12 Oz. Expanding Foam Sealant – Airtight, Waterproof Gap Filler

Presenting Fill and Seal 12 Oz. Foam Sealant, a rugged expanding urethane foam designed to close sizable voids quickly and permanently. This ready-to-use can comes with a dispensing apparatus for accurate, mess-free application. As it cures, the foam expands to about three times its original volume to create a dense, airtight, and waterproof seal around holes, cracks, and gaps that ordinary caulk cannot adequately fill.

Benefits This versatile foam delivers a durable barrier against air and moisture, helping to improve energy efficiency and comfort in living spaces. It adheres well to common construction substrates and fills uneven surfaces for a seamless finish. Use it around plumbing, electrical penetrations, crawl spaces, and exterior openings to prevent drafts and water intrusion.

• 3x Expansion Capacity: Fills large gaps quickly by expanding to three times its volume, delivering a solid, gap-free seal.
• Fast Tack-Free Time: Sets to a touch-safe surface in roughly 45 minutes, speeding up project timelines.
• Full Cure in 12 Hours: Reaches maximum strength and weather resistance for a lasting seal.
• Includes Dispensing Apparatus: Comes with an easy-to-use applicator for controlled, precise placement.
• Eco-Friendly Formula: No CFCs and designed to form airtight, waterproof seals without harmful emissions.

Why choose Fill and Seal: It’s a professional-grade solution that delivers reliable insulation and moisture protection for both interior and exterior applications. The expanding foam fills irregular gaps, creates a durable barrier, and simplifies tough sealing tasks. With a quick setup, strong cure, and included dispensing tool, this product saves time and supports long-lasting performance in demanding environments.