Sika Boom Expanding Foam

Seal gaps and insulate like a pro with Sika Boom Expanding Foam, a high-quality polyurethane foam designed for filling, sealing, and insulating joints and cavities. It expands quickly to block air, moisture, and sound — ensuring long-lasting protection and energy efficiency. Specifications: Type: 1-component polyurethane foam Application: Manual or gun-grade Expansion: Up to 40 times its original volume Curing Time: 1–2 hours (surface dry) Features: Excellent adhesion on concrete, brick, metal, and wood Airtight and waterproof once cured Reduces noise and improves insulation