STI SpecSeal® Fast Tack® Firestop Spray is a single-component, elastomeric hybrid polymer spray coating designed to provide passive smoke and fire protection in construction joints. It cures rapidly to form a durable, flexible, water-resistant shield with excellent fire and smoke resistance. Applied by airless spray or brush, Fast Tack Spray delivers reliable protection in perimeter fire containment and curtain wall systems.

Key Highlights

• Single-component hybrid polymer firestop spray
• Skins over quickly; tack free in ~35 minutes
• Cures even below freezing conditions
• Durable, flexible, water-resistant fire and smoke shield
• Excellent adhesion to common construction substrates
• Rated for up to 4 hours in tested joint/perimeter systems
• Meets ASTM E2307, E1966, UL2079, E814, UL1479, E1399, and CAN/ULC S115
• Non-halogenated; no asbestos, PCBs, or inorganic fibers
• Low VOC (107 g/L) — LEED® v3, v4, v4.1 compliant
• Available in Red or Limestone

Packaging