests, and moisture intrusion.
• Available Kits: Boss 2284 – 200 Board Feet; Boss 2684 – 600 Board Feet
• Brand: Boss
• Type: 2-Part Closed-Cell HFO Foam
• Fire Rating: ASTM E84 – Class 1
• Applications: Air sealing, wall cavities, attics, crawl spaces, rim joists, and more
• Why choose Boss: Choose Boss Foam Kits for reliable, high-performance spray insulation with easy application and professional-grade results.