Stanley F905P Gaps & Cracks Pro Foam Sealant – Expanding Polyurethane Foam for Big Gap Filling and Professional Insulation Stanley F905P is a professional-grade spray foam sealant formulated for high-volume gap filling and long-term insulation. Its expanding polyurethane foam quickly fills large cracks, joints, and cavities while forming a durable, waterproof insulation sealant. With low expansion pressure, it's ideal for detailed applications like window and door spray foam insulation, wall insulation, and general foam filler for gaps or holes. The closed-cell structure enhances energy efficiency and resists water, making it suitable for both indoor and outdoor environments. Stanley F905P adheres well to wood, concrete, metal, drywall, and brick. Once cured, it becomes a solid, paintable surface that can be trimmed and shaped to match the surroundings. High-yield, low expansion foam Closed cell polyurethane formulation Waterproof and airtight seal Compatible with foam gun dispensers Perfect for spray foam insulation in a can applications Shelf-stable and VOC compliant Ideal for professionals and advanced DIYers looking for a foam spray that combines performance, versatility, and ease of application.