High-Performance Expanding Polyurethane Foam for , Filling Insulate

Sika Boom is a ready-to-use, one-component expanding polyurethane foam designed for fast, durable, and efficient sealing, filling, and insulating applications. It expands after application to fill gaps, joints, and cavities, creating an airtight and moisture-resistant seal with excellent adhesion to most construction materials. Once cured, Sika Boom forms a strong, rigid structure that improves thermal and acoustic insulation while preventing air leakage, dust penetration, and insect entry. It can be easily cut, trimmed, sanded, or painted, making it ideal for both professional construction work and DIY projects. Sika Boom is known for its reliability, controlled expansion, and long-lasting performance in both interior and exterior applications.